Calculation and accuracy evaluation of TGD from IFB for BDS

doi:10.1007/s10291-015-0454-4

	Calculation and accuracy evaluation of TGD from IFB for BDS
	Liu Yinhua 1,2; Li Xiaohui 1,2; Zhang Huijun 1,2; Zhu Feng 1,2; Ren Ye 1,2
刊名	GPS SOLUTIONS
	2016-07-01
卷号	20 期号:3 页码:461-471
关键词	BDS TGD IFB Receiver delay calibration Accuracy evaluation UERE
ISSN号	1080-5370
DOI	10.1007/s10291-015-0454-4
英文摘要	With the development of new global navigation satellite system applications, the demand of high accurate positioning navigation timing (PNT) service becomes urgent. For precise PNT, the timing group delay (TGD) is regarded as an important parameter in the satellite navigation message. Instead of using the absolute receiver hardware delay, a method based on receiver inter-frequency bias (IFB, i.e., differential receiver hardware delay between different frequencies) calibration is presented to deal with the rank deficiency of a calculation matrix and to reduce jumps in TGD solutions in BDS. The double-differenced pseudorange obtained from a pair of zero baseline receivers is used to evaluate the IFB calibration accuracy. The estimated precision of TGD is evaluated and compared with GPS TGD provided by IGS. In order to ensure the quality of assessment, a method based on the difference of dual-frequency ionospheric delay is proposed to compare the accuracy of the estimated TGD and broadcast TGD. Finally, the effect of TGD on the user equivalent range error is analyzed. The analysis result shows that for BDS IGSO satellites, the precision of TGD1, which is the differential hardware delay between B1 (1561.098 MHz) and B3 (1268.52 MHz) frequencies, is better than 0.5 ns, and for GEO and MEO satellites the TGD1 is better than 1 and 2 ns, respectively. The precision of TGD2 of all satellites, which is the differential hardware delay between B2 (1207.14 MHz) and B3 frequencies, is better than 0.5 ns. The accuracy analysis result reveals that the proposed TGD estimation method can provide better results when compared with the broadcast data.
资助项目	National Natural Science Funds of China[61127901] ; National Natural Science Funds of China[61301134] ; Key Laboratory of Precision Navigation Positioning and Timing of Chinese Academy of Sciences
WOS研究方向	Remote Sensing
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000378539400015
资助机构	National Natural Science Funds of China ; National Natural Science Funds of China ; Key Laboratory of Precision Navigation Positioning and Timing of Chinese Academy of Sciences ; Key Laboratory of Precision Navigation Positioning and Timing of Chinese Academy of Sciences ; National Natural Science Funds of China ; National Natural Science Funds of China ; Key Laboratory of Precision Navigation Positioning and Timing of Chinese Academy of Sciences ; Key Laboratory of Precision Navigation Positioning and Timing of Chinese Academy of Sciences ; National Natural Science Funds of China ; National Natural Science Funds of China ; Key Laboratory of Precision Navigation Positioning and Timing of Chinese Academy of Sciences ; Key Laboratory of Precision Navigation Positioning and Timing of Chinese Academy of Sciences ; National Natural Science Funds of China ; National Natural Science Funds of China ; Key Laboratory of Precision Navigation Positioning and Timing of Chinese Academy of Sciences ; Key Laboratory of Precision Navigation Positioning and Timing of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/11183]
专题	中国科学院国家授时中心
通讯作者	Liu Yinhua
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian, Shaanxi, Peoples R China 2.Chinese Acad Sci, Key Lab Precis Nav Posit & Timing, Xian, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Liu Yinhua,Li Xiaohui,Zhang Huijun,et al. Calculation and accuracy evaluation of TGD from IFB for BDS[J]. GPS SOLUTIONS,2016,20(3):461-471.
APA	Liu Yinhua,Li Xiaohui,Zhang Huijun,Zhu Feng,&Ren Ye.(2016).Calculation and accuracy evaluation of TGD from IFB for BDS.GPS SOLUTIONS,20(3),461-471.
MLA	Liu Yinhua,et al."Calculation and accuracy evaluation of TGD from IFB for BDS".GPS SOLUTIONS 20.3(2016):461-471.