水下单光束扫描探测系统光路参数优化设计

谭亚运; 张合; 张祥金; 查冰婷

doi:doi:10.3788/irla201645.0612001

红外与激光工程, 2016, 45 (6): 0612001, 网络出版: 2016-07-26

水下单光束扫描探测系统光路参数优化设计

Optimization design on optical parameters of underwater single-beam scanning detection system

论文大纲

谭亚运 ^*张合张祥金查冰婷

作者单位

南京理工大学智能弹药技术国防重点学科实验室, 江苏南京 210094

单光束扫描光路参数探测区域信噪比 single-beam scanning optical parameters detecting field SNR

摘要

针对水下单光束扫描探测系统探测水中近场目标的需求, 为抑制海水后向散射干扰, 提高系统信噪比, 对系统光路参数进行了优化设计。通过推导系统盲区距离公式、水中目标回波和后向散射功率方程, 分析了系统探测区域和信噪比同光路参数的关系。在不同水质条件下, 基于粒子群算法(PSO)对光路参数进行了优化计算。结果表明: 对探测区域为6-10 m的系统, 当发射光束与接收视场平行, 接收视场半角为9 mrad, 收发间距为10.6 cm时, 系统信噪比达到最佳。为验证理论模型的正确性, 设计了水下激光探测光路模拟系统, 测试不同光路参数下系统信噪比, 实验结果与理论值一致。优化结果可为水下单光束扫描探测系统光路设计提供理论依据。

Abstract

Aiming at the necessity of underwater single-beam scanning detection system detecting near field target, optical parameters were optimized to suppress the backscatter by sea and improve system SNR. Blind distance formula, echo power equation of underwater target and sea backscatter were derived to analyze the relationship among detection area, system SNR and optical parameters. The optical parameters were optimizationally calculated based on particle swarm optimization(PSO) under different water qualities. The results showed that, for the system detection area was 6-10 m, when the transmitted beam was parallel to receiving field, half receiving FOV was 9 mrad, and the baseline distance was 10.6 cm, the system got the best SNR. To prove the correctness of the theoretical model, optical simulation system of underwater laser detection was designed to test system SNR under different optical parameters, the experimental result was consistent with theoretical result. The optimization results can provide theory basis for designing optical parameters of underwater single-beam scanning detection system.

参考文献

[1] Luo Song. Study on application of blue-green laser in torpedo weapon[J]. Optics & Optoelectronic Technology, 2010,8(6):52-54. (in Chinese.)

[2] Pan Shuguang, Deng Jiahao, Qiu Zhiliang. Characteristic analysis of detection environment of underwater laser fuze[J]. Journal of Detection & Control, 2007, 29(1): 44-47. (in Chinese)

[3] Zha Bingting, Zhang He. Scanning frequency and pulse frequency of single-beam pulsed laser fuze[J]. Infrared and Laser Engineering, 2014, 43(7): 2081-2086. (in Chinese)

[4] Huang Youwei, Jin Weiqi, Wang Xia, et al. Theoretical optical backscattering model for staring underwater laser imaging[J]. Acta Optica Sinica, 2007, 27(7): 1191-1197. (in Chinese)

[5] Li Li, Gao Zhiyun, Wang Xia, et al. Optical backscatter calculations for an underwater range-gated imaging system[J]. Transactions of Beijing Institute of Technology, 2003, 23(4): 488-491. (in Chinese)

[6] Liu Xueming, Zhang Mingde, Sun Xiaohan. A new kind of underwater laser imaging system[J]. Chinese Journal of Lasers, 2000, 27(3):206-210. (in Chinese)

[7] Han Hongwei, Zhang Xiaohui, Ge Weilong. Study of the mode and maximum detecting performance of underwater laser range-gated imaging system[J]. Chinese Journal of Lasers, 2011, 38(1): 220-226. (in Chinese)

[8] Wang Lei, Xu Zhiyong, Zhang Qiheng, et al. Detection sensitivity analysis of underwater blue-green laser imaging system[J]. Infrared and Laser Engineering, 2012, 41(1): 79-84. (in Chinese)

[9] Zha Bingting, Zhang He, Zhang Xiangjin, et al. Optimization design on angle parameters of single-beam pulsed laser orientation recognition underwater system[J]. Infrared and Laser Engineering, 2013, 42(4): 895-899. (in Chinese)

[10] Wan Jun, Liang Ruitao, Hu Qingping. Calculation of water backscattering signal and estimation of optical coefficient for underwater laser detection system[J]. Optics & Optoelectronic Technology, 2012, 10(6): 43-48. (in Chinese)

[11] Xu Qiyang, Yang Kuntao, Wang Xinbing, et al. Blue-Green Lidar Ocean Survey[M]. Beijing: National Defence Industrial Press, 2002: 60-113. (in Chinese)

谭亚运, 张合, 张祥金, 查冰婷. 水下单光束扫描探测系统光路参数优化设计[J]. 红外与激光工程, 2016, 45(6): 0612001. Tan Yayun, Zhang He, Zhang Xiangjin, Zha Bingting. Optimization design on optical parameters of underwater single-beam scanning detection system[J]. Infrared and Laser Engineering, 2016, 45(6): 0612001.

水下单光束扫描探测系统光路参数优化设计

关于本站 Cookie 的使用提示

全站搜索

水下单光束扫描探测系统光路参数优化设计

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索