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多重直扩信号的快速捕获是卫星定位与通信系统研制过程中遇到的一个关键技术。它的实现,不仅可以提高系统的多址能力,而且也是系统实现的必要条件。本文阐明了多重信号产生的原因以及可被分离并有效接收的理论依据。提出了一种多重信号快速捕获的方法,给出了硬件实现的方案和部分实验结果。
The rapid acquisition of multiple DS-signals is a key technology encountered in the development of satellite positioning and communication systems. Its realization can not only improve the system’s multiple access capabilities, but also the necessary conditions for system implementation. This article illustrates the causes of multiple signals and the rationale for their separation and effective reception. A method of fast acquisition of multiple signals is proposed. The scheme of hardware implementation and some experimental results are given.