Title
Correction of the effects induced by the continuous motion in airborne FMCW SAR
Author
Meta, A.
Hoogeboom, P.
Ligthart, L.P.
Publication year
2006
Abstract
The combination of Frequency Modulated Continuous Wave (FMCW) technology and Synthetic Aperture Radar (SAR) leads to lightweight, cost-effective imaging sensors of high resolution. In FMCW SAR applications the conventional stop-and-go approximation used in pulse radar algorithms can be not valid anymore, therefore the motion within the sweep needs to be taken into account. Analytical development of the FMCW SAR signal model, starting from the deramped signal and without using the stop-and-go approximation, is presented in this paper. The model is then applied to spotlight and single transmitter/multiple receiver Digital Beam Forming (DBF) operational mode, where the effect of the motion during the transmission and reception of the pulse, if not compensated for, can become seriously degrading for the SAR image quality. The derivation is then verified by processing real FMCW SAR data collected with the demonstrator system built at the Delft University of Technology. © 2006 IEEE.
Subject
Radar
Approximation theory
Cost effectiveness
Frequency modulation
Image sensors
Mathematical models
Synthetic aperture radar
Deramped signal
Digital Beam Forming (DBF)
Frequency Modulated Continuous Wave (FMCW)
Single transmitter/multiple receiver
Motion estimation
To reference this document use:
http://resolver.tudelft.nl/uuid:8a77fac6-ffd4-405e-a0f3-fdb55d5da172
TNO identifier
223792
Publisher
IEEE, Piscataway, NJ
Source
2006 IEEE Radar Conference, April 24-27, 2006, Verona, NY, USA, 358-365
Document type
conference paper