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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Ground Moving Target Indication With Tandem Satellite Constellations
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Ground Moving Target Indication With Tandem Satellite Constellations

机译：带有串联卫星星座的地面移动目标指示

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摘要

Ground moving target indication (GMTI) from space by existing dual-channel radar systems such as TerraSAR-X and RADARSAT-2 has been shown to perform only insufficiently with respect to the relocation error of targets to their true ground position. Only two parallel receiver channels are too little to suppress the severe ground clutter and to estimate the target's parameters. Although this deficiency may partly be alleviated through antenna aperture switching, the resulting positioning accuracy is still not adequate for effective traffic monitoring purposes. Satisfactory results are only achievable with extended apertures, primarily with satellite constellations. This letter presents a statistical analysis of the performance of different concepts for cooperating back-to-back flying satellite systems. Particularly in anticipation of TanDEM-X, which will form the first operational GMTI-capable coherent synthetic aperture radar constellation after its launch in 2009.
机译：现有的双通道雷达系统（例如TerraSAR-X和RADARSAT-2）从太空向地面移动的目标指示（GMTI）已被证明在将目标重新定位到其真实地面位置方面的误差方面仅表现不足。只有两个并行的接收器通道太少，无法抑制严重的地面杂波并无法估计目标的参数。尽管可以通过切换天线孔径来部分缓解这种缺陷，但最终的定位精度仍不足以进行有效的流量监控。只有使用大孔径，尤其是卫星星座，才能获得令人满意的结果。这封信提供了对背靠背飞行卫星系统协作的不同概念的性能的统计分析。 TanDEM-X尤其值得期待，它将在2009年发射后形成第一个具有GMTI功能的可运行的相干合成孔径雷达星座。

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