一种精确估计区域北斗接收机硬件延迟的方法

doi:10.11947/j.AGCS.2016.20160044

测绘学报 ›› 2016, Vol. 45 ›› Issue (8): 929-934.doi: 10.11947/j.AGCS.2016.20160044

一种精确估计区域北斗接收机硬件延迟的方法

李昕¹, 郭际明¹, 周吕^1,2, 覃发超^1,3

1. 武汉大学测绘学院, 湖北武汉 430079;
2. 桂林理工大学广西空间信息与测绘重点实验室, 广西桂林 541004;
3. 西华师范大学国土资源学院, 四川南充 637000

收稿日期:2016-01-28 修回日期:2016-04-25 出版日期:2016-08-20 发布日期:2016-08-31
作者简介:李昕(1989-),男,博士生,研究方向为GNSS精密数据处理。E-mail:whuxin@hotmail.com
基金资助:
国家自然科学基金（41474004）；精密工程与工业测量国家测绘地理信息局重点实验室开放基金（PF2013-10）；广西空间信息与测绘重点实验室资助课题（15-140-07-32）

An Accurate Method for the BDS Receiver DCB Estimation in a Regional Network

LI Xin¹, GUO Jiming¹, ZHOU Lü^1,2, QIN Fachao^1,3

1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
2. Guangxi Key Laboratory for Spatial Information and Geomatics, Guilin University of Technology, Guilin 5410043, China;
3. Land and Resources College, China West Normal University, Nanchong 637000, China

Received:2016-01-28 Revised:2016-04-25 Online:2016-08-20 Published:2016-08-31
Supported by:
The National Nature Science Foundation of China (No. 41474004);The Open Foundation of Key Laboratory of Precise Engineering and Industry Surveying of National Administration of Surveying; Mapping and Geoinformation (No.PF2013-10);Guangxi Space Information and Mapping Key Laboratory of Funding Issues (No. 15-140-07-32)

摘要/Abstract

摘要： 提出了一种精确估计区域北斗接收机硬件延迟（DCB）的方法。该方法不需要传统复杂的电离层模型，在已知一个参考站接收机硬件延迟的条件下，利用正常情况下电离层延迟量和卫星-接收机几何距离强相关这一特点，采用站间单差法来精确估计区域内BDS接收机的硬件延迟。试验结果表明，该方法单站估计的单站北斗接收机连续30 d的硬件延迟RMS在0.3 ns左右。通过GEO卫星双频观测值扣除已知卫星DCB和本文方法估计的接收机DCB，计算对应穿刺点一天的VTEC并和GIM格网内插结果并进行比对分析，二者大小和变化趋势均符合较好，进一步验证了本文提出的方法具有可靠性。

关键词: 北斗, 接收机硬件延迟, 区域, 站间单差, VTEC

Abstract: An accurate approach for receiver differential code biases (DCB) estimation is proposed with the BDS data obtained from a regional tracking network. In contrast to the conventional methods for BDS receiver DCB estimation, the proposed method does not require a complicated ionosphere model, as long as one reference station receiver DCB is known. The main idea for this method is that the ionosphere delay is highly dependent on the geometric ranges between the BDS satellite and the receiver normally. Therefore, the non-reference station receivers DCBs in this regional area can be estimated using single difference (SD) with reference stations. The numerical results show that the RMS of these estimated BDS receivers DCBs errors over 30 days are about 0.3 ns. Additionally, after deduction of these estimated receivers DCBs and knowing satellites DCBs, the extractive diurnal VTEC showed a good agreement with the diurnal VTEC gained from the GIM interpolation, indicating the reliability of the estimated receivers DCBs.

Key words: BDS, receiver DCB, regional area, SD, VTEC

中图分类号:

P228

李昕, 郭际明, 周吕, 覃发超. 一种精确估计区域北斗接收机硬件延迟的方法[J]. 测绘学报, 2016, 45(8): 929-934.

LI Xin, GUO Jiming, ZHOU Lü, QIN Fachao. An Accurate Method for the BDS Receiver DCB Estimation in a Regional Network[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(8): 929-934.

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一种精确估计区域北斗接收机硬件延迟的方法

An Accurate Method for the BDS Receiver DCB Estimation in a Regional Network

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