Name
Title | ||
|---|---|---|
Reduction of vibration-induced artifacts in synthetic-aperture-radar imagery using the fractional fourier transform |
Abstract | ||
|---|---|---|
In synthetic aperture radar (SAR) images of objects exhibiting low-level vibrations are accompanied by localized artifacts, or ghost targets, caused by the micro-Doppler present in the returned SAR signals. Conventional Fourier-transform-based SAR processing techniques are not fit to remove ghosting effects prior to image formation due to the non-stationary nature of the returned signals from vibrating objects. Recently, a method based on the discrete fractional Fourier transform (DFrFT) has been developed for estimating the instantaneous vibration accelerations and vibrating frequencies from returned SAR signals. Here, a novel image de-ghosting algorithm for vibrating targets in SAR imagery is proposed by employing the DFrFT-based vibration-estimation algorithm. The proposed de-ghosting method is applied to SAR data collected by the Lynx SAR system. Experimental results show a substantial reduction in ghosting caused by a 1.5-cm amplitude, 0.8-Hz vibration present in a test target. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/ICIP.2012.6467450 | ICIP |
Keywords | Field | DocType |
sar processing techniques,synthetic aperture radar,sar imagery,instantaneous vibration accelerations,dfrft-based vibration-estimation algorithm,synthetic-aperture-radar imagery,image de-ghosting algorithm,vibrations,lynx sar system,image de-noising,synthetic aperture radar images,returned sar signals,low-level vibrations,discrete fourier transforms,vibrating target,vibrating targets,sar signals,ghost target,frequency 0.8 hz,vibrating frequencies,localized artifacts,vibrating objects,vibration-induced artifacts reduction,image formation,radar imaging,discrete fractional fourier transform,microdoppler present,fractional fourier transform | Computer vision,Radar imaging,Computer science,Synthetic aperture radar,Inverse synthetic aperture radar,Image formation,Artificial intelligence,Vibration,Test target,Fractional Fourier transform,Ghosting | Conference |
ISSN | ISBN | Citations |
1522-4880 E-ISBN : 978-1-4673-2532-5 | 978-1-4673-2532-5 | 1 |
PageRank | References | Authors |
0.38 | 3 | 8 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Qi Wang | 1 | 27 | 3.18 |
| Matthew Pepin | 2 | 27 | 2.84 |
| Ralf Dunkel | 3 | 28 | 3.53 |
| Tom Atwood | 4 | 27 | 3.18 |
| Armin W. Doerry | 5 | 27 | 2.84 |
| Balu Santhanam | 6 | 58 | 9.74 |
| Walter Gerstle | 7 | 32 | 3.85 |
| Majeed M. Hayat | 8 | 213 | 26.36 |