Elliptical grid generation for sped-up back-projection on bistatic SAR with ground based stationary receiver

In this paper, an efficient routine for elliptical grid generation employed for the back-projection sped-up is proposed. The grid accommodates the particular bistatic setup formed by a space-born transmitter (Sentinel-l) and a ground-based stationary receiver (COBIS). Herein, the adapted elliptical...

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Bibliographic Details
Main Authors: Focsa, Adrian, Anghel, Andrei, Datcu, Mihai
Format: Conference Proceeding
Language:English
Subjects:
bistatic SAR
Computational complexity
Doppler effect
elliptical grid
fast back projection (FBP)
Geoscience and remote sensing
Imaging
Radar polarimetry
Receivers
Transmitters
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Summary:In this paper, an efficient routine for elliptical grid generation employed for the back-projection sped-up is proposed. The grid accommodates the particular bistatic setup formed by a space-born transmitter (Sentinel-l) and a ground-based stationary receiver (COBIS). Herein, the adapted elliptical grid is designed such that the computational complexity of the standard back-projection algorithm used for SAR image formation decreases. Specifically, the computational load is mitigated by reducing the density of the points in the cross-range direction. Such an elliptical grid leads to the formation of the SAR image in any arbitrary plane, preserving the range-azimuth (cross-range) spectrum of the final SAR image, making it suitable for further Doppler processing algorithms (e.g., common band selection in SAR interferometry).
ISSN:2153-7003
DOI:10.1109/IGARSS52108.2023.10282479