Radar emits wide pulse to ensure the distance , and gets narrow pulse by using corresponding pulse compression method when receiving . this is pulse compression 脈沖壓縮是指雷達(dá)通過(guò)發(fā)射寬脈沖,保證足夠的最大作用距離,而接收時(shí),采用相應(yīng)的脈沖壓縮法獲得窄脈沖以提高距離分辨率的過(guò)程。
Its high resolution in range is fulfilled by using pulse compression method . its high resolution in azimuth is achieved by utilizing the doppler information among the signals received by sar at different locations . hence , the acquired image of the targets is of very high resolution 它采用距離向的脈沖壓縮技術(shù)和方位向不同位置上接收到的脈沖間的多普勒信息來(lái)獲得兩維的高分辨率,從而得到高分辨率的目標(biāo)圖像。