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针对舰船气泡尾流激光雷达研发中的三项关键技术———复合散射理论研究、激光断层和偏振检测技术、后向散射抑制技术展开综述,总结了相关领域研究成果并提出新的技术方案。对复杂海洋环境下的激光复合散射理论进行了系统的分析,有针对性地给出了相关研究方法及研究关键点。提出利用激光断层和偏振检测技术对舰船尾流进行检测的新方法。基于Monte Carlo模型分析了尾流激光雷达近场后向散射光的大动态衰减规律,提出一种新的基于雪崩光电二极管的大动态范围信号接收技术。在国内首次成功研发尾流激光雷达样机并首次获得大量详实的海试数据。海试结果表明,该样机对8节航行下的千吨级民用船舶尾流探测距离大于3.7 km。
Aiming at the three key technologies in the research of warship wake laser radar, such as compound scattering theory, laser fault and polarization detection technology and backscattering suppression technology, the research results in related fields are summarized and new technical solutions are proposed . The complex theory of laser scattering in complex ocean environment is systematically analyzed, and the relevant research methods and key points are given. A new method to detect wakes of warships using laser tomography and polarization detection technology is proposed. Based on the Monte Carlo model, the large dynamic attenuation of near-field backscattered light in wake laser radar is analyzed, and a new receiving technique of large dynamic range signal based on avalanche photodiode is proposed. For the first time in China, the wake laser radar prototype was successfully developed and for the first time a large amount of detailed sea trial data was obtained. The sea test results show that the prototype has a wake detection distance greater than 3.7 km for a kilotonous civilian ship under 8-knot navigation.