多重直扩信号的快速捕获

Fast Acquisition for Overlapping DS-Signals

多重直扩信号的快速捕获是卫星定位及通信系统研制过程中遇到的一个主要课题。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备条件。本文阐明了多重直扩信号的来源以及可被分离的理论依据，给出了多重直扩信号快速捕获的硬件实现方案及部分实验结果，得出了一些重要结论。

Fast acquisition for overlapping DS-signals is an important question in developing satellite fast positioning and communication systems. If that technology is feasible, it will not only increase capabilities of multiple access of the system,but also become an indespensable condition of realizing the system. This paper clarifies the source of overlapping DS-signals and the theoretical basis for distinguishing overlapping DS--signals. The hardware realization scheme and part of the measured results are given,and some important conclusions are drawn.