Optimization design on angle parameters of single-beam pulsed laser orientation recognition underwater system
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摘要: 针对水下弹目交汇时引信需在近程（大于10 m）获取目标的距离和方位信息，为充分利用发射激光能量，增大激光回波功率，对水下单光束脉冲激光方位识别系统角度参数进行了优化设计。通过推导水下脉冲激光方位识别系统探测目标的回波功率方程，建立了回波功率与系统角度参数之间的关系，得出水下脉冲激光方位识别系统角度要求和充满区距离表示式，利用iSIGHT软件，基于多岛遗传算法对角度参数进行了优化计算。结果表明：在不考虑其他影响因素的情况下，发射光束中心与弹轴的夹角t取30，接收视场中心与弹轴的夹角r取34.5，接收视场角r取10时能获得系统最小的充满区距离。所得计算结果可为水下单光束脉冲激光方位识别系统角度参数的设计提供理论依据。Abstract: Aiming at the necessity of fuze getting distance and azimuth information of the target in the short range(greater than 10 m) when underwater target warhead interaction, in order to take full advantage of transmission laser energy, increase the laser echo power, did optimization design on angle parameters of single-beam pulsed laser orientation recognition underwater system. The echo power equation of underwater target detected by pulsed laser orientation recognition system was derived, the relationship between the echo power and the angle parameters was built, the angle conditions and the expression of perfusion area's distance were got. Based on the multi-island genetic algorithm, the angle parameters were calculated by iSIGHT software. The results show that when the angle between the emitting beam center and the axis is 30, the angle between the receiving field of view center and the axis is 34.5, and the field angle take 10 can obtain the minimum perfusion area's distance in the case without consider other factors. Thus, this work can provide a theoretical basis for designing the angle parameters of single-beam pulsed laser orientation recognition underwater system.
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Key words:
- orientation recognition /
- angle parameters /
- echo power /
- laser detection
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