Skywave radar decontamination based on the cubic phase model

YOU Wei; HE Zishu; CHEN Xuyuan; HU Jinfeng; HE Qian

Volume 27 Issue 5

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CHINESE JOURNAL OF RADIO SCIENCE > 2012 > 27(5): 875-880.

YOU Wei, HE Zishu, CHEN Xuyuan, HU Jinfeng, HE Qian. Skywave radar decontamination based on the cubic phase model[J]. CHINESE JOURNAL OF RADIO SCIENCE, 2012, 27(5): 875-880.

Reference format:

YOU Wei, HE Zishu, CHEN Xuyuan, HU Jinfeng, HE Qian. Skywave radar decontamination based on the cubic phase model[J]. CHINESE JOURNAL OF RADIO SCIENCE, 2012, 27(5): 875-880.

Reference format:

YOU Wei, HE Zishu, CHEN Xuyuan, HU Jinfeng, HE Qian. Skywave radar decontamination based on the cubic phase model[J]. CHINESE JOURNAL OF RADIO SCIENCE, 2012, 27(5): 875-880.

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Skywave radar decontamination based on the cubic phase model

1.
School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu Sichuan 611731, China
2. Nanjing Research Institute of Electronics Technology, Nanjing Jiangsu 210039, China

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Received Date: December 25, 2011
Available Online: December 30, 2020
Published Date: October 30, 2012

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Abstract

Abstract

The signal of the skywave over-the-horizon radar is reflected by the ionosphere. The perturbation of the ionosphere modulates the phase of the backscattered radar signal, and spread its spectrum. The spread clutter masks the target and makes it difficult to be detected. Before target detection is performed, in order to improve the probability of detection, it is necessary to correct the contaminated radar return. Instantaneous frequency estimation plays a key role in decontamination. The return signal is modeled using a cubic phase (CP) component, and a novel frequency estimation algorithm is proposed based on this model. The simulation result shows that comparing with the Hankel rank reduction(HRR) algorithm, the new algorithm can track larger frequency perturbations thus has better decontamination performance.
- skywave over-the-horizon radar,
- ionospheric contamination,
- cubic phase,
- frequency estimation

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References

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