机载雷达微下击暴流风切变信号处理与仿真

微下击暴流风切变是一种对飞机安全有严重危害的大气现象,为了有效分析微下击暴流风切变对飞行器所造成的危害程度。引入了危险因子,建立了微下击暴流风切变的危险因子数学模型,同时建立了一种简单有效的非对称风场模型,运用频域脉冲方法对微下击暴流风切变进行风速估计,由于微下击暴流风切变一般都含有雨滴,则运用多普勒效应和雷达截面积等原理对微下击暴流风切变信号进行了分析与仿真。仿真结果表明,建立的危险因子和风场模型能够真实有效地反映微下击暴流风切变所造成的危害程度,同时频域脉冲对方法能够很好地对微下击暴流风切变信号进行风速估计。

Based on airborne radar microburst wind shear signalprocessing and simulation

Microburst wind-shear is a kind of serious harm to aircraft safety atmospheric phenomena,in order to analysis the hazard rating on the aircraft under microburst wind-shear in effective.Risk factors is introduced, the mathematical model of risk factors is set up under the micro wind flow shear. At the same time set up a simple and effective asymmetric wind field model, using the frequency domain pulse to method of microburst wind shear of wind speed estimation Due to the strike critical wind flow under the micro shear are generally contain rain, using the Doppler effect and principle of radar cross-section strike critical wind flow under the micro shear signals are analyzed with simulation. The simulation results show that Risk factors and the wind field model is established to reflect real and effective strike suddenly and violently under the microburst wind-shear damage caused by the wind flow, at the same time ,frequency pulse the method is very good for microburst wind shear under the shear wind speed estimation.