GNSS软件接收机中频信号数据分析

摘要

中频信号是软件接收机研制重要输入数据.以通过位捕获器对实际GPS信号进行采集获取的实际数据为基础,说明了GPS中频数字信号的生成方法,并完成了对实际数据的捕获算法实现,为进一步研究提供基础.%Intermediate frequency (if) signal is the important input data for the research of software receiver. Based on the signal from the Bit-grab which gathers the real GPS signal, a method is presented to generate GPS intermediate frequency digital signal At the same time,completion of the actual data acquisition,the basis for further research is provided.