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由于可见光、红外等光电设备对近海面(50 m范围内)的低空目标进行跟踪探测时受大气折射效应影响显著,导致探测距离增大或缩短,伴随出现多目标现象,增加了系统的虚警概率,干扰目标的跟踪。基于近海面海气通量算法与射线跟踪算法建立海上光电传播特征评估模型,并利用2009年12月在黄海北部某海域开展的负折射环境下光电探测的实验数据,实时评估了负折射特征高度、最大探测距离等关键参数,仿真模拟了海上多目标图像,验证了模型的性能。结果表明:利用实时海洋气象环境信息,模型可以较准确地评估最大探测距离,并能模拟不同距离上的目标图像,为海上光电系统提供了有效的环境保障信息。
Due to visible and infrared optoelectronic devices on the sea (50 m range) of the low-altitude target tracking detection by the atmospheric refraction effect is significant, resulting in detection range increases or decreases, with the emergence of multi-target phenomenon, an increase of the system of false alarm Probability, interference target tracking. Based on the sea surface air flux algorithm and ray tracing algorithm, a model to evaluate the characteristics of offshore optoelectronic propagation is established. Based on the experimental data of photodetection in a negative refraction environment conducted in the northern Yellow Sea in December 2009, the negative refraction height , The maximum detection distance and other key parameters, simulates the multi-target images at sea and verifies the performance of the model. The results show that the model can accurately estimate the maximum detection distance and simulate the target images at different distances by using the real-time marine meteorological environment information, which can provide an effective environmental protection information for the offshore photovoltaic system.