相关间距和跟踪环路与GNSS伪距偏差的相关性研究

来源 :第九届中国卫星导航学术年会 | 被引量 : 0次 | 上传用户:yuhuiru871124
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GNSS伪距偏差问题在多频信号应用开始阶段就引起了广泛关注.接收机内部的信号处理技术不同会对伪距偏差的属性和大小产生影响.GNSS信号在传输和射频芯片接收时会产生码片抖动,在多频信号应用中,码片抖动产生的伪距偏差需要进行修正.本文应用具有10种相关间距和2种跟踪环路(标量和矢量)的双频软件接收机对模拟器和真实信号进行处理,研究伪距偏差与相关间距和跟踪环路的相关性.对于现有接收机,相关间距和跟踪环路固定,对不同卫星的码片抖动具有不同的反应.该测试将有助于接收机设计者为不同的卫星信号选取适合的相关间距,为不同的应用建立不同的跟踪回路.
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