Abstract
The article presents a spotlight SAR imaging algorithm for large scenes. Based on the classical chirp scaling algorithm, the algorithm divides the datum into several sub-apertures to image. Squinted equivalent range model is used. Range scaling is combined with range compression. Rational scaling factor is selected to remove the difference of sub-apertures. Phase compensatory factor is amended to make azimuth time outstanding. After azimuth compression, the sub-apertures are arrayed and synthesized to offer a full-aperture resolution image. Validity of the algorithm is testified by computer simulations.
| Original language | English |
|---|---|
| Pages (from-to) | 349-352 |
| Number of pages | 4 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 26 |
| Issue number | 4 |
| Publication status | Published - Apr 2006 |
Keywords
- Scaling factor
- Spotlight
- Sub-aperture
- Synthetic aperture radar