为了在内场对激光制导**的作战能力进行鉴定，设计了激光指示信号内场仿真系统。针对该仿真系统的组成及其工作原理，分别对激光指示信号的发散角、能量及方向的内场等效方法进行了分析，设计并标定了三者的动态调整装置。试验结果表明：该系统动态模拟的激光指示信号光斑直径相对误差小于2.5%，能量衰减动态调整误差小于0.2 dB，方位及俯仰的动态调整误差分别小于1.3 mrad、0.6 mrad。该仿真系统已应用于某光电对抗内场仿真项目中，可为激光制导**内场鉴定试验提供高仿真度的激光指示信号。

In order to make appraisal of the combat capability for laser-guided weapons in internal field, the laser signal simulation system was designed. First of all, for the composition of the laser signal simulation system and its working principle, the internal field simulation and equivalent methods of laser signal divergence angle, energy and direction were analyzed respectively, and the dynamic adjustment of the three devices was calibrated. The experiment results show that: The relative error of dynamic simulation of the laser signal spot diameter is less than 2.5%, the dynamic adjustment error of energy attenuation is less than 0.2 dB, dynamic adjustment error of azimuth and elevation are respectively less than 1.3 mrad, 0.6 mrad. The simulation system has been applied in the photoelectric countermeasure simulation project, and this simulation system can provide high degree of laser signal simulation for laser-guided weapons qualification test.