机载双极化相控阵气象雷达气象目标回波仿真

doi:10.12305/j.issn.1001-506X.2025.01.13

Abstract

Abstract:

To address the difficulty in obtaining measured data from airborne dual-polarization phased array weather radar, a simulation method for meteorological target echoes of airborne dual-polarization phased array weather radar is proposed. Firstly, meteorological scene information is simulated and obtained using the weather research and forecasting (WRF) model. Next, the polarization characteristics of the polarization phased array dipole elements and the scattering characteristics of precipitation targets are analyzed. These aspects are combined to calculate the electric field polarization properties of the dipole array elements during the transmission and reception process and the scattering process of precipitation targets, then the dipole polarization scattering matrix of meteorological targets is obtained. Finally, integrating meteorological scene information and the dipole polarization scattering matrix, the radar meteorological equation is applied to obtain the echo signal of the phased array reference element, then the meteorological target echo signal for the entire elements of dual-polarization phased array radar is obtained. A comparison of the simulation results with actual measurements data validates the reliability of the proposed method.

Key words: airborne weather radar, phased array, dual polarization, meteorological target, radar echo simulation

CLC Number:

TN959.4

Hai LI, Yutong CHEN, Yu XIONG. Simulation of meteorological target echo of airborne dual-polarization phased array weather radar[J]. Systems Engineering and Electronics, 2025, 47(1): 117-125.

Figures/Tables 13

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参数	取值
仿真位置	西经97°, 北纬32°, 美国德克萨斯州
仿真范围/km²	350×350
仿真时间	2015年6月17日
参数化方案	WSM 9
网格精度/m	1 000
嵌套层数	3

参数	取值	参数	取值
飞机高度/m	8 000	波束宽度/(°)	3.5
工作频率/GHz	9.375	脉冲重复频率/Hz	800
阵元数	64	采样脉冲数	64
距离分辨率/m	150	脉冲宽度/μs	1
飞机速度(m/s)	200	扫描方式	平面位置显示

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Simulation of meteorological target echo of airborne dual-polarization phased array weather radar

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