论文部分内容阅读
本文根据聚束式SAR能够在小范围内获得超高分辨力微波图象的特点，从计算机辅助层析照相技术入手，提出和详细推导了一种改进的、适用于聚束式SAR成像的直接付立叶重建DFR层析算法．该算法与传统的DFR算法相比，简化了目标付立叶域信息重构过程、降低了雷达系统的A／D采样率和脉冲重复频率PRF、完成了初步的相位补偿、便利了硬件处理的实现、提高了成像效率。
In this paper, the characteristics of ultra-high resolution microwave image can be obtained in a small area according to the spotlight SAR. From the perspective of computer-aided tomography, an improved direct-beam SAR imaging system is proposed and derived in detail Fourier reconstruction DFR tomography algorithm. Compared with the traditional DFR algorithm, this algorithm simplifies the reconstruction of target Fourier domain information, reduces the A / D sampling rate and pulse repetition frequency (PRF) of the radar system, completes the initial phase compensation and facilitates the hardware processing Achieve, improve the imaging efficiency.