A comparison of contrast metrics for contrast-based phase calibration of digital beamforming remote sensing systems

Conference paper (2006)

Authors

Paco López-Dekker Signal Theory and Comm. Dept., Mathematical Geodesy and Positioning - CEG , Universitat Politecnica de Catalunya
Gordon Farquharson University Corporation for Atmospheric Research
Stephen J. Frasier University of Massachusetts Amherst
Research Group
Mathematical Geodesy and Positioning (CEG) (TU Delft)
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Published Date

2006

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Geoscience and Remote Sensing

Research Group

Mathematical Geodesy and Positioning

Abstract

A contrast-based phase calibration algorithm for digital-beamforming radars using three contrast metrics is presented. The performance of the algorithm is studied using a combination of simulated and real radar data. We find that the entropy metric yields the smallest calibration vector, but that the M 3 metric appears more robust in low SNR conditions.