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精确计算机载雷达地杂波功率一般是对等距离—等多普勒单元网格求积分,但其面积单元复杂多样,计算非常复杂。文中在分析等距离等多普勒分布特点的基础上,提出一种仅沿距离积分的计算杂波功率的方法。利用该方法仿真机载前视气象雷达风切变模式下地杂波功率谱和回波信号,还分析杂波功率谱受载机速度、波束方位和俯仰等参数影响的变化规律,仿真分析结果与飞机实际测量数据相符。
Accurately calculating the clutter power of airborne radar is generally equal distance-equal Doppler cell grid integration, but the area of the unit is complex and diverse, the calculation is very complicated. Based on the analysis of Doppler distribution characteristics such as equidistance, a method of calculating clutter power based on distance integration is proposed. The power spectrum and echo signals of ground clutter in airborne forward wind radar weather forecasting system are simulated by this method. The changes of clutter power spectrum parameters such as speed, beam orientation and pitch are also analyzed. The simulation results The actual measured data of the aircraft match.