上海航天
上海航天
상해항천
AEROSPACE SHANGHAI
2011年
6期
38-42
,共5页
空空通信%直接序列扩频%数字解扩解调%伪码同步%载波同步
空空通信%直接序列擴頻%數字解擴解調%偽碼同步%載波同步
공공통신%직접서렬확빈%수자해확해조%위마동보%재파동보
Space to space communication%DS/SS%Digital demodulation of DS/SS signal%Sequence synchronization%Carrier synchronization
介绍了实现神舟运输飞船与天宫目标飞行器间数据通信和传输的空空通信子系统的构成，以及空空通信机的功能及其主要性能指标。空空通信子系统采用抗干扰能力强、保密性优的直接序列扩频通信技术。分析了其中的核心中频解扩解调中的伪码同步和载波同步等关键技术，应用数字解调方案降低了子系统调试难度，提高了可靠性。
介紹瞭實現神舟運輸飛船與天宮目標飛行器間數據通信和傳輸的空空通信子繫統的構成，以及空空通信機的功能及其主要性能指標。空空通信子繫統採用抗榦擾能力彊、保密性優的直接序列擴頻通信技術。分析瞭其中的覈心中頻解擴解調中的偽碼同步和載波同步等關鍵技術，應用數字解調方案降低瞭子繫統調試難度，提高瞭可靠性。
개소료실현신주운수비선여천궁목표비행기간수거통신화전수적공공통신자계통적구성，이급공공통신궤적공능급기주요성능지표。공공통신자계통채용항간우능력강、보밀성우적직접서렬확빈통신기술。분석료기중적핵심중빈해확해조중적위마동보화재파동보등관건기술，응용수자해조방안강저료자계통조시난도，제고료가고성。
The composition of the space to space communication subsystem which would realize the transmit the data between Shenzhou spaceship and Tiangong target spacecraft and the functiofi and main performances of the space to space communicator were introduced in this paper. The DS/SS technology which could provide very good performance in anti-jamming and secret communication was applied in the space to space communication subsystem. And the key technologies of sequence synchronization and carrier synchronization in the demodulation of IF DS/SS signal which was the core in DS/SS were analyzed. Using the digital demodulation scheme would reduce the complexity of debugging and increase the reliability of the system.
