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传统单发单收星载SAR受最小天线面积限制,不能同时实现高分辨率和大测绘带,采用多通道接收可以有效解决该问题。本文阐述了多种结构的多通道SAR系统的实现原理,分析比较了多种系统在品质因子、数据量、信噪比、信号处理复杂度以及是否存在盲区等方面的优劣和异同,并给出整体性能评价。这些结论对实际系统设计提供了理论指导和有力支撑,具有一定的参考价值。 更多还原

【Abstract】 Constrained by minimum antenna area,conventional SISO(single input single output)-SAR fails to achieve a high azimuth resolution and wide swath simultaneously.This problem can be resolved by introducing multiple receiving channels in-or cross-azimuth direction.In this paper,several multi-channel SAR systems are explained in detail and contrasted on the terms of merit factor,data volume,signal noise ratio,complexity of signal processing and blind area.Based on the analysis,some conclusions are dr... 更多还原