中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 新疆天文台
  3. 研究单元未命名
  4. 射电天文研究室
  5. 行星科学研究组
A High-Accuracy, High Anti-Noise, Unbiased Frequency Estimator Based on Three CZT Coefficients for Deep Space Exploration Mission

文献类型：期刊论文

作者Lu, Weitao2; Chen, Lue2; Wang, Zhen1; Cao, Jianfeng2; Ren, Tianpeng2
刊名SENSORS
出版日期2022-10-01
卷号22期号:19页码:18
关键词Doppler unbiased frequency estimation CZT anti-noise ability Mars exploration
DOI10.3390/s22197364
通讯作者Lu, Weitao(looweitao@126.com)
英文摘要Deep space exploration navigation requires high accuracy of the Doppler measurement, which is equivalent to a frequency estimation problem. Because of the fence effect and spectrum leakage, the frequency estimation performances, which is based on the FFT spectrum methods, are significantly affected by the signal frequency. In this paper, we propose a novel method that utilizes the mathematical relation of the three Chirp-Z Transform (CZT) coefficients around the peak spectral line. The realization, unbiased performance, and algorithm parameter setting rule of the proposed method are described and analyzed in detail. The Monte Carlo simulation results show that the proposed method has a better anti-noise and unbiased performance compared with some traditional estimator methods. Furthermore, the proposed method is utilized to process the raw data of MEX and Tianwen-1 satellites received by Chinese Deep Space Stations (CDSS). The results show that the Doppler estimation accuracy of MEX and Tianwen-1 are both about 3 millihertz (mHz) in 1-s integration, which is consistent with that of ESA/EVN/CDSN and a little better than that of the Chinese VLBI network (CVN). Generally, this proposed method can be effectively utilized to support Chinese future deep space navigation missions and radio science experiments.
WOS关键词INTERPOLATION ; REAL
资助项目Chinese Academy of Sciences Foundation of the young scholars of western[2020-XBQNXZ-019] ; National Natural Science Foundation of China (NSFC)[11973015] ; National Natural Science Foundation of China (NSFC)[11833001]
WOS研究方向Chemistry ; Engineering ; Instruments & Instrumentation
语种英语
WOS记录号WOS:000867136500001
出版者MDPI
资助机构Chinese Academy of Sciences Foundation of the young scholars of western ; National Natural Science Foundation of China (NSFC)
源URL[http://ir.xao.ac.cn/handle/45760611-7/4911]  
专题射电天文研究室_行星科学研究组
通讯作者Lu, Weitao
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Beijing Aerosp Control Ctr, Beijing 100094, Peoples R China
推荐引用方式
GB/T 7714		 Lu, Weitao,Chen, Lue,Wang, Zhen,et al. A High-Accuracy, High Anti-Noise, Unbiased Frequency Estimator Based on Three CZT Coefficients for Deep Space Exploration Mission[J]. SENSORS,2022,22(19):18.
APA Lu, Weitao,Chen, Lue,Wang, Zhen,Cao, Jianfeng,&Ren, Tianpeng.(2022).A High-Accuracy, High Anti-Noise, Unbiased Frequency Estimator Based on Three CZT Coefficients for Deep Space Exploration Mission.SENSORS,22(19),18.
MLA Lu, Weitao,et al."A High-Accuracy, High Anti-Noise, Unbiased Frequency Estimator Based on Three CZT Coefficients for Deep Space Exploration Mission".SENSORS 22.19(2022):18.

入库方式： OAI收割

来源：新疆天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。