合成孔徑雷達要得到高分辨率的成像,必須保證天線波束指向恒定。本文以DSP 為核心構造天線平臺數字控制系統來對大氣擾動造成的雷達載體的角運動進行補償，當雷達載體在方位向、橫滾向及俯仰向發生角運動時，天線平臺數字控制系統控制平臺向相反方向轉動，從而保證天線指向恒定，得到高分辨率的雷達圖像。
關鍵詞：雷達天線平臺；數字控制系統；DSP；角運動補償
Abstract: In order to obtain high resolution radar images, the antenna direction of SAR must be steady and precision. In this paper, with the DSP as the core, the digital control system of antenna platform can compensate the angle movement of the radar carrier due to the atmosphere interference. When radar carrier generates angle movement on the direction of drift, roll and pitch, the digital control system of antenna platform will drive the platform rotate reversely to guarantee the invariableness of the antenna direction and gain high resolution radar images.
Keywords: antenna platform of radar; digital control system; DSP; compensation of angle movement