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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >A New Method for Radar High-Speed Maneuvering Weak Target Detection and Imaging
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A New Method for Radar High-Speed Maneuvering Weak Target Detection and Imaging

机译：雷达高速机动弱目标检测与成像的新方法

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摘要

Weak-target detection and imaging are the challenging problems of airborne or spaceborne early warning radar. The envelope of a high-speed weak target after range compression spreads over range during the long observation period. To finely refocus a high-speed weak maneuvering target, motion parameters should be accurately obtained for compensating the envelope. This letter proposes a new imaging approach for high-speed maneuvering targets without a priori knowledge of their motion parameters. In this method, the azimuth compression function is constructed in a range and azimuth 2-D frequency domain, which can eliminate the coupling effect between range and azimuth. Theoretical analysis confirms that the methodology can precisely focus targets. Simulation results show that the proposed algorithm improves the performance for detecting and imaging high-speed maneuvering targets.
机译：弱目标检测和成像是机载或星载预警雷达的难题。距离压缩后的高速弱目标的包络线在较长的观察期间内在整个范围内扩展。为了精确地重新聚焦高速弱机动目标，应准确获得运动参数以补偿包络线。这封信为高速机动目标提出了一种新的成像方法，而无需事先了解其运动参数。该方法在距离和方位角二维频域中构造方位角压缩函数，可以消除距离和方位角之间的耦合效应。理论分析证实该方法可以精确地聚焦目标。仿真结果表明，该算法提高了高速机动目标的检测和成像性能。

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