一种无线数据链测距技术的研究与实现

Research and Implementation of Ranging Technology for a Wireless Data Link

当前无线数据链系统的研究是军事信息化的重要体现,其中的无线数据链定位系统主要完成以单一地面站对多目标进行定位,获得准确的距离数据是实现定位的前提。主要介绍了基于FPGA+DSP架构下的数据链测距系统的实现,采用了伪码非相干测距体制,利用了扩频码良好的自相关性能,主要包括整体框架构成、信号处理的具体实现以及相关问题的分析。最后给出在有线测试条件下的测试结果,测距精度在1 m以内。

The current wireless data link system is an important manifestation of the military information technology.Wireless data link positioning system is a part to complete multi-target positioning by one ground station,and the premise is to obtain the accurate distance data.The implementation of the ranging system is mainly discussed based on FPGA ＋ DSP architecture,the principle of incoherent pseudo code ranging and the good autocorrelation performance of spreading code are adopt.The overall framework,signal processing,and the analysis of relative issues are introduced.Finally,the test results of the wired test condition are given and the ranging accuracy is less than 1 m.