A Target Location Method for Missile-borne SAR Images
In the application of missile-borne synthetic aperture radar(SAR),precise localization of target feature points is crucial as it plays a decisive role in matching positioning or target recogni-tion and tracking.The position of each pixel in the image depends on the geometric relationship be-tween the radar antenna and the ground scattering elements.In order to more effectively utilize the relevant information in SAR images,this paper proposes a SAR image target location method based on the distance-Doppler model,uses the method to calculate the coordinate information of each pix-el through the distance-Doppler model and convert it into the geographical coordinates of the target points relative to the radar platform,calculates the target's line-of-sight angle relative to the radar to achieve the navigation correction.The effectiveness of this localization method is verified by sim-ulating SAR radar echoes and performing imaging processing.The positions of target points in the image obtained through the distance-Doppler localization method are compared with theoretical po-sitions to validate the effectiveness of the proposed method.
万方数据
维普
