Use of interferometric SAR for height measurement and discrimination

Lawrence P. Orwig; Paul M. Ibsen; Harold D. Maney Jr.; James D. O'Brien; Hugh D. Holt Jr.

doi:10.1117/12.177190

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9 June 1994 Use of interferometric SAR for height measurement and discrimination

Lawrence P. Orwig; Paul M. Ibsen; Harold D. Maney Jr.; James D. O'Brien; Hugh D. Holt Jr.

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Proceedings Volume 2230, Algorithms for Synthetic Aperture Radar Imagery; (1994) https://doi.org/10.1117/12.177190
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

During an ARPA/Army topographic mapping study, it was shown that interferometric synthetic aperture radar elevation data (IFSARE) can distinguish trees and artificial structures such as buildings and towers from open areas on the basis of height. This result suggests the use of thresholded heights or height-based edge detection as a potential tool for image segmentation in an ATR system. With somewhat more height resolution and accuracy than was available during this study, one may also contemplate height- based change detection as a means of finding mobile targets. This paper describes the radar and navigation systems used for the study. It then summarizes the main algorithm steps used for motion compensation, geopositioning and interferometric phase unwrapping, starting from range compressed data. Sample imagery and related results are shown. Data from preliminary tests of an improved navigation system, intended ultimately to allow automated coregistration of overlapping images, are summarized.

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Lawrence P. Orwig, Paul M. Ibsen, Harold D. Maney Jr., James D. O'Brien, and Hugh D. Holt Jr. "Use of interferometric SAR for height measurement and discrimination", Proc. SPIE 2230, Algorithms for Synthetic Aperture Radar Imagery, (9 June 1994); https://doi.org/10.1117/12.177190

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KEYWORDS

Radar

Synthetic aperture radar

Antennas

Buildings

Navigation systems

Interferometers

Phase interferometry

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