Characteristics


	The result of in-orbit test of "ChinaStar-1" shows that the satellite performance fully meets the Contract Specification. The use of the satellite will provide customers at home and abroad high quality space segment resource and play an important role in promoting the development of satellite communication in China and Asia-Pacific region.

"ChinaStar-1" communication satellite system characteristics
　　　Designer and producer: Lockheed Martin Corporation
　　　Bus:                   A2100A
　　　Stabilization:         Stable 3-axis
　　　Total power:           8394W(Beginning of life)
                             6797W(End of life)
　　　Spacecraft dry weight: 1418Kg
　　　Design life:           15years
　　　Gain control step:     2dB(range:0-22dB)
　　　Polarization isolation:≥33dB
　　　Polarization:          Orthogonal dual linear polarization
　　　Orbital location:      87.5°E
　　　Pointing accuracy:     ±0.12°
　　　Station keeping:       ±0.05°（S/N,E/W）
　　　Coverage area:         China, South , West, East, Central and Southeast Asia

"ChinaStar-1"communication satellite payload

Payload	C-Band	Ku-Band
Number of transponders	18	20
Channel bandwidth	12x36MHz 6x72MHz	16x36MHz 4x72MHz
TWTA	45W TWTA	85W TWTA(36MHz) 135W TWTA(72MHz)
EIRP(beam center)	41dBW	52dBW(36MHz) 54dBW(72MHz)
EIRP(neighboring countries)	39dBW	46dBW(36MHz) 48dBW(72MHz)
G/T(beam center)	+1dB/K	+5dB/K
Saturated flux density	-75～-97dBW/m²	-70～-92dBW/m²
Frequency range	5925-6425MHzfor receive 3700-4200MHzfor transmit	14.00-14.5GHzfor receive 12.25-12.75GHzfor transmit
Beacon frequency	3700.5MHz(Vertical) 4199.5MHz(Horizontal)	12250.5MHz(Vertical) 12749.5MHz(Horizontal)