Commands and Data Acquisition Station of the Ground Application Subsystem for FY-2C Meteorological Satellite
Zhiqing Zhang · Aerospace Shanghai · 2005
The main performances and operation flowchart of the commands and data acquisition station(CDAS) of the ground application subsystem for FY-2C meteorological satellite were introduced in this paper,and so were the interfaces with the C satellite and other parts of the ground application system.The composition and function of the 10 subsystems in CDAS for C satellite those were antenna, servo and feeding,channel,image acquisition system,trilateration range and rate ranging(TRRR),data collection platform(DCP),tracking,telemetry and command(TTC),image and TTC simulator,calibration,time uniform,information coding and transmitting of low rate information transmission were described.The design principle of CDAS for C satellite was given out,and key technologies such as data demodulation of DCP implemented by group demodulation technology,TRRR positioning by spread spectrum false code,image processing,graphic interface in TTC,and anti 1 long chain by quadrature phase shift keying were presented.The problems of CDAS for C satellite were solved and adaptability adjustment was completed during the periods of on-orbit test and experimental operation.The test result before approval showed that the function and performance of CDAS for C satellite had met the requirement for operation,which operated normally and stably.