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COMPASS

Jump to: Mission Objectives, Mission Instrumentation, Mission Parameters, Additional Information

Mission Photos:

COMPASS-M1 Satellite
COMPASS (Courtesy of Shanghai Astronomical Observatory)

Mission Objectives:

The Compass Navigation Satellite Experimental System is a satellite constellation developed by the Chinese Defense Ministry. The system, also known as BeiDou, is the first space-based regional navigation and positioning network developed by China. COMPASS provides all-weather, two-dimensional positioning data for both military and civilian users. The system has both navigation and communication capabilities and spans most areas of the East Asia region. The satellite network consists of four BeiDou 1 satellites launched in 2000, 2003, and 2007 in geostationary orbit; a fifth satellite, COMPASS-M1, was launched in MEO in April 2007. Additional satellites in the COMPASS constellation have been launched in 2009, 2010, 2011, 2012 and 2015.

COMPASS Mission Parameters:
  COMPASS-M1 COMPASS-M3 COMPASS-MS1 COMPASS-MS2 COMPASS-MS3
Sponsor: Chinese Defense Ministry Chinese Defense Ministry Chinese Defense Ministry Chinese Defense Ministry Chinese Defense Ministry
Expected Life: 3 years 3 years 3 years 3 years 3 years
Primary Applications: Positioning Positioning Positioning Positioning Positioning
Primary SLR Application: Precision orbit determination Precision orbit determination Precision orbit determination Precision orbit determination Precision orbit determination
Launch Date: 13-Apr-2007 29-Apr-2012 25-Jul-2015 25-Jul-2015 2016-02-01
COSPAR ID: 0701101 1201801 1503702 1503701 1600601
SIC: 2001 2004 2007 2008 2011
NORAD: 31115 38250 40749 40748 41315
PRN: C30 C11      
NP Bin Size: 300 seconds 300 seconds 300 seconds 300 seconds 300 seconds
RRA Diameter:          
RRA Shape: Hexagonal Hexagonal Hexagonal Hexagonal Hexagonal
Reflectors: 42 corner cubes 42 corner cubes 42 corner cubes 42 corner cubes 42 corner cubes
Orbit: MEO MEO MEO MEO MEO
Inclination: 55.5 degrees 55.0 degrees 55 55 55
Eccentricity: 0.00068 0.0025 0 0 0
Perigee: 21,500 km 21,500 km 21,500 km 21,500 km 21,500 km
Period: 773.39 min        
Weight: 2,200 kg        
  COMPASS-I3 COMPASS-I5 COMPASS-I6B COMPASS-IS1 COMPASS-IS2
Sponsor: Chinese Defense Ministry Chinese Defense Ministry Chinese Defense Ministry Chinese Defense Ministry Chinese Defense Ministry
Expected Life: 3 years 3 years 3 years 3 years 3 years
Primary Applications: Positioning Positioning Positioning Positioning Positioning
Primary SLR Application: Precision orbit determination Precision orbit determination Precision orbit determination Precision orbit determination Precision orbit determination
Launch Date: 10-Apr-2011 01-Dec-2011 29-Mar-2016 30-Mar-2015 29-Sep-2015
COSPAR ID: 1101301 1107301 1602101 1501901 1505301
SIC: 2003 2005 2012 2006 2010
NORAD: 37384 37948 41434 40549 40938
PRN:       C06 C07
NP Bin Size: 300 seconds 300 seconds 300 seconds 300 seconds 300 seconds
RRA Diameter:          
RRA Shape: Hexagonal Hexagonal Hexagonal Hexagonal Hexagonal
Reflectors: 42 corner cubes 42 corner cubes 42 corner cubes 42 corner cubes 42 corner cubes
Orbit: GEO GEO   GEO GEO
Inclination: 55.6 degrees 55.6 degrees 55.6 degrees 55.6 degrees 55.6 degrees
Eccentricity: 0.0023 0.0023 0.0023 0.0023 0.0023
Perigee: 37,790.2 km 37,790.2 km 35,677 km 37,790.2 km 37,790.2 km
Period: 773.39 min 773.39 min 773.39 min 773.39 min 773.39 min
Weight: 2,200 kg 2,200 kg 2,200 kg 2,200 kg 2,200 kg
  COMPASS-G1
Sponsor: Chinese Defense Ministry
Expected Life: 3 years
Primary Applications: Positioning
Primary SLR Application: Precision orbit determination
Launch Date: 17-Jan-2010
COSPAR ID: 1000101
SIC: 2002
NORAD: 36287
PRN: C01
NP Bin Size: 300 seconds
RRA Diameter:  
RRA Shape: Hexagonal
Reflectors: 90 corner cubes
Orbit: GEO
Inclination: 1.53 degrees
Eccentricity: 0.00018
Perigee: 35,792.9 km
Period:  
Weight:  
Additional Information:

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