超高频雷达基于河流回波的通道校准算法

发布时间：2018-06-17 02:08

  本文选题：超高频雷达 + 通道校准　； 参考：《华中科技大学学报(自然科学版)》2014年09期

【摘要】：针对河流探测的超高频雷达系统,提出了一种利用河流回波信号校准阵列通道的算法.单站超高频雷达垂直于河道方向的径向流速为0m/s,其回波信号对应多普勒谱图的布拉格频点处,利用该频点可以对通道进行校准.这里研究了利用布拉格频率处的回波谱对超高频雷达系统进行通道校准的方法,实测数据处理结果表明,该方法对空间谱估计性能的改善十分明显,大幅提高了信号到达角估计的准确性.
[Abstract]:An algorithm for calibrating array channels using river echo signals is proposed for the ultra-high frequency radar system of river detection. The radial velocity of the single station UHF radar is 0 m / s perpendicular to the channel. The echo signal corresponds to the Bragg frequency point of the Doppler spectrum and the channel can be calibrated by using this frequency point. In this paper, the channel calibration method of UHF radar system using echo spectrum at Bragg frequency is studied. The experimental data processing results show that the performance of spatial spectrum estimation is greatly improved by this method. The accuracy of the signal angle of arrival estimation is greatly improved.
【作者单位】： 武汉大学电子信息学院;
【基金】：国家自然科学基金资助项目(61371063)
【分类号】：TN957.51
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本文编号：2029131