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提出了一种新型星载方位多波束ScanSAR工作模式,实现了在保持方位向高分辨率的前提下对距离向测绘带大幅扩展。分析了该工作方式的特点及主要相位误差,给出了相应的误差补偿方法。介绍了该工作方式下回波数据的模拟方法,并讨论了几种适合该工作方式的成像算法。最后通过仿真对该工作方式的可行性及补偿方法的有效性进行了验证。 更多还原

【Abstract】 This paper proposes a novel work mode of spaceborne ScanSAR with multiple azimuth beams,where the range swath coverage can be greatly extended while the azimuth high resolution remains unchanged.Based on the analysis of the characteristics and main phase errors of this mode,the compensating methods for these errors are given.Then the echo data simulating methods for this mode are introduced and the corresponding imaging algorithms are discussed as well.Thus the feasibility of this mode and the v... 更多还原