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- Title
一种正前视宽扇区高分辨雷达扫描成像方法.
- Authors
蒋运辉
- Abstract
Synthetic aperture radar(SAR) can process out high resolution SAR images by illuminating the interesting imaging area on the left or right side of the flight direction only, while the right forward-looking area in front of the flight direction is the inherent blind area of SAR imaging. Three-channel(sum, azimuth error, elevation error) millimeter-wave monopulse imaging radar can implement 2-dimensional(2D) imaging on the right forward looking scene and get monopulse images. An image matching and merging method is proposed for SAR and monopulse images. First, feature extraction on SAR and monopulse images is implemented by using multi-scale and multi-direction 2D Gabor filter banks. Then, normalized cross correlation(NCC) matching is used on the two groups of characteristic matrix and pixel mergence on the matched images is taken, so the completely right forward looking and wide sector high resolution radar image is obtained. The imaging results of the experiment data show that the proposed compound imaging method can implement high resolution imaging on the right forward looking and wide sector area of the flight direction. It has effectively resolved the blind area problem of right-forward high-resolution imaging in the engineering practice. It has some practical significance of engineering in forward-looking radar imaging reconnaissance, target area image matching of missile-borne radar, night flight and blind landing of aircraft, etc.
- Subjects
HIGH resolution imaging; SYNTHETIC aperture radar; MONOPULSE radar; FILTER banks; CROSS correlation; PIXELS
- Publication
Telecommunication Engineering, 2019, Vol 59, Issue 12, p1411
- ISSN
1001-893X
- Publication type
Article
- DOI
10.3969/j.issn.1001-893x.2019.12.007