Beidou/Compass Satellite Achieves Geosynchronous Orbit with inclination of 55.06°
in [Physics]
|
Prev: INTERMEDIATE FINANCIAL MANAGEMENT 10E BRIGHAM SOLUTIONS MANUAL
Next: Quantum Gravity 405.8: Blacks Holes are Highest Gravitational by PI, and Binary Black Hole Systems Appear to be Both Repulsive and Gravitational
From: Sam Wormley on 10 Aug 2010 22:23 On 8/10/10 8:32 PM, jimp(a)specsol.spam.sux.com wrote: > In sci.physics Inertial<relatively(a)rest.com> wrote: >> "Sam Wormley" wrote in message >> news:heWdnVMepvRKevzRnZ2dnUVZ_hadnZ2d(a)mchsi.com... >>> >>> Beidou/Compass Satellite Achieves Geosynchronous Orbit >> >> Just wondering .. what does the satellite do and why is such an orbit >> required for it? > > It is the Chinese version of GPS. > > > The "G" in GPS stands for Global. The Chinese satellite navigation system is designed to work over China. See: http://www.gpsworld.com/files/gpsworld/nodes/2010/10315/beidou_igso1_ground_track.jpg
From: Sam Wormley on 10 Aug 2010 22:26 On 8/10/10 8:31 PM, jimp(a)specsol.spam.sux.com wrote: > In sci.physics Sam Wormley<swormley1(a)gmail.com> wrote: >> Beidou/Compass Satellite Achieves Geosynchronous Orbit >> >> http://www.gpsworld.com/gnss-system/compass/news/beidoucompass-satellite-achieves-geosynchronous-orbit-10315 >> August 5, 2010 >> >> News courtesy of CANSPACE Listserve >> >> The first Beidou/Compass inclined geosynchronous orbit (IGSO) satellite >> has achieved geosynchronous orbit. The satellite was launched on July 31 >> from the Xichang Satellite Launch Center in China's Sichuan province. >> >> The inclination of the mean orbit is 55.06 degrees with eccentricity of >> 0.0036 � an essentially circular orbit. The mean east longitude of the >> sub-satellite ground point is 115 degrees, 47 minutes. Here is a plot of >> the repeating ground track: >> >> http://www.gpsworld.com/files/gpsworld/nodes/2010/10315/beidou_igso1_ground_track.jpg >> >> At its northern most sub-satellite latitudes, the satellite should be >> visible from Europe and parts of North America permitting signal >> analysis from facilities in those regions. > > Why would they care? > > What if you wanted to spoof the system--might be a good idea to see how it operates. Did you know that Gentlemen DO read each other's mail!
From: Ed M. on 10 Aug 2010 23:10 A 1999 paper by Daimler-Chrysler folks on a pre-Galileo constellation: http://articles.adsabs.harvard.edu//full/1999ESASP.430..173S/0000173.000.html The paper can be saved one page at a time as *.gif images. Pg. 177 shows a constellation with 21 MEOs and 6 IGSOs, inclined about 63 degrees (the original GPS inclination). The text says: http://articles.adsabs.harvard.edu//full/1999ESASP.430..173S/0000177.000.html "One of the most attractive features of this constellation is that it can provide a full service on a regional basis efficiently."
From: eric gisse on 11 Aug 2010 00:17 Sam Wormley wrote: > Beidou/Compass Satellite Achieves Geosynchronous Orbit > > http://www.gpsworld.com/gnss-system/compass/news/beidoucompass-satellite- achieves-geosynchronous-orbit-10315 > August 5, 2010 > > News courtesy of CANSPACE Listserve > > The first Beidou/Compass inclined geosynchronous orbit (IGSO) satellite > has achieved geosynchronous orbit. The satellite was launched on July 31 > from the Xichang Satellite Launch Center in China's Sichuan province. > > The inclination of the mean orbit is 55.06 degrees with eccentricity of > 0.0036 ? an essentially circular orbit. The mean east longitude of the > sub-satellite ground point is 115 degrees, 47 minutes. Here is a plot of > the repeating ground track: How is this interesting? > > http://www.gpsworld.com/files/gpsworld/nodes/2010/10315/beidou_igso1_ground_track.jpg > > At its northern most sub-satellite latitudes, the satellite should be > visible from Europe and parts of North America permitting signal > analysis from facilities in those regions. > > This is one of the first, if not the first, satellite to use such a > highly inclined circular geosynchronous orbit. The Solar Dynamics > Observatory satellite is in a circular IGSO with an inclination of 28 > degrees. The IGSO satellites of Sirius Satellite Radio use highly > elliptical so-called "tundra orbits."
From: jimp on 11 Aug 2010 01:41
Sam Wormley <swormley1(a)gmail.com> wrote: > On 8/10/10 8:32 PM, jimp(a)specsol.spam.sux.com wrote: >> In sci.physics Inertial<relatively(a)rest.com> wrote: >>> "Sam Wormley" wrote in message >>> news:heWdnVMepvRKevzRnZ2dnUVZ_hadnZ2d(a)mchsi.com... >>>> >>>> Beidou/Compass Satellite Achieves Geosynchronous Orbit >>> >>> Just wondering .. what does the satellite do and why is such an orbit >>> required for it? >> >> It is the Chinese version of GPS. >> >> >> > > The "G" in GPS stands for Global. The Chinese satellite navigation > system is designed to work over China. > > See: > http://www.gpsworld.com/files/gpsworld/nodes/2010/10315/beidou_igso1_ground_track.jpg See: http://en.wikipedia.org/wiki/Anal_retentive -- Jim Pennino Remove .spam.sux to reply. |