【摘要】 GPS共视法是目前时间频率远距离量值传递的主要技术,传递不确定度可达几个ns。P3码接收机通过对2个频率上观测的电离层实测值的修正,可以提高比对精度,近年来成为国内外研究热点之一。本文利用功能强大的双频多通道P3码接收机EURO-160,结合SR-620时间间隔计数器组成了一套共视比对系统,并根据GPS共视法软件标准化指南研制了配套的数据处理软件。零基线测试的初步结果表明,共视系统的比对精度达到2～3ns,好于单频接收机,可以更好地为时间频率传递服务。更多还原

【Abstract】 GPS common-view is the main method for the time & frequency remote transfer currently,of which the uncertainty can reach several nanoseconds.The P3 code receiver has recently become one of the international research hotspots,which can improve the comparison accuracy by revising ionosphere delay real-time values observed at two frequencies.A powerful dual-frequency and multi-channel EURO-160 P3 code receiver,in combination with SR-620 time interval counter,constitute a common-view comparison system,and the matching data-processing software is completed according to "Technical directives for standardization of GPS time receiver software".A preliminary zero-baseline experiment shows that the common-view comparison can reach the accuracy of 2~3 ns,which is better than the single-frequency receivers.This system can present better time & frequency transfer services.更多还原