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DESIGN OF UNDERWATER NON-COAXIAL SINGLE BEAM SCANNING DETECTING SYSTEM

机译:水下非同轴单光束扫描检测系统的设计

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Aiming at the necessity of torpedo detecting near field target in final stage of guidance, a non-coaxial (transmitter and receiver are not on the same axis) single beam scanning detecting and ranging system has been designed to be applied in torpedo. To study this detection system, this paper proposes a Monte Carlo simulation method for the system. The backscattering signal and target echo signal in seawater is simulated, and then the Signal-to-Backscattering-Noise (SBNR) is calculated. Furthermore, the relationship between maximum detecting distance and system parameters is calculated based on the criterion of minimum SNBR. Finally, the optimal system parameters are determined to get maximum detection range. For verifying the correctness of the theoretical models, underwater laser detection optical simulation system is designed to do target detecting experiment in a basin. The comparative analyses of the simulation and the experimental results show that the simulation results fit the experimental data well, thus the correctness of the semi-analytical Monte Carlo model is verified. The optimal parameters in single beam scanning detecting system can be determined according to the simulation and experimental results. The designed underwater laser detecting system provides a new method for the torpedo to detect underwater target in final stage of guidance.
机译:针对在引导阶段的最终阶段检测TARPEDO检测近场目标的必要性,非同轴(发射器和接收器不在同一轴上)单光束扫描检测和测距系统被设计为在鱼雷中应用。为研究该检测系统,本文提出了一种用于系统的蒙特卡罗模拟方法。模拟海水中的反向散射信号和目标回波信号,然后计算信号 - 反向散射噪声(SBNR)。此外,基于最小SNBR的标准计算最大检测距离和系统参数之间的关系。最后,确定最佳系统参数以获得最大检测范围。为了验证理论模型的正确性,水下激光检测光学仿真系统旨在在盆地进行目标检测实验。模拟和实验结果的比较分析表明,仿真结果良好拟合实验数据,从而验证了半分析蒙特卡罗模型的正确性。单光束扫描检测系统中的最佳参数可以根据模拟和实验结果确定。设计的水下激光检测系统为鱼雷提供了一种新方法,以在导向的最终阶段检测水下目标。

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