A Clutter Suppression Method for Dual-Polarization Weather Radar Exploiting Spectral Polarimetric Parameters

Ling WANG; Feng TIAN; Daiyin ZHU; Fanwang MENG; Di WU

doi:10.11999/JEIT200605

Volume 43 Issue 3

Mar. 2021

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Article Navigation > Journal of Electronics & Information Technology > 2021 > 43(3): 555-563

Ling WANG, Feng TIAN, Daiyin ZHU, Fanwang MENG, Di WU. A Clutter Suppression Method for Dual-Polarization Weather Radar Exploiting Spectral Polarimetric Parameters[J]. Journal of Electronics & Information Technology, 2021, 43(3): 555-563. doi: 10.11999/JEIT200605

Citation:

Ling WANG, Feng TIAN, Daiyin ZHU, Fanwang MENG, Di WU. A Clutter Suppression Method for Dual-Polarization Weather Radar Exploiting Spectral Polarimetric Parameters[J]. Journal of Electronics & Information Technology, 2021, 43(3): 555-563. doi: 10.11999/JEIT200605

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A Clutter Suppression Method for Dual-Polarization Weather Radar Exploiting Spectral Polarimetric Parameters

doi: 10.11999/JEIT200605

1.
Key Laboratory of Radar Imaging and Microwave Photonics of the Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2.
Leihua Electronic Technology Institute, Aviation Industry Corporation of China, Wuxi 214063, China

Funds: Civil Aircraft Special Project of the Ministry of Industry and Information Technology (MJ-2018-S-28)

Received Date: 2020-07-21
Rev Recd Date: 2020-12-21

Available Online: 2020-12-28

Publish Date: 2021-03-22

Abstract

Abstract

For removing non-weather echoes from the data of dual-polarization weather radar, a clutter filtering method based on Spectral Polarimetric Parameters (SPP) is presented in this paper. Unlike the traditional time- or frequency-domain clutter suppression methods, this method retains the weather echoes and mitigates clutter according to their differences in the Range Doppler (RD) domain. Firstly, the SPPs are defined by exploiting the polarimetric features in the RD domain. With the help of the morphological method, the binary masks are generated. Then, with the object-oriented idea, the binary masks are labeled as weather-object masks or clutter-object ones. The spectral width is introduced as an additional parameter to select weather-object masks, all of which are added up to form the clutter suppression filter and hence the complete weather information can be remained. The X- and C-band polarized weather radar data are used to demonstrate the effectiveness of the proposed method. As compared with Moving Double spectral Linear Depolarization Ratio(MDsLDR) filter and the time-domain clutter suppression method using threshold factor, the proposed SPP clutter suppression filter is more effective in retaining relatively weak weather information. Moreover, the SPP filter has low computational complexity and can be applied to real time for dual-polarization weather radars working in either Simultaneous Transmission and Simultaneous Reception (STSR) mode or Alternate Transmission and Simultaneous Reception(ATSR) mode.
- Dual-polarization weather radar,
- Spectral Polarimetric Parameters (SPP),
- Clutter suppression,
- Binary mask,
- Object-orientated

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References(22)

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