合成孔径雷达卫星车辆运动侦察概率探究

Discussion on reconnaissance probability for moving ground targets using SAR

针对合成孔径雷达卫星侦察运动车辆概率难以确定的问题,提出运用概率分布理论把卫星对运动车辆的侦察转变为对机动车辆运动潜在区域侦察的思想:理论证明正态分布具有最大熵值,即最大不确定性,可以最大程度反映某些机动车辆运动的不确定性,如导弹发射车;用机动车辆在潜在区域服从正态分布的模型对机动车辆运动潜在区域进行构建,并得出卫星对运动车辆侦察识别的模型,最后通过仿真近似得出卫星对某些车辆运动侦察的概率值。

Aiming at the problem that it is difficult to determine the detection probability of the synthetic aperture radar(SAR)satellite on moving vehicles,the paper proposed the idea that transforms the satellite detection from on moving vehicles into on moving potential region of the vehicles by using the theory of probability distribution:as having proved by theory,normal distribution has the maximum entropy value,that is,the maximum uncertainty,which reflects the moving uncertainty of some vehicles to the greatest extent,e.g.missile launchers;the moving potential region of vehicles was constructed by using the normal distribution model of the vehicles in the potential region,and the reconnaissance recognition model of satellites on moving vehicles was given.Finally the detection probability of satellites on some moving vehicles was approximately calcualted by simulation.