航天扩频测控系统抗传统测控信号干扰研究

随着扩频技术的应用，航天测控网形成了传统测控体制与扩频测控体制相结合的局面，会出现潜在的相互干扰问题。针对这种情况，运用仿真软件建立模型，根据传统测控信号经过相关器后频谱的变化，分析扩频测控系统的处理增益，并详细说明了在扩频测控信号接收带宽内距中心载波不同位置的传统测控信号对扩频测控系统处理增益的影响，以及不同扩频码速率下系统处理增益的变化情况。最后运用本文的分析成果进行举例计算。

Researches on Aerospace Spread-spectrum TT＆C System Anti-interference of Traditional TT＆C Signal

Along with the spread-spectrum technology being applied to the TT＆C system, the aerospace TT＆C network is in the situation that the traditional TT＆C system coexists with the spread-spectrum TT＆C system. The potential interference will exist, In accordance with this problem, the paper uses firstly the simulation software modeling and analyses the processing gain of spread-spectrum by researching the spectrum changes when traditional TT＆C signals pass through the correlator. Secondly, it expatiates on the impact on the processing gain given by different rates of PN code and different traditional TT＆C signal whose carrier is at different positions relative to spread-spectrum system carrier inside the received bandwidth. Finally, it gives an example derived from the results of this paper,