Sar Image Noise Impact Assessment

Radar imaging is an epoch-making achievement in modern exploration science. It made the basal function of radar entitative changed, and it radically enlarged human's ability of observing the nature and the living space. Because the synthetic-aperture radar can't be influenced by the weather and it can accomplish high graphics reconnaissance for the landform, establishment and immovable or slowly-speeding target in the area of mapping. So it has the important martial value. This had been testified in the series of brushfire in these years. To cover our armies'important equipment and the furnishment of battle, take cover operation, it urgently needs to study effective technique aiming at SAR system jamming.In actual combat, it's very difficulty to make SAR system invalidation. There is a practicably way that is using jamming to debase SAR system efficiency. So it needs to study all kinds of jamming's influence aiming at SAR system. Through the evaluating for the jamming effet, it affords warranty for the optimizing of jamming mod and jamming technique. At present, there is no publish which is systematic study the jamming efficiency for SAR image. The primary aspect of this dissertation studied is the jamming evaluation for SAR image based on the target distinguishing.On the base of analyzing SAR image and jimming, this dissertation study the characteristic of SAR images and SAR jamming method. With analyzing the characteristic of radar image aim, this dissertation puts forward an external arithmetic for SAR jamming evaluation based on the image quality and target detecting, and gives the scales for jamming evaluation and the method of target detecting.The method for jamming evaluation in this dissertation is achieved after SAR imaging by data processing, and it is objectively and apace. So this study has a high value for SAR jamming technique, ATR (automatic target recognizing), etc.