摘要
计算机仿真技术广泛用于天气雷达信号分析,常规的天气雷达回波模拟是采用的基于单纯的功率谱的方法,文中主要是利用真实天气雷达基数据和功率谱相结合的方法,利用MATLAB模拟天气雷达天线接收到的回波序列,这样模拟出的天气雷达回波更接近真实天气雷达回波。首先以假设的功率谱参数拟合气象回波功率谱,仿真生成天气雷达回波序列,并通过PPP算法验证假设的功率谱参数,然后利用真实雷达基数据作为功率谱参数,仿真生成天气雷达回波序列,并采用PPP算法得到模拟的功率谱参数并画出雷达回波图。最后,将真实雷达回波图和模拟雷达回波图作对比,经过误差分析表明,该模拟方法平均误差强度比可以0.03以下。
Computer simulation is extensively used in radar signal analysis, the conventional weather radar echo simula- tion is based on the simple method of power spectrum. The main method of this paper is to combine the usage of the weather radar base data and the power spectrum method to simulate the echo signal received from the antenna with MAT- LAB, so that the echoes are closer to the real weather radar return. Firstly, using assumptive parameters to fit the mete- orological echo power spectrum, and simulating the weather radar echoes, and through PPP algorithm verifies the power spectrum parameters. Then utilizing the real radar base data as power spectrum parameters, and using simulated parame- ters calculated through oes, and through error PPP to plot the radar echoes. At last, simulated radar echoes are compared with real radar ech- analysis, it shows that the average error intensity ratio can be less than 0.03.
出处
《成都信息工程学院学报》
2016年第1期12-17,共6页
Journal of Chengdu University of Information Technology
基金
四川省教育厅重点资助项目(16ZA0209)
四川省教育厅面上资助项目(11ZB257)
四川省科技厅应用基础资助项目(2016JY0106)
关键词
天气雷达
回波
信号仿真
weather radar
echo
signal simulation
