1 // radiostack.cxx -- class to manage an instance of the radio stack
3 // Written by Curtis Olson, started April 2000.
5 // Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <simgear/compiler.h>
29 #include <simgear/math/sg_random.h>
31 #include <Aircraft/aircraft.hxx>
32 #include <Navaids/ilslist.hxx>
33 #include <Navaids/mkrbeacons.hxx>
34 #include <Navaids/navlist.hxx>
35 #include <Time/event.hxx>
37 #include "radiostack.hxx"
39 static int nav1_play_count = 0;
40 static int nav2_play_count = 0;
41 static int adf_play_count = 0;
42 static time_t nav1_last_time = 0;
43 static time_t nav2_last_time = 0;
44 static time_t adf_last_time = 0;
47 FGRadioStack *current_radiostack;
51 * Boy, this is ugly! Make the VOR range vary by altitude difference.
53 static double kludgeRange ( double stationElev, double aircraftElev,
56 // Assume that the nominal range (usually
57 // 50nm) applies at a 5,000 ft difference.
59 double factor = ((aircraftElev*SG_METER_TO_FEET) - stationElev) / 5000.0;
60 double range = fabs(nominalRange * factor);
62 // Clamp the range to keep it sane; for
63 // now, never less than 25% or more than
64 // 500% of nominal range.
65 if (range < nominalRange/4.0) {
66 range = nominalRange/4.0;
67 } else if (range > nominalRange*5.0) {
68 range = nominalRange*5.0;
75 // periodic radio station search wrapper
76 static void fgRadioSearch( void ) {
77 current_radiostack->search();
81 FGRadioStack::FGRadioStack() :
82 lon_node(fgGetNode("/position/longitude-deg", true)),
83 lat_node(fgGetNode("/position/latitude-deg", true)),
84 alt_node(fgGetNode("/position/altitude-ft", true)),
94 SGPath path( globals->get_fg_root() );
96 term.append( "Navaids/range.term" );
98 low.append( "Navaids/range.low" );
100 high.append( "Navaids/range.high" );
102 term_tbl = new SGInterpTable( term.str() );
103 low_tbl = new SGInterpTable( low.str() );
104 high_tbl = new SGInterpTable( high.str() );
105 dme_last_time.stamp();
110 FGRadioStack::~FGRadioStack()
112 unbind(); // FIXME: should be called externally
121 FGRadioStack::init ()
130 // Search radio database once per second
131 global_events.Register( "fgRadioSearch()", fgRadioSearch,
132 fgEVENT::FG_EVENT_READY, 1000);
136 FGRadioStack::bind ()
139 fgTie("/radios/nav[0]/frequencies/selected-mhz", this,
140 &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
141 fgSetArchivable("/radios/nav[0]/frequencies/selected-mhz");
142 fgTie("/radios/nav[0]/frequencies/standby-mhz", this,
143 &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
144 fgSetArchivable("/radios/nav[0]/frequencies/standby-mhz");
145 fgTie("/radios/nav[0]/radials/selected-deg", this,
146 &FGRadioStack::get_nav1_sel_radial,
147 &FGRadioStack::set_nav1_sel_radial);
148 fgSetArchivable("/radios/nav[0]/radials/selected-deg");
149 fgTie("/radios/nav[0]/volume", this,
150 &FGRadioStack::get_nav1_vol_btn,
151 &FGRadioStack::set_nav1_vol_btn);
152 fgSetArchivable("/radios/nav[0]/volume");
153 fgTie("/radios/nav[0]/ident", this,
154 &FGRadioStack::get_nav1_ident_btn,
155 &FGRadioStack::set_nav1_ident_btn);
156 fgSetArchivable("/radios/nav[0]/ident");
159 fgTie("/radios/nav[0]/radials/actual-deg", this,
160 &FGRadioStack::get_nav1_radial);
161 fgTie("/radios/nav[0]/to-flag", this, &FGRadioStack::get_nav1_to_flag);
162 fgTie("/radios/nav[0]/from-flag", this, &FGRadioStack::get_nav1_from_flag);
163 fgTie("/radios/nav[0]/in-range", this, &FGRadioStack::get_nav1_inrange);
164 fgTie("/radios/nav[0]/heading-needle-deflection", this,
165 &FGRadioStack::get_nav1_heading_needle_deflection);
166 fgTie("/radios/nav[0]/gs-needle-deflection", this,
167 &FGRadioStack::get_nav1_gs_needle_deflection);
170 fgTie("/radios/nav[1]/frequencies/selected-mhz", this,
171 &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
172 fgSetArchivable("/radios/nav[1]/frequencies/selected-mhz");
173 fgTie("/radios/nav[1]/frequencies/standby-mhz", this,
174 &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
175 fgSetArchivable("/radios/nav[1]/frequencies/standby-mhz");
176 fgTie("/radios/nav[1]/radials/selected-deg", this,
177 &FGRadioStack::get_nav2_sel_radial,
178 &FGRadioStack::set_nav2_sel_radial);
179 fgSetArchivable("/radios/nav[1]/radials/selected-deg");
180 fgTie("/radios/nav[1]/volume", this,
181 &FGRadioStack::get_nav2_vol_btn,
182 &FGRadioStack::set_nav2_vol_btn);
183 fgSetArchivable("/radios/nav[1]/volume");
184 fgTie("/radios/nav[1]/ident", this,
185 &FGRadioStack::get_nav2_ident_btn,
186 &FGRadioStack::set_nav2_ident_btn);
187 fgSetArchivable("/radios/nav[1]/ident");
190 fgTie("/radios/nav[1]/radials/actual-deg", this,
191 &FGRadioStack::get_nav2_radial);
192 fgTie("/radios/nav[1]/to-flag", this, &FGRadioStack::get_nav2_to_flag);
193 fgTie("/radios/nav[1]/from-flag", this, &FGRadioStack::get_nav2_from_flag);
194 fgTie("/radios/nav[1]/in-range", this, &FGRadioStack::get_nav2_inrange);
195 fgTie("/radios/nav[1]/heading-needle-deflection", this,
196 &FGRadioStack::get_nav2_heading_needle_deflection);
197 fgTie("/radios/nav[1]/gs-needle-deflection", this,
198 &FGRadioStack::get_nav2_gs_needle_deflection);
201 fgTie("/radios/dme/frequencies/selected-khz", this,
202 &FGRadioStack::get_dme_freq, &FGRadioStack::set_adf_freq);
205 fgTie("/radios/dme/in-range", this, &FGRadioStack::get_dme_inrange);
206 fgTie("/radios/dme/distance-nm", this, &FGRadioStack::get_dme_dist);
207 fgTie("/radios/dme/speed-kt", this, &FGRadioStack::get_dme_spd);
208 fgTie("/radios/dme/ete-min", this, &FGRadioStack::get_dme_ete);
211 fgTie("/radios/adf/frequencies/selected-khz", this,
212 &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
213 fgSetArchivable("/radios/adf/frequencies/selected-khz");
214 fgTie("/radios/adf/frequencies/standby-khz", this,
215 &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
216 fgSetArchivable("/radios/adf/frequencies/standby-khz");
217 fgTie("/radios/adf/rotation-deg", this,
218 &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
219 fgSetArchivable("/radios/adf/rotation-deg");
220 fgTie("/radios/adf/volume", this,
221 &FGRadioStack::get_adf_vol_btn,
222 &FGRadioStack::set_adf_vol_btn);
223 fgSetArchivable("/radios/adf/volume");
224 fgTie("/radios/adf/ident", this,
225 &FGRadioStack::get_adf_ident_btn,
226 &FGRadioStack::set_adf_ident_btn);
227 fgSetArchivable("/radios/adf/ident");
229 fgTie("/radios/marker-beacon/inner", this,
230 &FGRadioStack::get_inner_blink);
231 fgTie("/radios/marker-beacon/middle", this,
232 &FGRadioStack::get_middle_blink);
233 fgTie("/radios/marker-beacon/outer", this,
234 &FGRadioStack::get_outer_blink);
238 FGRadioStack::unbind ()
240 fgUntie("/radios/nav[0]/frequencies/selected-mhz");
241 fgUntie("/radios/nav[0]/frequencies/standby-mhz");
242 fgUntie("/radios/nav[0]/radials/actual-deg");
243 fgUntie("/radios/nav[0]/radials/selected-deg");
244 fgUntie("/radios/nav[0]/on");
245 fgUntie("/radios/nav[0]/ident");
246 fgUntie("/radios/nav[0]/to-flag");
247 fgUntie("/radios/nav[0]/from-flag");
248 fgUntie("/radios/nav[0]/in-range");
249 fgUntie("/radios/nav[0]/heading-needle-deflection");
250 fgUntie("/radios/nav[0]/gs-needle-deflection");
252 fgUntie("/radios/nav[1]/frequencies/selected-mhz");
253 fgUntie("/radios/nav[1]/frequencies/standby-mhz");
254 fgUntie("/radios/nav[1]/radials/actual-deg");
255 fgUntie("/radios/nav[1]/radials/selected-deg");
256 fgUntie("/radios/nav[1]/on");
257 fgUntie("/radios/nav[1]/ident");
258 fgUntie("/radios/nav[1]/to-flag");
259 fgUntie("/radios/nav[1]/from-flag");
260 fgUntie("/radios/nav[1]/in-range");
261 fgUntie("/radios/nav[1]/heading-needle-deflection");
262 fgUntie("/radios/nav[1]/gs-needle-deflection");
264 fgUntie("/radios/dme/frequencies/selected-khz");
267 fgUntie("/radios/dme/in-range");
268 fgUntie("/radios/dme/distance-nm");
269 fgUntie("/radios/dme/speed-kt");
270 fgUntie("/radios/dme/ete-min");
272 fgUntie("/radios/adf/frequencies/selected-khz");
273 fgUntie("/radios/adf/frequencies/standby-khz");
274 fgUntie("/radios/adf/rotation-deg");
275 fgUntie("/radios/adf/on");
276 fgUntie("/radios/adf/ident");
278 fgUntie("/radios/marker-beacon/inner");
279 fgUntie("/radios/marker-beacon/middle");
280 fgUntie("/radios/marker-beacon/outer");
284 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
285 double FGRadioStack::adjustNavRange( double stationElev, double aircraftElev,
286 double nominalRange )
288 // extend out actual usable range to be 1.3x the published safe range
289 const double usability_factor = 1.3;
291 // assumptions we model the standard service volume, plus
292 // ... rather than specifying a cylinder, we model a cone that
293 // contains the cylinder. Then we put an upside down cone on top
294 // to model diminishing returns at too-high altitudes.
296 // altitude difference
297 double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
298 // cout << "aircraft elev = " << aircraftElev * SG_METER_TO_FEET
299 // << " station elev = " << stationElev << endl;
301 if ( nominalRange < 25.0 + SG_EPSILON ) {
302 // Standard Terminal Service Volume
303 return term_tbl->interpolate( alt ) * usability_factor;
304 } else if ( nominalRange < 50.0 + SG_EPSILON ) {
305 // Standard Low Altitude Service Volume
306 // table is based on range of 40, scale to actual range
307 return low_tbl->interpolate( alt ) * nominalRange / 40.0
310 // Standard High Altitude Service Volume
311 // table is based on range of 130, scale to actual range
312 return high_tbl->interpolate( alt ) * nominalRange / 130.0
318 // model standard ILS service volumes as per AIM 1-1-9
319 double FGRadioStack::adjustILSRange( double stationElev, double aircraftElev,
320 double offsetDegrees, double distance )
322 // assumptions we model the standard service volume, plus
324 // altitude difference
325 // double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
326 double offset = fabs( offsetDegrees );
329 return FG_ILS_DEFAULT_RANGE;
330 } else if ( offset < 35 ) {
331 return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
332 } else if ( offset < 45 ) {
333 return (45 - offset);
340 // Update the various nav values based on position and valid tuned in navs
342 FGRadioStack::update()
344 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
345 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
346 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
350 Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
354 ////////////////////////////////////////////////////////////////////////
356 ////////////////////////////////////////////////////////////////////////
359 station = Point3D( nav1_x, nav1_y, nav1_z );
360 nav1_loc_dist = aircraft.distance3D( station );
363 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
364 nav1_gs_dist = aircraft.distance3D( station );
370 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
371 nav1_loclat, nav1_loclon,
373 // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
374 nav1_heading = az1 - nav1_magvar;
375 // cout << " heading = " << nav1_heading
376 // << " dist = " << nav1_dist << endl;
379 double offset = nav1_heading - nav1_radial;
380 while ( offset < -180.0 ) { offset += 360.0; }
381 while ( offset > 180.0 ) { offset -= 360.0; }
382 // cout << "ils offset = " << offset << endl;
383 nav1_effective_range = adjustILSRange(nav1_elev, elev, offset,
384 nav1_loc_dist * SG_METER_TO_NM );
386 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
388 // cout << "nav1 range = " << nav1_effective_range
389 // << " (" << nav1_range << ")" << endl;
391 if ( nav1_loc_dist < nav1_effective_range * SG_NM_TO_METER ) {
393 } else if ( nav1_loc_dist < 2 * nav1_effective_range * SG_NM_TO_METER ) {
394 nav1_inrange = sg_random() <
395 ( 2 * nav1_effective_range * SG_NM_TO_METER - nav1_loc_dist ) /
396 (nav1_effective_range * SG_NM_TO_METER);
398 nav1_inrange = false;
402 nav1_radial = nav1_sel_radial;
405 nav1_inrange = false;
406 // cout << "not picking up vor. :-(" << endl;
409 #ifdef ENABLE_AUDIO_SUPPORT
410 if ( nav1_valid && nav1_inrange ) {
411 // play station ident via audio system if on + ident,
412 // otherwise turn it off
413 if ( nav1_vol_btn > 0.1 && nav1_ident_btn ) {
414 FGSimpleSound *sound;
415 sound = globals->get_soundmgr()->find( "nav1-vor-ident" );
416 sound->set_volume( nav1_vol_btn * 0.3 );
417 sound = globals->get_soundmgr()->find( "nav1-dme-ident" );
418 sound->set_volume( nav1_vol_btn * 0.3 );
419 if ( nav1_last_time <
420 globals->get_time_params()->get_cur_time() - 30 ) {
421 nav1_last_time = globals->get_time_params()->get_cur_time();
424 if ( nav1_play_count < 4 ) {
426 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") ) {
427 globals->get_soundmgr()->play_once( "nav1-vor-ident" );
430 } else if ( nav1_play_count < 5 && nav1_has_dme ) {
432 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") &&
433 !globals->get_soundmgr()->is_playing("nav1-dme-ident") ) {
434 globals->get_soundmgr()->play_once( "nav1-dme-ident" );
439 globals->get_soundmgr()->stop( "nav1-vor-ident" );
440 globals->get_soundmgr()->stop( "nav1-dme-ident" );
446 ////////////////////////////////////////////////////////////////////////
448 ////////////////////////////////////////////////////////////////////////
451 station = Point3D( nav2_x, nav2_y, nav2_z );
452 nav2_loc_dist = aircraft.distance3D( station );
455 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
456 nav2_gs_dist = aircraft.distance3D( station );
462 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
463 nav2_loclat, nav2_loclon,
465 nav2_heading = az1 - nav2_magvar;
466 // cout << " heading = " << nav2_heading
467 // << " dist = " << nav2_dist << endl;
470 double offset = nav2_heading - nav2_radial;
471 while ( offset < -180.0 ) { offset += 360.0; }
472 while ( offset > 180.0 ) { offset -= 360.0; }
473 // cout << "ils offset = " << offset << endl;
474 nav2_effective_range = adjustILSRange(nav2_elev, elev, offset,
475 nav2_loc_dist * SG_METER_TO_NM );
477 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
479 // cout << "nav2 range = " << nav2_effective_range
480 // << " (" << nav2_range << ")" << endl;
482 if ( nav2_loc_dist < nav2_effective_range * SG_NM_TO_METER ) {
484 } else if ( nav2_loc_dist < 2 * nav2_effective_range * SG_NM_TO_METER ) {
485 nav2_inrange = sg_random() <
486 ( 2 * nav2_effective_range * SG_NM_TO_METER - nav2_loc_dist ) /
487 (nav2_effective_range * SG_NM_TO_METER);
489 nav2_inrange = false;
493 nav2_radial = nav2_sel_radial;
496 nav2_inrange = false;
497 // cout << "not picking up vor. :-(" << endl;
500 #ifdef ENABLE_AUDIO_SUPPORT
501 if ( nav2_valid && nav2_inrange ) {
502 // play station ident via audio system if on + ident,
503 // otherwise turn it off
504 if ( nav2_vol_btn > 0.1 && nav2_ident_btn ) {
505 FGSimpleSound *sound;
506 sound = globals->get_soundmgr()->find( "nav2-vor-ident" );
507 sound->set_volume( nav2_vol_btn * 0.3 );
508 sound = globals->get_soundmgr()->find( "nav2-dme-ident" );
509 sound->set_volume( nav2_vol_btn * 0.3 );
510 if ( nav2_last_time <
511 globals->get_time_params()->get_cur_time() - 30 ) {
512 nav2_last_time = globals->get_time_params()->get_cur_time();
515 if ( nav2_play_count < 4 ) {
517 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") ) {
518 globals->get_soundmgr()->play_once( "nav2-vor-ident" );
521 } else if ( nav2_play_count < 5 && nav2_has_dme ) {
523 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") &&
524 !globals->get_soundmgr()->is_playing("nav2-dme-ident") ) {
525 globals->get_soundmgr()->play_once( "nav2-dme-ident" );
530 globals->get_soundmgr()->stop( "nav2-vor-ident" );
531 globals->get_soundmgr()->stop( "nav2-dme-ident" );
537 ////////////////////////////////////////////////////////////////////////
539 ////////////////////////////////////////////////////////////////////////
542 station = Point3D( dme_x, dme_y, dme_z );
543 dme_dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
544 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
545 if (dme_dist < dme_effective_range * SG_NM_TO_METER) {
547 } else if (dme_dist < 2 * dme_effective_range * SG_NM_TO_METER) {
548 dme_inrange = sg_random() <
549 (2 * dme_effective_range * SG_NM_TO_METER - dme_dist) /
550 (dme_effective_range * SG_NM_TO_METER);
555 SGTimeStamp current_time;
556 station = Point3D( dme_x, dme_y, dme_z );
557 dme_dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
558 current_time.stamp();
559 long dMs = (current_time - dme_last_time) / 1000;
560 // Update every second
562 double dDist = dme_dist - dme_prev_dist;
563 dme_spd = fabs((dDist/dMs) * 3600000);
564 // FIXME: the panel should be able to
568 dme_ete = fabs((dme_dist/dme_spd) * 60.0);
569 // FIXME: the panel should be able to
573 dme_prev_dist = dme_dist;
574 dme_last_time.stamp();
584 ////////////////////////////////////////////////////////////////////////
586 ////////////////////////////////////////////////////////////////////////
589 // staightline distance
590 station = Point3D( adf_x, adf_y, adf_z );
591 adf_dist = aircraft.distance3D( station );
594 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
598 // cout << " heading = " << nav2_heading
599 // << " dist = " << nav2_dist << endl;
601 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
602 if ( adf_dist < adf_effective_range * SG_NM_TO_METER ) {
604 } else if ( adf_dist < 2 * adf_effective_range * SG_NM_TO_METER ) {
605 adf_inrange = sg_random() <
606 ( 2 * adf_effective_range * SG_NM_TO_METER - adf_dist ) /
607 (adf_effective_range * SG_NM_TO_METER);
615 #ifdef ENABLE_AUDIO_SUPPORT
616 if ( adf_valid && adf_inrange ) {
617 // play station ident via audio system if on + ident,
618 // otherwise turn it off
619 if ( adf_vol_btn > 0.1 && adf_ident_btn ) {
620 FGSimpleSound *sound;
621 sound = globals->get_soundmgr()->find( "adf-ident" );
622 sound->set_volume( adf_vol_btn * 0.3 );
624 globals->get_time_params()->get_cur_time() - 30 ) {
625 adf_last_time = globals->get_time_params()->get_cur_time();
628 if ( adf_play_count < 4 ) {
630 if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
631 globals->get_soundmgr()->play_once( "adf-ident" );
636 globals->get_soundmgr()->stop( "adf-ident" );
641 // marker beacon blinking
642 bool light_on = ( outer_blink || middle_blink || inner_blink );
646 if ( light_on && (current - blink > 400000) ) {
649 } else if ( !light_on && (current - blink > 100000) ) {
654 if ( outer_marker ) {
655 outer_blink = light_on;
660 if ( middle_marker ) {
661 middle_blink = light_on;
663 middle_blink = false;
666 if ( inner_marker ) {
667 inner_blink = light_on;
672 // cout << outer_blink << " " << middle_blink << " " << inner_blink << endl;
676 // Update current nav/adf radio stations based on current postition
677 void FGRadioStack::search()
679 static FGMkrBeacon::fgMkrBeacType last_beacon = FGMkrBeacon::NOBEACON;
681 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
682 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
683 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
685 // FIXME: the panel should handle this
686 // don't worry about overhead for now,
687 // since this is handled only periodically
688 int dme_switch_pos = fgGetInt("/panel/dme/switch-position");
689 if (dme_switch_pos == 0) {
692 } else if (dme_switch_pos == 1) {
693 if (dme_freq != nav1_freq) {
694 dme_freq = nav1_freq;
697 } else if (dme_switch_pos == 3) {
698 if (dme_freq != nav2_freq) {
699 dme_freq = nav2_freq;
707 static string last_nav1_ident = "";
708 static string last_nav2_ident = "";
709 static string last_adf_ident = "";
710 static bool last_nav1_vor = false;
711 static bool last_nav2_vor = false;
714 ////////////////////////////////////////////////////////////////////////
716 ////////////////////////////////////////////////////////////////////////
718 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
719 nav1_ident = ils.get_locident();
721 if ( last_nav1_ident != nav1_ident || last_nav1_vor ) {
722 nav1_trans_ident = ils.get_trans_ident();
723 last_nav1_ident = nav1_ident;
724 last_nav1_vor = false;
726 nav1_has_dme = ils.get_has_dme();
727 nav1_has_gs = ils.get_has_gs();
729 nav1_loclon = ils.get_loclon();
730 nav1_loclat = ils.get_loclat();
731 nav1_gslon = ils.get_gslon();
732 nav1_gslat = ils.get_gslat();
733 nav1_elev = ils.get_gselev();
735 nav1_range = FG_ILS_DEFAULT_RANGE;
736 nav1_effective_range = nav1_range;
737 nav1_target_gs = ils.get_gsangle();
738 nav1_radial = ils.get_locheading();
739 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
740 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
741 nav1_x = ils.get_x();
742 nav1_y = ils.get_y();
743 nav1_z = ils.get_z();
744 nav1_gs_x = ils.get_gs_x();
745 nav1_gs_y = ils.get_gs_y();
746 nav1_gs_z = ils.get_gs_z();
748 #ifdef ENABLE_AUDIO_SUPPORT
749 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
750 globals->get_soundmgr()->remove( "nav1-vor-ident" );
752 FGSimpleSound *sound;
753 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
754 sound->set_volume( 0.3 );
755 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
757 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
758 globals->get_soundmgr()->remove( "nav1-dme-ident" );
760 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
761 sound->set_volume( 0.3 );
762 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
764 int offset = (int)(sg_random() * 30.0);
765 nav1_play_count = offset / 4;
766 nav1_last_time = globals->get_time_params()->get_cur_time() -
768 // cout << "offset = " << offset << " play_count = "
769 // << nav1_play_count
770 // << " nav1_last_time = " << nav1_last_time
771 // << " current time = "
772 // << globals->get_time_params()->get_cur_time() << endl;
775 // cout << "Found an ils station in range" << endl;
776 // cout << " id = " << ils.get_locident() << endl;
778 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
779 nav1_ident = nav.get_ident();
781 if ( last_nav1_ident != nav1_ident || !last_nav1_vor ) {
782 last_nav1_ident = nav1_ident;
783 last_nav1_vor = true;
784 nav1_trans_ident = nav.get_trans_ident();
786 nav1_has_dme = nav.get_has_dme();
788 nav1_loclon = nav.get_lon();
789 nav1_loclat = nav.get_lat();
790 nav1_elev = nav.get_elev();
791 nav1_magvar = nav.get_magvar();
792 nav1_range = nav.get_range();
793 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
794 nav1_target_gs = 0.0;
795 nav1_radial = nav1_sel_radial;
796 nav1_x = nav.get_x();
797 nav1_y = nav.get_y();
798 nav1_z = nav.get_z();
800 #ifdef ENABLE_AUDIO_SUPPORT
801 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
802 globals->get_soundmgr()->remove( "nav1-vor-ident" );
804 FGSimpleSound *sound;
805 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
806 sound->set_volume( 0.3 );
807 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
809 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
810 globals->get_soundmgr()->remove( "nav1-dme-ident" );
812 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
813 sound->set_volume( 0.3 );
814 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
816 int offset = (int)(sg_random() * 30.0);
817 nav1_play_count = offset / 4;
818 nav1_last_time = globals->get_time_params()->get_cur_time() -
820 // cout << "offset = " << offset << " play_count = "
821 // << nav1_play_count << " nav1_last_time = "
822 // << nav1_last_time << " current time = "
823 // << globals->get_time_params()->get_cur_time() << endl;
826 // cout << "Found a vor station in range" << endl;
827 // cout << " id = " << nav.get_ident() << endl;
833 nav1_trans_ident = "";
834 last_nav1_ident = "";
835 #ifdef ENABLE_AUDIO_SUPPORT
836 globals->get_soundmgr()->remove( "nav1-vor-ident" );
837 globals->get_soundmgr()->remove( "nav1-dme-ident" );
839 // cout << "not picking up vor1. :-(" << endl;
843 ////////////////////////////////////////////////////////////////////////
845 ////////////////////////////////////////////////////////////////////////
847 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
848 nav2_ident = ils.get_locident();
850 if ( last_nav2_ident != nav2_ident || last_nav2_vor ) {
851 last_nav2_ident = nav2_ident;
852 last_nav2_vor = false;
853 nav2_trans_ident = ils.get_trans_ident();
855 nav2_has_dme = ils.get_has_dme();
856 nav2_has_gs = ils.get_has_gs();
858 nav2_loclon = ils.get_loclon();
859 nav2_loclat = ils.get_loclat();
860 nav2_elev = ils.get_gselev();
862 nav2_range = FG_ILS_DEFAULT_RANGE;
863 nav2_effective_range = nav2_range;
864 nav2_target_gs = ils.get_gsangle();
865 nav2_radial = ils.get_locheading();
866 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
867 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
868 nav2_x = ils.get_x();
869 nav2_y = ils.get_y();
870 nav2_z = ils.get_z();
871 nav2_gs_x = ils.get_gs_x();
872 nav2_gs_y = ils.get_gs_y();
873 nav2_gs_z = ils.get_gs_z();
875 #ifdef ENABLE_AUDIO_SUPPORT
876 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
877 globals->get_soundmgr()->remove( "nav2-vor-ident" );
879 FGSimpleSound *sound;
880 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
881 sound->set_volume( 0.3 );
882 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
884 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
885 globals->get_soundmgr()->remove( "nav2-dme-ident" );
887 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
888 sound->set_volume( 0.3 );
889 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
891 int offset = (int)(sg_random() * 30.0);
892 nav2_play_count = offset / 4;
893 nav2_last_time = globals->get_time_params()->get_cur_time() -
895 // cout << "offset = " << offset << " play_count = "
896 // << nav2_play_count << " nav2_last_time = "
897 // << nav2_last_time << " current time = "
898 // << globals->get_time_params()->get_cur_time() << endl;
901 // cout << "Found an ils station in range" << endl;
902 // cout << " id = " << ils.get_locident() << endl;
904 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
905 nav2_ident = nav.get_ident();
907 if ( last_nav2_ident != nav2_ident || !last_nav2_vor ) {
908 last_nav2_ident = nav2_ident;
909 last_nav2_vor = true;
910 nav2_trans_ident = nav.get_trans_ident();
912 nav2_has_dme = nav.get_has_dme();
913 nav2_has_dme = false;
914 nav2_loclon = nav.get_lon();
915 nav2_loclat = nav.get_lat();
916 nav2_elev = nav.get_elev();
917 nav2_magvar = nav.get_magvar();
918 nav2_range = nav.get_range();
919 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
920 nav2_target_gs = 0.0;
921 nav2_radial = nav2_sel_radial;
922 nav2_x = nav.get_x();
923 nav2_y = nav.get_y();
924 nav2_z = nav.get_z();
926 #ifdef ENABLE_AUDIO_SUPPORT
927 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
928 globals->get_soundmgr()->remove( "nav2-vor-ident" );
930 FGSimpleSound *sound;
931 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
932 sound->set_volume( 0.3 );
933 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
935 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
936 globals->get_soundmgr()->remove( "nav2-dme-ident" );
938 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
939 sound->set_volume( 0.3 );
940 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
942 int offset = (int)(sg_random() * 30.0);
943 nav2_play_count = offset / 4;
944 nav2_last_time = globals->get_time_params()->get_cur_time() -
946 // cout << "offset = " << offset << " play_count = "
947 // << nav2_play_count << " nav2_last_time = "
948 // << nav2_last_time << " current time = "
949 // << globals->get_time_params()->get_cur_time() << endl;
952 // cout << "Found a vor station in range" << endl;
953 // cout << " id = " << nav.get_ident() << endl;
959 nav2_trans_ident = "";
960 last_nav2_ident = "";
961 #ifdef ENABLE_AUDIO_SUPPORT
962 globals->get_soundmgr()->remove( "nav2-vor-ident" );
963 globals->get_soundmgr()->remove( "nav2-dme-ident" );
965 // cout << "not picking up vor1. :-(" << endl;
969 ////////////////////////////////////////////////////////////////////////
971 ////////////////////////////////////////////////////////////////////////
973 if ( current_ilslist->query( lon, lat, elev, dme_freq, &ils ) ) {
974 if (ils.get_has_dme()) {
976 dme_lon = ils.get_loclon();
977 dme_lat = ils.get_loclat();
978 dme_elev = ils.get_gselev();
979 dme_range = FG_ILS_DEFAULT_RANGE;
980 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
981 dme_x = ils.get_dme_x();
982 dme_y = ils.get_dme_y();
983 dme_z = ils.get_dme_z();
985 } else if ( current_navlist->query( lon, lat, elev, dme_freq, &nav ) ) {
986 if (nav.get_has_dme()) {
988 dme_lon = nav.get_lon();
989 dme_lat = nav.get_lat();
990 dme_elev = nav.get_elev();
991 dme_range = nav.get_range();
992 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
1003 ////////////////////////////////////////////////////////////////////////
1005 ////////////////////////////////////////////////////////////////////////
1007 FGMkrBeacon::fgMkrBeacType beacon_type
1008 = current_beacons->query( lon * SGD_RADIANS_TO_DEGREES,
1009 lat * SGD_RADIANS_TO_DEGREES, elev );
1011 outer_marker = middle_marker = inner_marker = false;
1013 if ( beacon_type == FGMkrBeacon::OUTER ) {
1014 outer_marker = true;
1015 // cout << "OUTER MARKER" << endl;
1016 #ifdef ENABLE_AUDIO_SUPPORT
1017 if ( last_beacon != FGMkrBeacon::OUTER ) {
1018 if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
1019 FGSimpleSound *sound = beacon.get_outer();
1020 sound->set_volume( 0.3 );
1021 globals->get_soundmgr()->add( sound, "outer-marker" );
1023 if ( !globals->get_soundmgr()->is_playing("outer-marker") ) {
1024 globals->get_soundmgr()->play_looped( "outer-marker" );
1028 } else if ( beacon_type == FGMkrBeacon::MIDDLE ) {
1029 middle_marker = true;
1030 // cout << "MIDDLE MARKER" << endl;
1031 #ifdef ENABLE_AUDIO_SUPPORT
1032 if ( last_beacon != FGMkrBeacon::MIDDLE ) {
1033 if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
1034 FGSimpleSound *sound = beacon.get_middle();
1035 sound->set_volume( 0.3 );
1036 globals->get_soundmgr()->add( sound, "middle-marker" );
1038 if ( !globals->get_soundmgr()->is_playing("middle-marker") ) {
1039 globals->get_soundmgr()->play_looped( "middle-marker" );
1043 } else if ( beacon_type == FGMkrBeacon::INNER ) {
1044 inner_marker = true;
1045 // cout << "INNER MARKER" << endl;
1046 #ifdef ENABLE_AUDIO_SUPPORT
1047 if ( last_beacon != FGMkrBeacon::INNER ) {
1048 if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
1049 FGSimpleSound *sound = beacon.get_inner();
1050 sound->set_volume( 0.3 );
1051 globals->get_soundmgr()->add( sound, "inner-marker" );
1053 if ( !globals->get_soundmgr()->is_playing("inner-marker") ) {
1054 globals->get_soundmgr()->play_looped( "inner-marker" );
1059 // cout << "no marker" << endl;
1060 #ifdef ENABLE_AUDIO_SUPPORT
1061 globals->get_soundmgr()->stop( "outer-marker" );
1062 globals->get_soundmgr()->stop( "middle-marker" );
1063 globals->get_soundmgr()->stop( "inner-marker" );
1066 last_beacon = beacon_type;
1069 ////////////////////////////////////////////////////////////////////////
1071 ////////////////////////////////////////////////////////////////////////
1073 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
1075 #if defined( _MSC_VER ) || defined(__MINGW32__)
1076 _snprintf( freq, 10, "%.0f", adf_freq );
1078 snprintf( freq, 10, "%.0f", adf_freq );
1081 adf_ident += nav.get_ident();
1082 // cout << "adf ident = " << adf_ident << endl;
1084 if ( last_adf_ident != adf_ident ) {
1085 last_adf_ident = adf_ident;
1087 adf_trans_ident = nav.get_trans_ident();
1088 adf_lon = nav.get_lon();
1089 adf_lat = nav.get_lat();
1090 adf_elev = nav.get_elev();
1091 adf_range = nav.get_range();
1092 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
1093 adf_x = nav.get_x();
1094 adf_y = nav.get_y();
1095 adf_z = nav.get_z();
1097 #ifdef ENABLE_AUDIO_SUPPORT
1098 if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
1099 globals->get_soundmgr()->remove( "adf-ident" );
1101 FGSimpleSound *sound;
1102 sound = morse.make_ident( adf_trans_ident, LO_FREQUENCY );
1103 sound->set_volume( 0.3 );
1104 globals->get_soundmgr()->add( sound, "adf-ident" );
1106 int offset = (int)(sg_random() * 30.0);
1107 adf_play_count = offset / 4;
1108 adf_last_time = globals->get_time_params()->get_cur_time() -
1110 // cout << "offset = " << offset << " play_count = "
1111 // << adf_play_count << " adf_last_time = "
1112 // << adf_last_time << " current time = "
1113 // << globals->get_time_params()->get_cur_time() << endl;
1116 // cout << "Found an adf station in range" << endl;
1117 // cout << " id = " << nav.get_ident() << endl;
1122 adf_trans_ident = "";
1123 #ifdef ENABLE_AUDIO_SUPPORT
1124 globals->get_soundmgr()->remove( "adf-ident" );
1126 last_adf_ident = "";
1127 // cout << "not picking up adf. :-(" << endl;
1132 // return the amount of heading needle deflection, returns a value
1133 // clamped to the range of ( -10 , 10 )
1134 double FGRadioStack::get_nav1_heading_needle_deflection() const {
1137 if ( nav1_inrange ) {
1138 r = nav1_heading - nav1_radial;
1139 // cout << "Radial = " << nav1_radial
1140 // << " Bearing = " << nav1_heading << endl;
1142 while ( r > 180.0 ) { r -= 360.0;}
1143 while ( r < -180.0 ) { r += 360.0;}
1144 if ( fabs(r) > 90.0 ) {
1145 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1151 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1152 if ( nav1_loc ) { r *= 4.0; }
1153 if ( r < -10.0 ) { r = -10.0; }
1154 if ( r > 10.0 ) { r = 10.0; }
1162 // return the amount of heading needle deflection, returns a value
1163 // clamped to the range of ( -10 , 10 )
1164 double FGRadioStack::get_nav2_heading_needle_deflection() const {
1167 if ( nav2_inrange ) {
1168 r = nav2_heading - nav2_radial;
1169 // cout << "Radial = " << nav2_radial
1170 // << " Bearing = " << nav2_heading << endl;
1172 while (r> 180.0) r-=360.0;
1173 while (r<-180.0) r+=360.0;
1174 if ( fabs(r) > 90.0 )
1175 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1176 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1177 if ( nav2_loc ) r *= 4.0;
1178 if ( r < -10.0 ) r = -10.0;
1179 if ( r > 10.0 ) r = 10.0;
1187 // return the amount of glide slope needle deflection (.i.e. the
1188 // number of degrees we are off the glide slope * 5.0
1189 double FGRadioStack::get_nav1_gs_needle_deflection() const {
1190 if ( nav1_inrange && nav1_has_gs ) {
1191 double x = nav1_gs_dist;
1192 double y = (fgGetDouble("/position/altitude-ft") - nav1_elev)
1194 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1195 return (nav1_target_gs - angle) * 5.0;
1202 // return the amount of glide slope needle deflection (.i.e. the
1203 // number of degrees we are off the glide slope * 5.0
1204 double FGRadioStack::get_nav2_gs_needle_deflection() const {
1205 if ( nav2_inrange && nav2_has_gs ) {
1206 double x = nav2_gs_dist;
1207 double y = (fgGetDouble("/position/altitude-ft") - nav2_elev)
1209 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1210 return (nav2_target_gs - angle) * 5.0;
1218 * Return true if the NAV1 TO flag should be active.
1221 FGRadioStack::get_nav1_to_flag () const
1224 double offset = fabs(nav1_heading - nav1_radial);
1228 return (offset <= 90.0 || offset >= 270.0);
1236 * Return true if the NAV1 FROM flag should be active.
1239 FGRadioStack::get_nav1_from_flag () const
1242 double offset = fabs(nav1_heading - nav1_radial);
1246 return (offset > 90.0 && offset < 270.0);
1254 * Return true if the NAV2 TO flag should be active.
1257 FGRadioStack::get_nav2_to_flag () const
1260 double offset = fabs(nav2_heading - nav2_radial);
1264 return (offset <= 90.0 || offset >= 270.0);
1272 * Return true if the NAV2 FROM flag should be active.
1275 FGRadioStack::get_nav2_from_flag () const
1278 double offset = fabs(nav2_heading - nav2_radial);
1282 return (offset > 90.0 && offset < 270.0);