1.中国科学院国家授时中心,陕西西安 710600
2.中国科学院大学,北京 100049
[ "钦伟瑾 女,1983年生,河南南阳人.理学博士,副研究员,硕士研究生导师,德国物理研究院时间频率部国家公派访问学者.国际天文学会会员和中国天文学会会员.近年来多次主持国家自然基金项目、技术基础科研项目以及中科院人才项目等.主要从事GNSS时间传递与精密授时工作.E-mail: qwj@ntsc.ac.cn" ]
[ "杨旭海 男,1972年生,陕西渭南人.理学博士,研究员,博士研究生导师,中国科学院国家授时中心高精度时间传递与精密测定轨研究室主任.近年来主持多项国家科研项目,包括国家高技术研究发展计划项目(863项目)、国家自然科学基金项目等.主要从事高精度时间传递与精密测定轨工作.中国电子学会会员编号:E190019703M." ]
收稿:2021-01-12,
修回:2021-09-22,
纸质出版:2023-02-25
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钦伟瑾,杨旭海.一种同频点的卫星接收机时延确定方法[J].电子学报,2023,51(02):324-329.
QIN Wei-jin,YANG Xu-hai.The Determination on Satellite Receiver Delay with the Same Frequency[J].ACTA ELECTRONICA SINICA,2023,51(02):324-329.
钦伟瑾,杨旭海.一种同频点的卫星接收机时延确定方法[J].电子学报,2023,51(02):324-329. DOI: 10.12263/DZXB.20210102.
QIN Wei-jin,YANG Xu-hai.The Determination on Satellite Receiver Delay with the Same Frequency[J].ACTA ELECTRONICA SINICA,2023,51(02):324-329. DOI: 10.12263/DZXB.20210102.
本文提出了一种Galileo E5
x
硬件时延计算方法.当同频点的两颗卫星非常接近时,它们的电离层时延几乎相等.基于此原理,借助GPS和Galileo卫星端的绝对校准值,当角距为2°,5°,10°时,选择高度角为10°,20°,40°,60°的不同类型的Galileo卫星观测值进行试算,实现Galileo接收机 E5
a
频点的校准.结果表明:校准值的结果和高度角成正相关,和Galileo卫星类型以及接收机类型无关;此外,在低纬度区域,当角距小于10°时,角距的变化对校准结果几乎没有影响.
An approach for the calibration of Galileo signals is achieved in this paper. Because of the same frequency in GPS L1 and Galileo E1
when the observed GPS satellite and the Galileo satellite are very close
the ionospheric delay of GPS L1 is considered the same as that of Galileo. Based on the theory
by virtue of the known GPS L1 and Galileo E1 calibration value
when the he calibration value of Galileo E5x has been obtained. When the angular separation is 2°
5° and 10°
the Galileo satellite of different type with the elevation of 10°
20°
40°
60°has been selected for the verification. The result shows
the calibration value is depended on the chosen elevation threshold
which is irrelative to the type of the Galileo satellite and the receiver type. In the low-latitude area
when the angular separation is less than 10°
the variation of angular separation has no influence with the calibration result.
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