3-D radar imaging using range migration techniques

An imaging system with three-dimensional (3-D) capability can be implemented by using a stepped frequency radar which synthesizes a two-dimensional (2-D) planar aperture. A 3-D image can be formed by coherently integrating the backscatter data over the measured frequency band and the two spatial coo...

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Published in:IEEE transactions on antennas and propagation 2000-05, Vol.48 (5), p.728-737
Main Authors: Lopez-Sanchez, J.M., Fortuny-Guasch, J.
Format: Article
Language:English
Subjects:
Algorithms
Backscatter
Computational complexity
Coordinate measuring machines
Frequency measurement
Frequency synthesizers
High-resolution imaging
Image sampling
Imaging
Mathematical models
Migration
Radar imaging
Sampling
Stepped
Synthetic aperture radar
Two dimensional displays
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Fortuny-Guasch, J.
description An imaging system with three-dimensional (3-D) capability can be implemented by using a stepped frequency radar which synthesizes a two-dimensional (2-D) planar aperture. A 3-D image can be formed by coherently integrating the backscatter data over the measured frequency band and the two spatial coordinates of the 2-D synthetic aperture. This paper presents a near-field 3-D synthetic aperture radar (SAR) imaging algorithm. This algorithm is an extension of the 2-D range migration algorithm (RMA). The presented formulation is justified by using the method of the stationary phase (MSP). Implementation aspects including the sampling criteria, resolutions, and computational complexity are assessed. The high computational efficiency and accurate image reconstruction of the algorithm are demonstrated both with numerical simulations and measurements using an outdoor linear SAR system.
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subjects Algorithms
Backscatter
Computational complexity
Coordinate measuring machines
Frequency measurement
Frequency synthesizers
High-resolution imaging
Image sampling
Imaging
Mathematical models
Migration
Radar imaging
Sampling
Stepped
Synthetic aperture radar
Two dimensional displays
title 3-D radar imaging using range migration techniques
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