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| 基于现代信号处理的罗兰C天波延迟估计研究 | |
| 引用本文： | 吴苗,许江宁,陈志勇,王国成.基于现代信号处理的罗兰C天波延迟估计研究[J].海洋测绘,2011,31(2):49-51. |
| 作者姓名： | 吴苗 许江宁 陈志勇 王国成 |
| 作者单位： | 1. 海军工程大学导航工程系,湖北武汉430033;中国科学院测量与地球物理研究所,湖北武汉430077 2. 海军工程大学导航工程系,湖北武汉,430033 3. 海军902工厂,上海,200083 4. 中国科学院测量与地球物理研究所,湖北武汉,430077 |
| 摘 要： | 传统罗兰C接收机为避免天波信号干扰,采用固定的采样时刻,以致接收机信噪比下降,直接影响了接收机的整体工作性能.分析了三种测量天波时间延迟的现代信号处理方法,并进行了实验仿真分析比对,验证了该方法对于测量天波延迟地波时间的准确性和有效性. |
| 关 键 词： | 罗兰C 天波延迟 反傅里叶变换 谱估计 |
Skywave Delay Estimation of Loran C Based on Modern Signal Processing Methods |
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| WU Miao,XU Jiang-ning,CHEN Zhi-yong,WANG Guo-cheng.Skywave Delay Estimation of Loran C Based on Modern Signal Processing Methods[J].Hydrographic Surveying and Charting,2011,31(2):49-51. | |
| Authors: | WU Miao XU Jiang-ning CHEN Zhi-yong WANG Guo-cheng |
| Institution: | 1.Department of Navigation,Naval University of Engineering,Wuhan,Hubei,430033;2.Institute of Geodesy and Geophysics,Chinese Acadamy of Sciences,Wuhan,Hubei,430077;3.Naval 902 Factory,Shanghai,200083) |
| Abstract: | The traditional Loran C receiver is adopted in fixed sampling time in order to avoid the interference of skywave signal,so this method results in the decline of SNR and affects the receiver＇s performance.The paper introduces three modern signal processing methods that measure skywave time delay.Through analysis and comparison of simulation experiment,the methods are confirmed accurate and effective in measuring skywave time delay. |
| Keywords: | Loran C skywave delay IFFT spectral estimation |
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