Improved Demodulator for Deep Space Communication
Demodulator is a vital part for deep space telemetry system. On the condition of low signal-tonoise ratio, lower bit rate and more sorts of modulation types are used in deep space communication. Comparing with the conventional telemetry demodulator, some improved technologies are added to satisfy the requirements of deep space telemetry. An overview of the demodulation technology is provided here and key technologies applied in deep space demodulation are analyzed. The testing results of demodulator show that the demodulation loss can be lower than 0.3dB, bit synchronization and the Es/NO estimation can be achieved correctly at less than 5dB.
deep space TT&C telemetry demodulation low SNR low demodulation loss
PAN Xi LI Xiaoliang
Beijing Institute of Technology Beijing .China Beijing Research Institute of Telemetry Beijing, China
国际会议
2010 International Conference on Signal and Information Processing(2010年IEEE信号与信息处理国际会议 ICSIP2010)
长沙
英文
33-36
2010-12-14（万方平台首次上网日期，不代表论文的发表时间）