Improvement of sea-environment sounding technology and signal processing method for HF ground-wave radar

Jinggao Liu; Zhengqi Zheng; Chengfa Wang; Jieyi Yin

doi:10.1117/12.319470

19 August 1998 Improvement of sea-environment sounding technology and signal processing method for HF ground-wave radar

Jinggao Liu, Zhengqi Zheng, Chengfa Wang, Jieyi Yin

Proceedings Volume 3503, Microwave Remote Sensing of the Atmosphere and Environment; (1998) https://doi.org/10.1117/12.319470
Event: Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 1998, Beijing, China

Abstract

In the research of using HF ground wave radar to detect sea environment, we adopt symmetrical Yagi antenna array, correct the influence on antenna beam direction by platform on-sea and sea surface, optimize the schemes in the post- processing, which include multiple correlation, Bragg- Doppler spectrum identification and reconstruction processing. During the signal gathering, the statistical character of slow sea-state variation is utilized. It facilitates the multiple correlation integration and satisfy the requirement for reconstruction processing. So the reliability of extracting sea echo data and articulation of Bragg-Doppler spectrum are greatly improved. We simulate how platform on-sea and sea surface influence beam direction with scale model. And under varied conditions the rise degree of main beam is measured. These data can help us correct the direction of vertical antenna during practical erecting. With these data, we do the inversion of sea surface flow field and wave field parameters. The result agrees with what the standard scaling machine measure.

Citation Download Citation

Jinggao Liu, Zhengqi Zheng, Chengfa Wang, and Jieyi Yin "Improvement of sea-environment sounding technology and signal processing method for HF ground-wave radar", Proc. SPIE 3503, Microwave Remote Sensing of the Atmosphere and Environment, (19 August 1998); https://doi.org/10.1117/12.319470

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KEYWORDS

Antennas

Radar

Signal processing

Signal to noise ratio

Autoregressive models

Doppler effect

Electronics engineering

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