基于导航信号模拟器的采集回放测试方法研究

随着卫星导航产业的迅猛发展,导航终端测试技术越来越得到重视。传统的室内模拟测试和实际信号测试各有优缺点,因而产生了采集回放测试,通过采集存储实际卫星导航信号,并在实验室环境下进行回放,能够有效完成卫星导航终端的实际使用性能测试。基于导航信号模拟器,对采集回放系统做了介绍。选用国产多模接收机为参考标准接收机,以静态场景为例,从终端测试结果角度,分析了终端采集回放定位精度,对基于导航信号模拟器的采集回放测试方法进行了研究。

Study on the Record and Playback Test Methods of Navigation Signal Simulator

Navigation terminal testing technology has been getting more and more attention with the rapid development of satellite navigation industry. Traditional laboratory simulation test and actual signal test have advantages and disadvantages. Thus record and playback test has been created. It can effectively complete the actual use test of satellite navigation terminal through acquisition and storage of actual satellite navigation signal and playback under laboratory environment. The record and playback system is described based on the navigation signal simulator. Domestic multi mode receiver is selectd as the reference standard receiver. Taking the static scene as an example, the terminal′s accuracy of record and playback is analyzed from the terminal test results perspective. The record and playback test method has been studied based on the navigation signal simulator.