當地面雷達在觀測空中飛行物體時，由於觀測距離通常極長，故只能允許在較小的角度範圍內進行影像處理。因此目標影像的品質很差。一般將此動態影像系統轉化為靜態的反合成孔徑雷達的模式處理。不過，此刻亦只能在小的旋轉角度下進行回波資料擷取。通常反合成孔徑雷達要有好的橫向距離解析度是需要大的旋轉角度的。本論文的目的是在反合成孔徑雷達的處理過程中應用高解析度技術，以期改善上述的缺點。

　　The process of radar image for a moving target is by ISAR technique. Due to the limited data of backscattered field from small angular domain, the quality of this radar image is degraded. In order to get a radar image with better quality, the data from wide angular domain are necessary. In this thesis, superresolution technique is used to improve the quality of radar image with data from small angular domain.