高速微弱目标长时间积累对雷达方程的影响

摘要

Variation of echo signal power due to variation of target range during a long time integration is not taken into account in traditional radar equation, thus the traditional radar equation can not be used directly. Through ana-lyzing impact of target’ s movement on signal-to-noise ratio ( SNR) of echo signal during high-speed moving target integration time as well as impact on processing time, a radar equation applicable to high-speed weak target long time integration analysis is established;and then relation between target velocity and detection range with inte-gration time and processing time is analyzed, related conclusion is given.%传统雷达方程未考虑积累时间内目标距离变化导致的回波信号功率发生变化，难以直接应用。考虑高速运动目标积累时间内目标运动对回波信号信噪比的影响以及处理时间内目标运动的影响，建立了适用于高速微弱目标长时间积累分析的雷达方程，在此基础上，分析了目标速度、探测距离与积累时间和处理时间的关系，并给出了相应的结论。