X波段双偏振相控阵雷达回波特征分析与相态识别方法  

Echo characteristics analysis and phase recognition method of X band dual polarization phased array radar

作　　者：冯涛 蔡泽林 李丽 叶钰 简州 FENG Tao;CAI Zelin;LI Li;YE Yu;JIAN Zhou(State Grid Hunan Electric Power Company Disaster Prevention and Reduction Center,Changsha 410029,China)

机构地区：[1]国网湖南省电力有限公司防灾减灾中心,长沙410029

出　　处：《自动化与仪器仪表》2023年第10期54-58,共5页Automation & Instrumentation

摘　　要：X波段双偏振相控阵雷达的主要应用是监测气象灾害,为提升监测精度,提出了X波段双偏振相控阵雷达回波特征分析与相态识别方法。采用相关系数优化与差分传播相移率重构方法提升X波段双偏振相控阵雷达回波信号质量;利用高分辨融合与时频变换检测质量提升后的雷达回波信号时频点,通过时频点聚类与小波频谱特征分离获取雷达回波信号时频特征。将相同位置的雷达回波信号时频特征作为一个样本,采用动态聚类方法针对相应范围内的全部样本实施动态聚类分析,基于分析结果中的聚类中心识别X波段双偏振相控阵雷达回波信号相态。实验结果显示该方法能够提升弱回波的相关系数、消除回波信号异常值,能够较好地输出回波信号时频特征,准确识别回波信号相态。The main application of X band dual polarization phased array radar is to monitor meteorological disasters. In order to improve the monitoring accuracy, the echo characteristics analysis and phase state recognition methods of X band dual polarization phased array radar are studied. The method of correlation coefficient optimization and differential propagation phase-shifting rate reconstruction is used to improve the echo signal quality of X band dual polarization phased array radar;By utilizing high-resolution fusion and time-frequency transformation to detect the time-frequency points of the improved radar echo signal, time-frequency features of the radar echo signal are obtained through time-frequency point clustering and wavelet spectrum feature separation. The time-frequency characteristics of radar echo signals at the same location are taken as a sample, and the dynamic clustering method is used to implement dynamic clustering analysis for all samples within the corresponding range. Based on the clustering center in the analysis results, the phase of X band dual polarization phased array radar echo signals is identified. The experimental results show that this method can improve the correlation coefficient of weak echoes, eliminate the Outlier of echo signals, output better time-frequency characteristics of echo signals, and accurately identify the phase of echo signals.

关 键 词：X波段双偏振 相控阵雷达 回波特征 相态识别 时频特征点 动态聚类算法 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置] P415[自动化与计算机技术—控制科学与工程]