Two-dimensional filter bank design for velocity estimation in Forward Scatter Radar configuration
| Autor: | S. Rainaldi, Nertjana Ustalli, Debora Pastina, Carlo Bongioanni, F. Di Lello, Pierfrancesco Lombardo |
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| Rok vydání: | 2017 |
| Předmět: |
instrumentation
computer networks and communications 020301 aerospace & aeronautics electrical and electronic engineering Radon transform Computer science Matched filter astronomy and astrophysics 020206 networking & telecommunications computer science applications1707 computer vision and pattern recognition 02 engineering and technology Filter bank Synthetic data law.invention 0203 mechanical engineering law 0202 electrical engineering electronic engineering information engineering Electronic engineering Spectrogram signal processing Radar Focus (optics) Algorithm Impulse response |
| Zdroj: | 2017 18th International Radar Symposium (IRS). |
| DOI: | 10.23919/irs.2017.8008188 |
| Popis: | The focus of this paper is on the estimation of the velocity of moving targets with a Forward Scatter Radar system. To this aim a two-dimensional filter bank is proposed with the generic filter impulse response depending on the target electrical size and on the target trajectory that are a priori unknown. In order to limit the computational load required by the bank for practical applications, a two-step processing is proposed: in the first step a rough estimate of the target cross-baseline velocity component is obtained by applying the Radon transform to the spectrogram of the acquired signal while in the second step the bank is exploited to refine the velocity estimation provided by the previous step and also to provide a rough estimation of the target electrical size. The performance of the proposed approach is analyzed against synthetic data under different case studies such as different motion directions, baseline crossing points and different target dimensions. Finally results obtained by applying the proposed processing to FM-based passive FSR experimental data are shown demonstrating the effectiveness of the considered approach. |
| Databáze: | OpenAIRE |
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