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引用本文：

杨亮,郭佩,秦红磊.射频直接采样多频GNSS信号采集系统的实现[J].电讯技术，2011，51（8）： - . [点击复制]
YANG Liang,GUO Pei,QIN Hong-lei.Implementation of a Multi frequency GNSS Signal Collecting System Based on Direct RF Sampling[J].，2011，51（8）： - . [点击复制]

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射频直接采样多频GNSS信号采集系统的实现
杨亮,郭佩,秦红磊
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(北京航空航天大学电子信息工程学院, 北京 100191)

摘要:

设计了一种多频信号采集系统。系统使用射频直接采样技术，不需混频，对多频信号同时采样。然后进行分路滤波，最后通过以太网对多路信号进行同步采集。该方法不仅使系统结构简单灵活，同时减少了由模拟组件引入的干扰。实验结果表明，系统能够连续地采集多个频带的数据，并通过对“北斗”系统(COMPASS)信号的捕获验证了系统的有效性。

关键词: 全球导航卫星系统射频直接采样带通采样多频接收机软件无线电以太网

DOI：

基金项目:

Implementation of a Multi frequency GNSS Signal Collecting System Based on Direct RF Sampling

YANG Liang,GUO Pei,QIN Hong-lei

(School of Electronic and Information Engineering, Beijing University of Aerona utics and Astronautics,Beijing 100191，China)

Abstract:

A multifrequency signal collecting system is designed.The system uses RF directsampling without mixing and samples the multifrequency signals at the sa me time. After optical filtering,it collects the multifrequency sign a ls simultaneously through the Ethernet. This design can not only make the system simple and flexible, but also decrease the interference of the analog component s. Experimental results show that the system can continuously collect data from multiple frequencies,which verifies the feasibility of the system by capturing t he C OMPSS signals.

Key words: GNSS direct RF quantization bandpass sampling multi-f requency receiver software defined radio Ethernet