Correction for quadrature errors

A. Netterstrøm, Erik Lintz Christensen

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    Abstract

    In high bandwidth radar systems it is necessary to use quadrature devices to convert the signal to/from baseband. Practical problems make it difficult to implement a perfect quadrature system. Channel imbalance and quadrature phase errors in the transmitter and the receiver result in error signals, which appear as self-clutter in the radar image. When digital techniques are used for generation and processing or the radar signal it is possible to reduce these error signals. In the paper the quadrature devices are analyzed, and two different error compensation methods are considered. The practical implementation in the Danish polarimetric SAR system, EMISAR, is presented, and measured results are given.
    Original languageEnglish
    Title of host publicationProceedings of the International Geoscience and Remote Sensing Symposium : Surface and Atmospheric Remote Sensing: Technologies, Data Analysis and Interpretation
    VolumeVolume 2
    PublisherIEEE
    Publication date1994
    Pages909-911
    ISBN (Print)07-80-31497-2
    DOIs
    Publication statusPublished - 1994
    Event1994 International Geoscience and Remote Sensing Symposium: Surface and Atmospheric Remote Sensing: Technologies, Data Analysis and Interpretation - Pasadena, CA, United Arab Emirates
    Duration: 8 Aug 199412 Aug 1994

    Conference

    Conference1994 International Geoscience and Remote Sensing Symposium
    CountryUnited Arab Emirates
    CityPasadena, CA
    Period08/08/199412/08/1994

    Bibliographical note

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