波形对气象雷达探测的影响研究

对于雷达系统来说,发射波形决定了雷达系统的信号处理方式,因此发射的波形对于雷达系统来说十分重要。常规的气象雷达波形单一,在气象探测中存在不足;基于这个问题,从改变气象雷达波形的角度出发,研究波形对气象雷达探测的影响。分别从脉冲压缩后主旁瓣比、波形对雨量的衰减程度以及多普勒效应方面对三种波形进行仿真和分析,得出当降雨强度为中雨以上和小雨时分别采用线性调频波形信号和13位巴克码波形信号进行探测较为理想,当降雨强度在短时间内变化较大时则采用组合波形信号探测较为合适。

The influence of waveform of weather radar detection research

Abstract] For radar system, launch waveform determines the signal processing method of the radar system, so the emission waveforms for radar system is very important. Single conventional weather radar waveform, shortcomings in meteorological observation, based on this problem, this article from the Angle of the change of weather radar waveform, the waveform of the influence of the weather radar detection. Respectively from the pulse compression sidelobe ratio, to have the away leg wave attenuation degree of rainfall and the doppler effect of three kinds of waveform simulation and analysis, find that when the rainfall intensity were used to moderate rain and drizzle over the chirp waveform signal and 13 Barker ideal waveform signal detection, rainfall intensity changes in a short time when a large wave signal is applied to detect the most suitable combination.