RESOLUTION ENHANCEMENT OF PULSE RADAR BY INVERSION METHOD

The size and weight of marine pulse radar systems must be limited in o rder to mount them on board boats. However, the azimuthal resolution o f a marine radar with a small antenna is degraded by the antenna beam width. It is desirable to use signal processing techniques to increase both the azimuthal resolution and the range resolution of such system s without changing their external configuration. This paper introduces a resolution enhancement method based on deconvolution, which is a ki nd of inversion. The frequency domain deconvolution method is describe d first. The effectiveness of the proposed method is shown by simulati on. Then, an example of resolution enhancement processing is applied t o a pulse radar. The results of practical experiments show that this m ethod is a promising way of upgrading radars by simply processing the received signals.