Abstract
Based on deep study of conventional range-Doppler (R-D) algorithm in synthetic aperture sonar, an improved R-D algorithm applied to squint looking and side looking by abandoning the Fresnel assumption is derived. Secondary range compressing is avoided and imaging effect is improved remarkably in squint-looking use. The steps in the algorithm are expressed only by Doppler center and Doppler rate, which can naturally realize motion compensation combined with auto-focusing steps. At last it is concluded that the modified algorithm is effective by squint-looking SAS simulation.
Original language | English |
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Pages (from-to) | 351-356 |
Number of pages | 6 |
Journal | Shengxue Xuebao/Acta Acustica |
Volume | 28 |
Issue number | 4 |
Publication status | Published - Jul 2003 |
Externally published | Yes |