射频直采GNSS数据采集系统的设计与实现

Design and implementation of data collecting system in direct-RF quantization GNSS software receiver

通过射频直接采样技术,使用分路滤波和带通采样方法,实现了对多路射频信号的同步变频,并基于以太网络实现了采集数据的同步传输。实验结果表明,系统能够连续地采集多个射频通道的数据,并通过对L1、L2、L5等不同频点GPS信号的捕获验证了系统的正确性。

This design realized multi-frequency signals sampling and transmission, using RF direct sampling technique. Experi- mental result shows that the system can continuously collect data and from which we can capture the GPS L1, L2, L5 and other signals of different frequencies.