SABRINA: A SAR bistatic receiver for interferometric applications

Jesus Sanz-Marcos*, Paco Lopez-Dekker, Jordi J. Mallorqui, Albert Aguasca, Pau Prats

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

104 Citations (Scopus)

Abstract

This letter discusses the implementation of SABRINA, Synthetic Aperture radar Bistatic Receiver for Interferometric Applications. The ground resolution of a fixed-receiver bistatic system is studied, showing that it is comparable to that of a monostatic system. Due to the short distance from target to receiver, large sensitivity is obtained. The noncooperative nature of the bistatic system forces a conservative data-acquisition strategy based on continuously sampling the scattered signal during a temporal window around the predicted satellite overpass time. Also, to be able to synchronize the system in time and in frequency, sampling of a direct signal obtained through an antenna pointed at the satellite is required. Besides the signal processing required to phase-lock the received signal, the bistatic synthetic aperture radar processing needs to take into account the azimuth-dependent phase history. First focused images obtained with the SABRINA-ENVISAT combination are discussed.

Original languageEnglish
Pages (from-to)307-311
Number of pages5
JournalIEEE Geoscience and Remote Sensing Letters
Volume4
Issue number2
DOIs
Publication statusPublished - Apr 2007

Keywords

  • Bistatic synthetic aperture radar
  • Interferometry
  • Sensor of opportunity
  • Synthetic aperture radar (SAR)

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