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satang 1.0

 
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-function angles=satang4(strSys1,latA,longA,longsat,strSys2,latB,longB)-calculation of satellite angles: elevation, azimuth, and also relative azimuth and baseline orientation if input data-belongs to two sites-Sources:-Digital satellite communications, 2nd Ed. Author Tri Ha, for satellite azimuth and elevation calculation-http://williams.best.vwh.net/avform.htm#Rhumb for distance and relative azimuth between two coordinates-tested using various satellites and earth stations, and using http://www.sfwx.com/softworks/geoBearing.html and-http://www.geocities.com/senol_gulgonul/linkbudget/azel.html-differences are in part due to the selection of the earth radius and orbit heigth values, and also to possible mistakes in the-code...please point them out-INPUTS-strSys1: string: 'E' for longitude in degrees east, 'W' for longitude in degrees West. no negative values-strSys2: string: 'GC' for GREAT CIRCLE , 'RH' for RHUMB (CONSTANT AZIMUTH: recommended for site diversity purposes)-latXX: latitude of site A or B. + north, - south-longXX: longitude of site A and B: following strSys1.-longsat: longitude of subsatellite point, E or W according to srtSys-OUTPUTS-angles: a structure containing:- .elevation elevation angle to satelite,- .azimuth azimuth to satelite- .poltilt & poltilt_c feed rotation to compensate geographic position -NOTE standing behind the antenna, -rotation is CLOCKWISE for a station -located east of the satellite meridian, -and ANTICLOCKWISE for a station west of -the satellite meridian -poltilt_c is more reliable than poltilt.- .Az_AB true course, azimuth in the direction of site B (rhumb line, constant azimuth)- .distance distance between the two sites- .baselineorientation for site diversity, BOA acording to ITU-R P618-8 definition.-EXAMPLE OF USE-angles=satang4('E',-8.83,13.25,0) | angles=satang('E',-33.93,18.47,0)-angles = |- elevation: 71.2774 | elevation: 45.7078- azimuth: 303.1005 | azimuth: 329.1038-Meteosat satellite, cities of cape town and luanda.--angles=satang4('E',6.4,360-76.4,304.5)-angles =- elevation: 64.3472- azimuth: 106.2730 Intelsat 8A, city of medellin-geographical constants

Tags: Meteosat Satellite, 2nd Ed, Elevation, Azimuth, North, Poltilt, 039gc039 For, 039e039 For, 039rh039 For, 039w039 For, Intelsat, City, True, Earth, Luandaangles Dsatang Angles, Orbit, Relative, Baseline

Platforms: BSD , Mac OS X , Solaris , linux

 
Added: 23 March, 2013 06:13 File size: 10.0 KB
Status: new Download times: 512 kb/s: < 1 sec
Program type: freeware   1 Mb/s: < 1sec
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FREE DOWNLOAD
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satang 1.0

Tags: Meteosat Satellite, 2nd Ed, Elevation, Azimuth, North, Poltilt, 039gc039 For, 039e039 For, 039rh039 For, 039w039 For, Intelsat, City, True, Earth, Luandaangles Dsatang Angles, Orbit, Relative, Baseline

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