Integrity monitoring for kinematic precise point positioning in open-sky environments with improved computational performance
文献类型：期刊论文
| 作者 | El-Mowafy,Ahmed3; Wang,Kan1,2 |
| 刊名 | Measurement Science and Technology
 |
| 出版日期 | 2022-05-05 |
| 卷号 | 33期号:8 |
| 关键词 | GNSS precise point positioning integrity monitoring |
| ISSN号 | 0957-0233 |
| DOI | 10.1088/1361-6501/ac5d75 |
| 英文摘要 | Abstract Positioning integrity monitoring (IM) is essential for liability- and safety-critical land applications such as road transport. IM methods such as solution separation apply multiple filters, which necessitates the use of computationally efficient algorithms in real-time applications. In this contribution, a new approach that significantly improves the computation time of the measurement update of the Kalman filter is presented, where only one matrix inversion is applied for all filters with measurement subsets. The fault detection and identification method and computation of the protection levels (PLs) are discussed. The computational improvement comes at the expense of a small increase in the PL. Test results for precise point positioning (PPP) with float ambiguities in an open-sky and suburban environment demonstrate the reduced computation time using the proposed approach compared to the traditional method, with 23%–42% improvement. The availability of IM for PPP, i.e. when the PL is less than a selected alert limit of 1.625 m, ranged between 92% and 99%, depending on the allowable integrity risk, tested at 10?5 and 10?6, and the observation environment. |
| 语种 | 英语 |
| WOS记录号 | IOP:MST_33_8_085004 |
| 出版者 | IOP Publishing |
| 源URL | [http://210.72.145.45/handle/361003/13824]  |
| 专题 | 国家授时中心_时间频率测量与控制研究室 |
| 通讯作者 | El-Mowafy,Ahmed |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing, People’s Republic of China 2.National Time Service Center, Chinese Academy of Sciences, Xi’an, People’s Republic of China 3.School of Earth and Planetary Sciences, Curtin University, Perth, Australia |
| 推荐引用方式 GB/T 7714 | El-Mowafy,Ahmed,Wang,Kan. Integrity monitoring for kinematic precise point positioning in open-sky environments with improved computational performance[J]. Measurement Science and Technology,2022,33(8). |
| APA | El-Mowafy,Ahmed,&Wang,Kan.(2022).Integrity monitoring for kinematic precise point positioning in open-sky environments with improved computational performance.Measurement Science and Technology,33(8). |
| MLA | El-Mowafy,Ahmed,et al."Integrity monitoring for kinematic precise point positioning in open-sky environments with improved computational performance".Measurement Science and Technology 33.8(2022). |
入库方式： OAI收割
来源：国家授时中心
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