运动目标回波与地表杂波的多普勒频移的仿真

由双站雷达方程与地表双站散射杂波的模拟，对寻的导弹接受运动目标回波与地表杂波的多普勒频移建立了数值仿真程序，数值模拟在俯射、等高、仰视、尾追等情形下地表杂波对半主动雷达对半主动雷达寻的导弹制导的影响。结果表明，俯射时杂波主瓣有一很高电平，并随着俯角的减小而降低。在这种情形下，如果目标作适当横向机动，目标信号可能完全被杂波主瓣掩盖。当目标超低空飞行时，杂波旁瓣电平将相当地高。文中对导弹半主动雷达寻的

Simulation of Doppler frequency shift for a moving target and ground clutter

Employing the bistatic radar equation and modelling of ground clutter,numerical simulation of the Doppler frequency shift of a moving target and ground echos is developed.Clutter effects on guidance of a semi active radar missile under different situations such as plunging fire, stern attack etc.are discussed.The results show that the main lobe of the clutter can be very high in the case of plunging fire and is decreasing as the angle of depression is reduced.As the target is transversely moving to enhance clutter effects, the target signal might be submerged in clutters.When the target is at very lower elavation, the side lobe of the clutter might reach a high level and can seriously degrade the target tracking in low grazing attack.