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1 引言 随着卫星通信在现代化战争中的地位日益显著,军事卫星通信系统得到了迅速的发展,同时,对军事卫星通信系统的抗干扰能力提出了更高的要求。为了提高军事卫星通信的抗干扰能力,扩频技术得到了广泛的应用。本文针对扩频卫星通信中的关键技术之一——频率同步进行了简要的分析,提出频率同步应与扩频通信的抗干扰能力相适应的观点,对直接序列扩频的跳频技术应用于军事卫星通信而可能采用的频率同步方案进行了初步的探讨。
1 Introduction With the increasingly prominent status of satellite communications in the modern warfare, the military satellite communication system has been rapidly developed, and at the same time, higher requirements have been set on the anti-interference capability of military satellite communication systems. In order to improve the anti-interference ability of military satellite communications, spread spectrum technology has been widely used. In this paper, one of the key technologies in spread spectrum satellite communication, frequency synchronization, is briefly analyzed. It is proposed that the frequency synchronization should be adapted to the anti-interference ability of spread spectrum communication. The frequency hopping technique of direct sequence spread spectrum Military satellite communications and the possible use of frequency synchronization program conducted a preliminary discussion.