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Thinned stepped frequency waveforms to furnish existing radars withimaging capability

机译：细化步进频率波形，为现有雷达提供成像功能

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摘要

Introducing imaging capability to an existing radar, even if it is a high RF bandwidth radar, may be difficult, due to limitations on the IF bandwidth, limitations on the pulse repetition frequency and electromagnetic compatibility problems. This paper discusses the use of thinned stepped frequency waveforms, which enable the radar to switch between RF frequencies to provide a synthesized wide RF bandwidth, while the thinning may alleviate some of the constraints imposed on the radar. Random and periodic thinning are discussed in the first part of this paper. However, thinning may cause degradation in image quality, thus an additional technique-Sequence CLEAN deconvolution-is suggested. Sequence CLEAN is an iterative deconvolution algorithm, adopted from the field of radioastronomy, which is capable of resolving close targets in a dense environment, where the system response is heavily affected by high sidelobes
机译：由于中频带宽的限制，脉冲重复频率的限制以及电磁兼容性问题，即使是高射频带宽的雷达，将成像能力引入现有的雷达也可能很困难。本文讨论了变细的步进频率波形的使用，使雷达能够在RF频率之间切换以提供合成的较宽的RF带宽，同时变薄可以减轻对雷达施加的某些约束。本文的第一部分讨论了随机和周期性稀疏。但是，细化可能会导致图像质量下降，因此建议使用另一种技术-序列CLEAN去卷积。序列CLEAN是一种从射电天文学领域采用的迭代解卷积算法，它能够在密集系统中受高旁瓣严重影响的密集环境中解析近距离目标

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