A Variable-Scale Coherent Integration Method for Moving Target Detection in Wideband Radar
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| Název: | A Variable-Scale Coherent Integration Method for Moving Target Detection in Wideband Radar |
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| Autoři: | Tingkun Lu, Feng He, Lei Yu, Manqing Wu |
| Zdroj: | Remote Sensing, Vol 14, Iss 3156, p 3156 (2022) |
| Informace o vydavateli: | MDPI AG |
| Rok vydání: | 2022 |
| Sbírka: | Directory of Open Access Journals: DOAJ Articles |
| Témata: | wideband radar, moving target detection, multi-rate filter bank, variable-scale transformation, coherent integration, Science |
| Popis: | Accurate integration of the extended target’s energy is one of the important challenges of moving target detection in wideband radar. In this paper, a coherent integration method for wideband radar, i.e., variable-scale moving target detection (VSMTD), is proposed to resist range migration and Doppler broadening. On the one hand, subband decomposition can effectively integrate the energy of the extended target in range using variable-scale transformation, accomplished by modulating the filter bank. On the other hand, it increases the coherent integration time by mitigating the range migration in a sufficiently narrow subband. The discrete Fourier transform (DFT) modulated filter bank and the fast Fourier transform (FFT) algorithm are also used to achieve fast VSMTD implementation. Finally, the simulation results demonstrate the superior performance of the proposed VSMTD method. |
| Druh dokumentu: | article in journal/newspaper |
| Jazyk: | English |
| Relation: | https://www.mdpi.com/2072-4292/14/13/3156; https://doaj.org/toc/2072-4292; https://doaj.org/article/6a804d5133534e6d83361495cd4c4322 |
| DOI: | 10.3390/rs14133156 |
| Dostupnost: | https://doi.org/10.3390/rs14133156 https://doaj.org/article/6a804d5133534e6d83361495cd4c4322 |
| Přístupové číslo: | edsbas.D6F15035 |
| Databáze: | BASE |
Nájsť tento článok vo Web of Science | Abstrakt: | Accurate integration of the extended target’s energy is one of the important challenges of moving target detection in wideband radar. In this paper, a coherent integration method for wideband radar, i.e., variable-scale moving target detection (VSMTD), is proposed to resist range migration and Doppler broadening. On the one hand, subband decomposition can effectively integrate the energy of the extended target in range using variable-scale transformation, accomplished by modulating the filter bank. On the other hand, it increases the coherent integration time by mitigating the range migration in a sufficiently narrow subband. The discrete Fourier transform (DFT) modulated filter bank and the fast Fourier transform (FFT) algorithm are also used to achieve fast VSMTD implementation. Finally, the simulation results demonstrate the superior performance of the proposed VSMTD method. |
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| DOI: | 10.3390/rs14133156 |