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研究激光对远距离运动目标的辐照功率在激光通信、激光破坏等领域具有重要意义。一般估算辐照功率时常忽略目标的随机运动。在考虑目标的随机运动概率密度分布的基础上,建立了远距离运动目标的精确激光辐照功率模型,并与辐照静止目标时的情形进行了定量的分析比较。辐照运动目标等效于扩大的激光束辐照静止目标。当系统的瞄准方差小于由模型计算出的等效静止方差极限时,可将目标看作为静止状态,由此带来的辐照功率估算误差小于10%,否则在计算时必须考虑目标的运动状态。
Studying the laser irradiation power to long-distance moving targets is of great significance in the fields of laser communication and laser damage. The general estimate of the irradiation power often neglects the target’s random motion. Based on the random motion probability density distribution of the target, an accurate laser irradiation power model of the long-distance moving target was established and compared with the case of irradiating the stationary target. Radiation moving target is equivalent to the extended laser beam irradiation stationary target. When the system’s aiming variance is less than the equivalent static variance limit calculated by the model, the target can be considered as a standstill, resulting in less than 10% error in the radiated power estimation, which otherwise must be considered in the calculation of the target’s motion state .