Repeat-track SAS interferometry : feasibility study

Author

Bellec, R. ; Legris, M. ; Khenchaf, A. ; Amate, M. ; Hetet, A.

Author_Institution

Laboratoire E3I2 EA3876, Ecole Nationale Supérieure des Ingénieurs, des Etudes et Techniques de l’Armement 2, rue François Verny, 29806 Brest Cedex 9, France, Email: bellecro@ensieta.fr

fYear

2005

fDate

2005

Firstpage

1

Lastpage

7

Abstract

Repeat track interferometry is a commonly used technology in Radar. It permits to obtain topography and elevation variation of ground. This technology is not used with sonar system, even though this configuration could provide interesting applications for underwater environnement knowledge. This paper presents a study on repeat-track interferometry feasibility with sonar system, and especially for synthetic aperture sonar (SAS). We shortly expose the SAS and interferometry principle in the first part. Then we present the multi-track interferometry and discuss on limitation. In a third part, experimental results based on data acquired with the experimental low frequency SAS (LFSAS) of GESMA (France), are detailed and we expose methods to circumvent problems induced by repeat-track interferometry. Finally we discuss on future strategies to improve the encouraging results we obtained.

Keywords

Frequency; Interferometry; Radar antennas; Radar tracking; Reflector antennas; Signal resolution; Signal synthesis; Surfaces; Synthetic aperture radar; Synthetic aperture sonar;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS, 2005. Proceedings of MTS/IEEE

Print_ISBN

0-933957-34-3

Type

conf

DOI

10.1109/OCEANS.2005.1640090

Filename

1640090