Analysis of multistatic configurations for spaceborne SAR interferometry

Krieger G, Fiedler H, Mittermayer J, Papathanassiou KP, Moreira A (2003)

Publication Type: Journal article

Publication year: 2003

Journal

IEE P-RADAR SON NAV The Institution of Electrical Engineers

Edited Volumes: IEE Proceedings: Radar, Sonar and Navigation

Book Volume: 150

Pages Range: 87-96

Journal Issue: 3

URI: https://elib.dlr.de/6143/

DOI: 10.1049/ip-rsn:20030441

Abstract

Spaceborne bistatic and multistatic SAR configurations are an attractive approach to acquire along-track and cross-track interferograms on a global scale. An efficient realisation of such systems may be achieved by a set of low-cost, passive receivers onboard a constellation of microsatellites which simultaneously record the backscattered signals transmitted by a conventional spaceborne radar. The authors introduce several multistatic SAR configurations suitable for global single-pass interferometry and discuss their advantages and limitations. The achievable interferometric performance is analysed in detail, taking into account thermal noise, block adaptive quantisation, range and azimuth ambiguities, and geometric decorrelation for both surface and random volume scatterers. Based on the estimated interferometric phase errors, the relative height accuracies for three illuminators (PALSAR, ASAR, TerraSAR-X) are derived. The achievable height accuracies are of the order of 2 m for PALSAR and ASAR, and of the order of 1 m for TerraSAR-X. However, it turns out that for vegetated areas, volume decorrelation may become a limiting factor for configurations with large interferometric baselines. These restrictions can be overcome by making the interferometric configuration fully polarimetric and/or increasing the number of available baselines.

Authors with CRIS profile

Gerhard Krieger

Additional Organisation(s)

Professur für Kognitive Radarsysteme für die Fernerkundung

Involved external institutions

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center DE Germany (DE)

How to cite

APA:

Krieger, G., Fiedler, H., Mittermayer, J., Papathanassiou, K.P., & Moreira, A. (2003). Analysis of multistatic configurations for spaceborne SAR interferometry. IEE P-RADAR SON NAV , 150(3), 87-96. https://doi.org/10.1049/ip-rsn:20030441

MLA:

Krieger, Gerhard, et al. "Analysis of multistatic configurations for spaceborne SAR interferometry." IEE P-RADAR SON NAV 150.3 (2003): 87-96.

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