Sensitivity of back‐projection algorithm (BPA) synthetic aperture radar (SAR) image formation to initial position, velocity, and attitude navigation errors
| Autor: | Jacob H. Gunther, Randall Christensen, Colton Lindstrom, Scott Jenkins |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Synthetic aperture radar
Image formation Computer science business.industry ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION TK5101-6720 back projection algorithm inertial navigation Position (vector) Computer Science::Computer Vision and Pattern Recognition Telecommunication Computer vision Artificial intelligence Sensitivity (control systems) Electrical and Electronic Engineering business Back projection synthetic aperture radar |
| Zdroj: | IET Radar, Sonar & Navigation, Vol 16, Iss 2, Pp 364-378 (2022) |
| ISSN: | 1751-8784 1751-8792 |
| Popis: | The Back‐Projection Algorithm (BPA) is a time‐domain‐matched filtering technique to form synthetic aperture radar (SAR) images. To produce high‐quality BPA images, precise navigation data for the radar platform must be known. Errors in position, velocity, or attitude result in improperly formed images that are corrupted by shifting and blurring. The contribution of this paper is the development of analytical expressions that characterise the relationship between navigation errors and image formation errors from an inertial navigation point of view, where trajectory estimation errors in position, velocity, and attitude propagate through time and cause compounding errors in the vehicle state vector. These analytical expressions are verified via simulated image formation and real‐data image formation. |
| Databáze: | OpenAIRE |
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