| 基于LFM信号的分布式空间动平台定位技术 |
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| 引用本文： | 刘博宇,李陟,杨于杰,李宏宇,史建华. 基于LFM信号的分布式空间动平台定位技术[J]. 系统工程与电子技术, 2017, 39(3): 482-487. DOI: 10.3969/j.issn.1001-506X.2017.03.04 |
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| 作者姓名： | 刘博宇 李陟 杨于杰 李宏宇 史建华 |
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| 作者单位： | 1. 北京无线电计量测试研究所, 北京 100854;;2. 中国航天科工防御技术研究院科技委, 北京 100854 |
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| 摘 要： | 提出了一维测距结合二维测向的分布式空间动平台间相对定位方法。根据宽带正负斜率线性调频（linear frequency modulation,LFM）信号的时频特性,结合微波双向技术实现了动平台间的相对距离测量,并提出了测频率解相位模糊的短基线干涉仪高精度测向方法,解决了传统多基线干涉仪测角模型的概率性解模糊问题,同时对平台相对运动引起的多普勒干扰进行有效抑制。最终通过评估系统对该方法的定位精度进行了有效验证。
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Locating distributed moving space platforms based on LFM signals |
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| LIU Boyu,LI Zhi,YANG Yujie,LI Hongyu,SHI Jianhua. Locating distributed moving space platforms based on LFM signals[J]. System Engineering and Electronics, 2017, 39(3): 482-487. DOI: 10.3969/j.issn.1001-506X.2017.03.04 |
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| Authors: | LIU Boyu LI Zhi YANG Yujie LI Hongyu SHI Jianhua |
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| Affiliation: | 1. Beijing Institute of Radio Metrology and Measurement, Beijing 100854, China;2. Science and TechnologyCouncil of Defense Technology Academy, China Aerospace Science & Industry Corporation, Beijing 100854, China |
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| Abstract: | A method combining distance and direction measurement which could realize relative location between moving space platforms is proposed. With the characteristic of wide-band chirp up and chirp down linear frequency modulation (LFM) signals, the distance is measured using the microwave two-way technology, the phase ambiguity while direction finding is solved through frequency measurement, and solved the ambiguity resolution probabilistic of the traditional multi-baseline interferometer angle measurement model, the Doppler Effect caused by relative movement is efficiently depressed also.The positioning accuracy is validated with the evaluation system. |
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