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Changed the absolute latitude limit for visible satellites to 81.2 degrees

This commit is contained in:
Klaus Schmidinger 2013-10-30 10:11:55 +01:00
parent 26fbb921f5
commit 83a8d5a561
2 changed files with 5 additions and 4 deletions
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3
HISTORY
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@ -8032,7 +8032,7 @@ Video Disk Recorder Revision History
the last replayed recording (if any) by pressing Ok repeatedly in the Recordings the last replayed recording (if any) by pressing Ok repeatedly in the Recordings
menu. menu.
2013-10-29: Version 2.1.3 2013-10-30: Version 2.1.3
- Changed the return value of cPositioner::HorizonLongitude() to 0 in case the - Changed the return value of cPositioner::HorizonLongitude() to 0 in case the
latitude of the antenna location is beyond +/-81 degrees. latitude of the antenna location is beyond +/-81 degrees.
@ -8046,3 +8046,4 @@ Video Disk Recorder Revision History
because it broke things for the "TechniSat AirStar 2" DVB-T card. because it broke things for the "TechniSat AirStar 2" DVB-T card.
- The LIRC remote control now connects to the socket even if it doesn't yet exist when - The LIRC remote control now connects to the socket even if it doesn't yet exist when
VDR is started (thanks to Lars Hanisch). VDR is started (thanks to Lars Hanisch).
- Changed the absolute latitude limit for visible satellites to 81.2 degrees.

6
positioner.c
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@ -7,7 +7,7 @@
* For an explanation (in German) of the theory behind the calculations see * For an explanation (in German) of the theory behind the calculations see
* http://www.vdr-portal.de/board17-developer/board97-vdr-core/p1154305-grundlagen-und-winkelberechnungen-f%C3%BCr-h-h-diseqc-motor-antennenanlagen * http://www.vdr-portal.de/board17-developer/board97-vdr-core/p1154305-grundlagen-und-winkelberechnungen-f%C3%BCr-h-h-diseqc-motor-antennenanlagen
* *
* $Id: positioner.c 3.3 2013/10/20 09:30:03 kls Exp $ * $Id: positioner.c 3.4 2013/10/30 09:56:34 kls Exp $
*/ */
#include "positioner.h" #include "positioner.h"
@ -15,7 +15,7 @@
#include "config.h" #include "config.h"
#define SAT_EARTH_RATIO 0.1513 // the Earth's radius, divided by the distance from the Earth's center to the satellite #define SAT_EARTH_RATIO 0.1513 // the Earth's radius, divided by the distance from the Earth's center to the satellite
#define SAT_VISIBILITY_LAT 810 // the absolute latitude beyond which no satellite can be seen (degrees * 10) #define SAT_VISIBILITY_LAT 812 // the absolute latitude beyond which no satellite can be seen (degrees * 10)
#define RAD(x) ((x) * M_PI / 1800) #define RAD(x) ((x) * M_PI / 1800)
#define DEG(x) ((x) * 1800 / M_PI) #define DEG(x) ((x) * 1800 / M_PI)
@ -68,7 +68,7 @@ int cPositioner::CalcLongitude(int HourAngle)
int cPositioner::HorizonLongitude(ePositionerDirection Direction) int cPositioner::HorizonLongitude(ePositionerDirection Direction)
{ {
double Delta; double Delta;
if (abs(Setup.SiteLat) < SAT_VISIBILITY_LAT) if (abs(Setup.SiteLat) <= SAT_VISIBILITY_LAT)
Delta = acos(SAT_EARTH_RATIO / cos(RAD(Setup.SiteLat))); Delta = acos(SAT_EARTH_RATIO / cos(RAD(Setup.SiteLat)));
else else
Delta = 0; Delta = 0;