遮挡环境下BDS/GPS等权组合载波相位时间传递方法

doi:10.11947/j.AGCS.2018.20180291

测绘学报 ›› 2018, Vol. 47 ›› Issue (S0): 109-116.doi: 10.11947/j.AGCS.2018.20180291

• • 上一篇

遮挡环境下BDS/GPS等权组合载波相位时间传递方法

于合理¹, 郝金明², 郭福生¹, 郭佳郁¹

1. 中国洛阳电子装备试验中心, 河南洛阳 471000;
2. 信息工程大学导航与空天目标工程学院, 河南郑州 450001

收稿日期:2018-06-25 修回日期:2018-10-15 出版日期:2018-12-31 发布日期:2019-05-18
作者简介:于合理(1989-),男,博士,研究方向为GNSS时频传递方法。E-mail:yuhl1989@163.com

BDS/GPS Equal-weight Combined Carrier Phase Time Transfer Method in Occlusion Environment

YU Heli¹, HAO Jinming², GUO Fusheng¹, GUO Jiayu¹

1. Luoyang Electronic Equipment Test Center of China, Luoyang, 471000, China;
2. School of Navigation and Aerospace Engineering, Information Engineering University, Zhengzhou 450001, China

Received:2018-06-25 Revised:2018-10-15 Online:2018-12-31 Published:2019-05-18

摘要/Abstract

摘要： 给出了BDS/GPS组合载波相位时间传递的数学模型，通过设置不同的高度截止角来模拟遮挡环境，对比分析BDS、GPS和BDS/GPS在不同遮挡环境中的时频传递效果。结果表明：当单系统可视卫星较多时，BDS/GPS时频传递性能相比单系统并没有明显提高；当高度截止角高大于30°时，单系统由于可见卫星数不足无法实现连续的时频传递，而BDS/GPS组合仍然可以获得连续的时频传递结果，时频传递的稳定性和收敛速度明显优于单系统。这对于深露天煤矿、城市峡谷等遮挡严重的区域具有十分重要的应用价值。

关键词: BDS/GPS, 载波相位, 时间精度因子, 时间传递, 频率传递

Abstract: The time transfer model is given using BDS/GPS observations, and the results of time and frequency transfer under different cut-off elevation angles are compared between BDS, GPS and BDS/GPS. Experimental results show that the performance of BDS/GPS time and frequency transfer result is not significantly improved compared to the single system when the number of available satellites is enough. However, when the cut-off elevation angle is larger than 30 degrees, the single system can't get continuous time and frequency transfer results, but the BDS/GPS combination can still obtain continuous results. Compared to single system method, both the stability and convergence time are improved. This has a very important application value in some special conditions, for instance, deep open pit mines and urban canyons when not all satellites are visible.

Key words: BDS/GPS, carrier phase, TDOP, time transfer, frequency transfer

中图分类号:

P228

于合理, 郝金明, 郭福生, 郭佳郁. 遮挡环境下BDS/GPS等权组合载波相位时间传递方法[J]. 测绘学报, 2018, 47(S0): 109-116.

YU Heli, HAO Jinming, GUO Fusheng, GUO Jiayu. BDS/GPS Equal-weight Combined Carrier Phase Time Transfer Method in Occlusion Environment[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(S0): 109-116.

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遮挡环境下BDS/GPS等权组合载波相位时间传递方法

BDS/GPS Equal-weight Combined Carrier Phase Time Transfer Method in Occlusion Environment

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