高载频大带宽条件下雷达系统失真补偿与高分辨参数化ISAR成像方法研究

ISAR imaging technology can obtain abundant information of non-cooperative target, thus it is one of the important means of radar target recognition. To improve the quality of ISAR image, it is necessary to increase the radar signal bandwidth, for example,the signal carrier freqency and bandwidth of United States HUSIR radar has been transformed to W band and 8GHz respectively. The increasing of radar signal carrier frequency and bandwidth poses special problems on ISAR imaging process, including the system distortion compensation, target motion compensation and image reconstruction, etc. It is difficult to obtain satisfactory imaging results using traditional ISAR imaging methods. The project is based on the development trend of ISAR imaging radar, and aims to further improve the quality of ISAR image using high frequency & large bandwidth signal. Methods for system distortion compensation, target motion compensation, and large bandwidth ISAR imaging, will be researched deeply, and will be verified by simulated and experimental data. The researching results can provide important theoretical methods to support the development of wideband ISAR imaging radar, and has important theoretical and practical significance to further improve the quality of ISAR image and the ability of precise target recognition.

ISAR成像技术可以获取非合作目标的丰富信息，是雷达目标识别的重要手段之一。而增加雷达信号带宽，则是提高ISAR成像质量的必然要求，如美国建造的HUSIR雷达信号载频W波段、带宽达8GHz。 雷达信号载频的提高和带宽的增大，对目标ISAR成像中的系统失真补偿、目标运动补偿及图像重构等技术带来了特殊的问题，应用传统ISAR成像方法很难获得令人满意的成像效果。本项目立足于ISAR成像雷达系统的发展趋势，为进一步改善高载频、大带宽信号形式下的ISAR成像质量，从宽带雷达系统失真补偿、高载频大带宽ISAR成像运动补偿、大带宽条件下的参数化ISAR成像方法等方面着手，深入开展高分辨ISAR成像新方法研究，并结合仿真和实测数据进行验证。本项目研究，可为ISAR成像雷达的发展提供重要的理论方法支持，对于进一步改善ISAR成像质量、提高目标精细识别能力，具有重要的理论和现实意义。

ISAR成像技术可以获取非合作目标的丰富信息，是雷达目标识别的重要手段之一。而增加雷达信号带宽，则是提高ISAR成像质量的必然要求，如美国建造的HUSIR雷达信号载频W波段、带宽达8GHz。 雷达信号载频的提高和带宽的增大，对目标ISAR成像中的系统失真补偿、目标运动补偿及图像重构等技术带来了特殊的问题，应用传统ISAR成像方法很难获得令人满意的成像效果。本项目立足于ISAR成像雷达系统的发展趋势，为进一步改善高载频、大带宽信号形式下的ISAR成像质量，从宽带雷达系统失真补偿、高载频大带宽ISAR成像运动补偿、大带宽条件下的参数化ISAR成像方法等方面着手，深入开展高分辨ISAR成像新方法研究，并结合仿真和实测数据进行验证。本项目研究，可为ISAR成像雷达的发展提供重要的理论方法支持，对于进一步改善ISAR成像质量、提高目标精细识别能力，具有重要的理论和现实意义。