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Efficient Simulation of hybrid stripmap/spotlight SAR raw signals from extended scenes

Guida, R, Franceschetti, G, Iodice, A, Riccio, D and Ruello, G (2004) Efficient Simulation of hybrid stripmap/spotlight SAR raw signals from extended scenes IEEE Transactions on Geoscience and Remote Sensing, 42 (11). pp. 2385-2396.

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Abstract

The hybrid stripmap/spotlight mode for a synthetic aperture radar (SAR) system is able to generate microwave images with an azimuth resolution better than the one achieved in the stripmap mode and a ground coverage better than the one of the spotlight mode. In this paper, time- and frequency-domain-based procedures to simulate the raw signal in the hybrid stripmap/spotlight mode are presented and compared. We show that a two-dimensional Fourier domain approach, although highly desirable for its efficiency, is not viable. Accordingly, we propose a one-dimensional (1-D) range Fourier domain approach, followed by 1-D azimuth time-domain integration. This method is much more efficient than the time-domain one, so that extended scenes can be considered. In addition, it involves approximations usually acceptable in actual cases. Effectiveness of the simulation scheme is assessed by using numerical examples.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Surrey Space Centre
Authors :
AuthorsEmailORCID
Guida, RUNSPECIFIEDUNSPECIFIED
Franceschetti, GUNSPECIFIEDUNSPECIFIED
Iodice, AUNSPECIFIEDUNSPECIFIED
Riccio, DUNSPECIFIEDUNSPECIFIED
Ruello, GUNSPECIFIEDUNSPECIFIED
Date : November 2004
Identification Number : 10.1109/TGRS.2004.834763
Additional Information : © 2004 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Depositing User : Symplectic Elements
Date Deposited : 18 Jul 2013 12:49
Last Modified : 23 Sep 2013 19:27
URI: http://epubs.surrey.ac.uk/id/eprint/533275

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