误码率对星载合成孔径雷达图像质量影响的数字仿真研究

Research on The Effect of Bit Error Propability on Spaceborne SAR Image Quality with Digital Simulation Technique

定量分析了星载合成孔径雷达 (SAR)原始回波信号的量化噪声、饱和噪声以及误码噪声对面目标信噪比的影响 ;建立了星载 SAR数字仿真系统 ,对不同误码率条件下的点目标阵场景的星载 SAR原始回波信号进行数字仿真 ,采用 Chirp Scaling算法进行成像处理 ,并对成像结果进行图像质量评估 ,研究了误码噪声对点目标 (尤其是弱信号目标 )性能影响的规律。

The effect of quantification noise,saturation noise and bit error noise of synthetic aperture radar(SAR)raw data on the signal to noise ratio of distributed targets is analyzed.A spaceborne SAR digital simulation system is proposed in this paper.Raw radar echo of point scatter array with different bite error ratio has been simulated and processed using Chirp Scaling algorithm,and the image quality estimation has been done on simulated SAR images,the law of bit error noise on point target image quality has been summarized.