COHERENT PHASE COMPENSATION METHOD BASED ON DIRECT IF SAMPLING IN WIDEBAND RADAR
| Autor: | Qianqiang Lin, Yue Zhang, Jianzhi Lin, Zengping Chen |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Radiation
Wideband radar business.industry Scattering Computer science Condensed Matter Physics Doppler centroid Inverse synthetic aperture radar Optics Intermediate frequency Discrete cosine transform Coherence (signal processing) Phase compensation Electrical and Electronic Engineering business Algorithm |
| Zdroj: | Progress In Electromagnetics Research. 136:753-764 |
| ISSN: | 1559-8985 |
| Popis: | In order to eliminate the negative in∞uence of the rotational phase component (RPC) of target prominent scattering centres on the performance of Doppler centroid tracking (DCT) method, a coherent phase compensation method is proposed. The coherence of echo pulses sampled directly in intermediate frequency (IF) is flrstly analyzed and proved. Based on the coherence property, the proposed approach improves the translational phase component (TPC) estimation accuracy of DCT. Compared to the modifled Doppler centroid tracking (MDCT) algorithm, the proposed method achieves better phase compensation performance with simpler operations. Both the theoretical analysis and experimental results based on the real ISAR data prove the efiectiveness and e-ciency of the presented strategy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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