基于星载宽刈幅散射计的海面舰船目标检测方法与识别

针对全球海面舰船目标检测的需求，结合宽刈幅与方位高分辨的需求，提出了一种基于星载宽刈幅散射计的海面舰船目标检测方法。该方法使用扇形波束旋转扫描散射计，发射宽带线性调频信号，对回波信号进行方位高分辨，海面目标二维检测，得到舰船的多次观测信息。使用方位角、多普勒频率、高分辨距离像等观测数据，计算船长、船速、与卫星运动方向夹角，并对舰船类型进行初步分类识别，实现辅助检测的功能。仿真结果表明：该方法能够实现对海面舰船的检测，得到有效的舰船信息，具备辅助检测的能力，对未来星载雷达海面舰船目标检测与识别提供了可实现的路径。

Ship Target Detection and Recognition Method based on Wide Swath Spaceborne Scatterometer

Meeting the expectation of ship targets detection on sea surface， considering the need of wide swath and high resolution of azimuth， a method for detecting ship targets on sea surface based on wide swath spaceborne scatterometer is proposed. In this method， the scatterometer uses a sector beam rotating scanning antenna， transmits wideband LFM signal， carries out azimuth high-resolution processing and two-dimensional ship target detection on sea surface， and finally the ship target observation data in multi azimuth are obtained. Using observation data， such as azimuth， Doppler frequency and one dimensional high resolution range image， ship length， ship speed and the included angle with satellite movement direction are calculated， ship type is preliminarily and recognition， the function of auxiliary detection is realized. The simulation results show that this method can detect the ships on the sea， get the effective ship information， and expand the ability of auxiliary detection.Furthermore，we present suggestions for the future research to improve the ability of Ship Target Detection and Recognition.