基于FPGA的脉冲雷达成像研究与实现

Research and Implementation of Pulse Radar Imaging Based on FPGA

针对脉冲雷达成像的图像裂缝、小目标难以识别和坐标变换的问题,将数学形态学应用于雷达目标成像,实现了对成像中存在的图像裂缝的修补和小目标的展宽。基于传统坐标转换查表法,提出了一种三维优化查表法实现了快速准确的坐标转换、解决了坐标转换中的重点与漏点问题。最后用于实际航海雷达,验证了本文方法的可行性。

In order to solve the problems such as image crack, difficult to recognize little target and coordinate conversion in pulse radar imaging. Mathematical morphology is applied in the radar target imaging to fill the crack and expand the little target. On the basis of traditional look-up table （LUT） for coordinate conversion, a three-dimensional optimal look-up table method is proposed and high-speed and accurate coordinate conversion can be achieved, the problems of point missing and repeated point are solved. Successful application of the approach in a navigation radar verified that this approach is effective.