Optimum absolute phase retrieval in three-element SAR interferometer

Author

Lombardini, F.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK

Volume

34

Issue

15

fYear

1998

fDate

7/23/1998 12:00:00 AM

Firstpage

1522

Lastpage

1524

Abstract

The author discusses absolute (in general, reduced-ambiguity) phase retrieval in a three-antenna synthetic aperture radar interferometer for topographic mapping. A model-based estimation technique is proposed, which produces optimal spatial processing of the data from the different baselines to obtain an accurate absolute phase (and hence terrain height) estimate. Simulated performance analysis is carried out, and comparison with conventional single-baseline interferometry and a non-model-based multibaseline technique is made

Keywords

antenna arrays; array signal processing; geophysical signal processing; phase estimation; radar altimetry; radar antennas; radar signal processing; radiowave interferometry; remote sensing by radar; synthetic aperture radar; topography (Earth); model-based estimation technique; optimal spatial processing; optimum absolute phase retrieval; performance analysis; reduced-ambiguity phase retrieval; terrain height; three-antenna synthetic aperture radar interferometer; three-element SAR interferometer; topographic mapping;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19981025

Filename

706264