Abstract
In this work, we examine how to reliably exploit baseline diversity of a multichannel interferometric SAR system to overcome the layover problem. The problem arises when different height contributions collapse in the same range-azimuth resolution cell, due to the presence of strong terrain slopes or discontinuities in the sensed scene. Several multilook approaches have recently been suggested to counter act the presence of speckle, exploiting a repeated uniform spatial sampling of the baseline. In practice, the baseline steering vectors will generally be imprecise, resulting in array miscalibration. Herein, we propose a non-parametric multilook approach based on robust Capon beamforming, allowing for uncertainty in the steering vectors
| Original language | English |
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| Title of host publication | Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology |
| Publisher | IEEE - Institute of Electrical and Electronics Engineers Inc. |
| Pages | 328-331 |
| ISBN (Print) | 0 7803 8292 7 |
| Publication status | Published - 2003 |
| Externally published | Yes |
| Event | Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology - Darmstadt Duration: 2003 Dec 14 → 2003 Dec 17 |
Conference
| Conference | Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology |
|---|---|
| Period | 2003/12/14 → 2003/12/17 |
Subject classification (UKÄ)
- Probability Theory and Statistics
Free keywords
- image resolution
- image sampling
- radar imaging
- radar resolution
- radiowave interferometry
- synthetic aperture radar
- multibaseline INSAR - synthetic aperture radar - multichannel interferometric SAR system - range-azimuth resolution cell - strong terrain slopes - array miscalibration - nonparametric multilook approach - robust Capon beamforming - steering vectors