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考虑激光发射系统、激光的大气传输、光学接收系统、探测器和电路以及信号处理系统的影响,对近红外全向激光成像探测系统进行数学建模,基于Visual C++6.0开发了系统仿真软件,并进行仿真实验,实验参数的设置以自主研制的1.06μm全向激光成像探测系统为依据。外场试验采用85式手持激光测距机作为激光发射源,在系统满足探测概率95%,虚警概率1%的前提下,实际测出的最大可探测距离与仿真实验结果相对误差为1.8%。结果表明:该仿真软件能较客观、全面地反映出近红外全向激光成像探测系统在不同环境、不同系统条件下的探测结果,为系统结构论证、参数优化设计以及性能验证提供了依据。
Considering the influence of the laser emitting system, the atmospheric transmission of laser, the optical receiving system, the detector and the circuit and the signal processing system, the near-infrared omnidirectional laser imaging detection system is mathematically modeled, and the system simulation software is developed based on Visual C ++ 6.0 , And the simulation experiment was carried out. The experimental parameters were set based on the self-developed 1.06μm omnidirectional laser imaging detection system. In the field experiment, a 85-type hand-held laser range finder was used as the laser emitter. The relative error between the maximum detectable distance and the simulation result was 1.8% under the premise of the system meeting the detection probability of 95% and the false alarm probability of 1%. The results show that the simulation software can objectively and comprehensively reflect the detection results of NIRS in different environments and different system conditions, and provide the basis for system structure demonstration, parameter optimization design and performance verification.