Deception jammer suppression in fractional Fourier transformation domain with random chirp rate modulation |
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Authors: | Gang Lu Guan Gui Yun Bu Yu Lei YongQiang Chen |
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Affiliation: | 1. School of Electrical Engineering and Electronic Information, Xihua University, Chengdu, China;2. Department of Electronics and Information Systems, Akita Prefectural University, Akita-ken, Japan |
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Abstract: | The issue addressed here is deception jammer suppression in radar systems. Advances in electronic countermeasure (ECM) technology are likely to change the requirements for electronic counter-countermeasures (ECCM), and the original specifications from which the systems were designed may no longer be appropriate. Here, the fraction Fourier transformation (FrFT) is used as a means of signal representation and filtering. A two-phase process is proposed based on random chirp rate modulation. First, the jamming signal is focused and excised. Second, the target echo is then focalized and refined. The approach yields to a two-block device in an actual radar system. |
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Keywords: | Deception jammer fractional Fourier transformation pulse diversity electronic counter-countermeasure |
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