咨询与建议

看过本文的还看了

相关文献

该作者的其他文献

文献详情 >Signal quality analysis and qu... 收藏

Signal quality analysis and quality check of BDS3 Precise Point Positioning in the Arctic Ocean

Signal quality analysis and quality check of BDS3 Precise Point Positioning in the Arctic Ocean

作     者:Xiaoguo Guan Hongzhou Chai Guorui Xiao Zhenqiang Du Wenlong Qi Xueping Wang Xiaoguo Guan;Hongzhou Chai;Guorui Xiao;Zhenqiang Du;Wenlong Qi;Xueping Wang

作者机构:College of Urban and Environmental SciencesXuchang UniversityXuchang 461000China Institute of Geospatial InformationInformation Engineering UniversityZhengzhou 450001China Department of Civil EngineeringHenan Vocational College of Water Conservancy and EnvironmentZhengzhou 450001China 

出 版 物:《Acta Oceanologica Sinica》 (海洋学报(英文版))

年 卷 期:2022年第41卷第2期

页      面:166-179页

核心收录:

学科分类:08[工学] 080401[工学-精密仪器及机械] 081105[工学-导航、制导与控制] 0804[工学-仪器科学与技术] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程] 

基  金:The Science and Technology of Henan Province under contract No.212102310029 the National Natural Science Founation Cultivation Project of Xuchang University under contract No.2022GJPY007 the Educational Teaching Research and Practice Project of Xuchang University under contract No.XCU2021-YB-024 

主  题:BDS3 Arctic Ocean signal quality analysis protection level quality check Precise Point Positioning satellite navigation 

摘      要:This study analyzes the signal quality and the accuracy of BeiDou 3 rd generation Satellite Navigation System(BDS3) Precise Point Positioning(PPP) in the Arctic Ocean. Assessment of signal quality of BDS3 includes signal to noise ratio(SNR), multipath(MP), dilution of precision(DOP), and code-minus-carrier combination(CC). The results show that, 5 to 13 satellites are visible at any time in the Arctic Ocean area as of September 2018, which are sufficient for positioning. In the mid-latitude oceanic region and in the Arctic Ocean, the SNR is 25–52 dB Hz and the MP ranges from-2 m to 2 m. As the latitude increases, the DOP values show large variation, which may be related to the distribution of BDS satellites. The CC values of signals B1 I and BIC range from-5 m to 5 m in the mid-latitude sea area and the Arctic Ocean, which means the effect of pseudorange noise is small. Moreover, as to obtain the external precise reference value for GNSS positioning in the Arctic Ocean region is difficult, it is hard to evaluate the accuracy of positioning results. An improved isotropy-based protection level method based on Receiver Autonomous Integrity Monitoring is proposed in the paper, which adopts median filter to smooth the gross errors to assess the precision and reliability of PPP in the Arctic Ocean. At first, the improved algorithm is verified with the data from the International GNSS Service Station Tixi. Then the accuracy of BDS3 PPP in the Arctic Ocean is calculated based on the improved algorithm. Which shows that the kinematic accuracy of PPP can reach the decimeter level in both the horizontal and vertical directions, and it meets the precision requirements of maritime navigation.

读者评论 与其他读者分享你的观点

用户名:未登录
我的评分