高频地波雷达基于海洋回波的通道幅度自校准方法
Self-calibration method of channel amplitude of HF ground wave radar based on sea echo
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摘要: 针对海洋回波的特性,以及高频地波雷达OSMAR2000的实际工作性能,提出一种基于海洋回波采样数据的自适应通道幅度软件校准方法。该方法不需要辅助信号源,能针对每一距离元进行通道幅度的实时校准,校准后的空间谱质量显著提高,并能在通道失效时给出示警信息。文中给出了现场实测数据的处理结果及比较。Abstract: A software self-calibration method of the channel amplitude of HF ground wave radar based on the received sea echo data is developed in this paper, in accordance with the characteristics of sea echo and the actual performance of the Ocean State Measuring and Analyzing Radar (OSMAR2000). The method does not need auxiliary signal source and can real-time calibrate channel amplitude for every range cell. Using the method, the radar system can give out warning information in the case of channel failure. The quality of spatial spectra improves much after channel amplitude calibration by the method. Some processing results of the OSMAR2000 field measurement and their comparison are illustrated in this paper.
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