An eLoran Signal Cycle Identification Method Based on Joint Time-Frequency Domain
文献类型：期刊论文
| 作者 | Yan, Wenhe2,3,4; Dong, Ming1; Li, Shifeng2,3,4; Yang, Chaozhong2,4; Yuan, Jiangbin2,4; Hu, Zhaopeng2,4; Hua, Yu2,3,4 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2022 |
| 卷号 | 14期号:2页码:20 |
| 关键词 | eLoran cycle identification skywave interference time of arrival spectrum division |
| DOI | 10.3390/rs14020250 |
| 英文摘要 | The eLoran system is an international standardized positioning, navigation, and timing service system, which can complement global navigation satellite systems to cope with navigation and timing warfare. The eLoran receiver measures time-of-arrival (TOA) through cycle identification, which is key in determining timing and positioning accuracy. However, noise and skywave interference can cause cycle identification errors, resulting in TOA-measurement errors that are integral multiples of 10 mu s. Therefore, this article proposes a cycle identification method in the joint time-frequency domain. Based on the spectrum-division method to determine the cycle identification range, the time-domain peak-to-peak ratio and waveform matching are used for accurate cycle identification. The performance of the method is analyzed via simulation. When the signal-to-noise ratio (SNR) >= 0 dB and skywave-to-groundwave ratio (SGR) <= 23 dB, the success rate of cycle identification is 100%; when SNR >= -13 dB and SGR <= 23 dB, the success rate exceeds 75%. To verify its practicability, the method was implemented in the eLoran receiver and tested at three test sites within 1000 km using actual signals emitted by an eLoran system. The results show that the method has a high identification probability and can be used in modern eLoran receivers to improve TOA-measurement accuracy. |
| WOS关键词 | NAVIGATION ; DECOMPOSITION ; WAVES |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000747322900001 |
| 出版者 | MDPI |
| 源URL | [http://210.72.145.45/handle/361003/13928]  |
| 专题 | 国家授时中心_授时方法与技术研究室 |
| 通讯作者 | Yan, Wenhe |
| 作者单位 | 1.Beijing Inst Tracking & Telecommun Technol, Beijing 100094, Peoples R China 2.Chinese Acad Sci, Key Lab Precise Positioning & Timing Technol, Xian 710600, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Wenhe,Dong, Ming,Li, Shifeng,et al. An eLoran Signal Cycle Identification Method Based on Joint Time-Frequency Domain[J]. REMOTE SENSING,2022,14(2):20. |
| APA | Yan, Wenhe.,Dong, Ming.,Li, Shifeng.,Yang, Chaozhong.,Yuan, Jiangbin.,...&Hua, Yu.(2022).An eLoran Signal Cycle Identification Method Based on Joint Time-Frequency Domain.REMOTE SENSING,14(2),20. |
| MLA | Yan, Wenhe,et al."An eLoran Signal Cycle Identification Method Based on Joint Time-Frequency Domain".REMOTE SENSING 14.2(2022):20. |
入库方式： OAI收割
来源：国家授时中心
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