A high resolution polarimetric L-band SAR-design and first results

Niels Skou, Johan Granholm, Kim Woelders, J Rohde, Jørgen Dall, Erik Lintz Christensen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    252 Downloads (Pure)


    An L-band polarimetric SAR system has been developed as part of the dual frequency (L- and C-band), polarimetric, airborne EMISAR system. The SAR features a unique combination of fine resolution (2×2 m) and wide swath (9.3 km). The transmitter power is 6 kW. From a flight altitude of 41,000 ft the range of the radar is 64 km with a noise equivalent sigma naught of -20 dB. The antenna is a stacked microstrip patch array with the feed structure on the back side of the antenna panel to reduce unwanted radiation. The cross polar level is below -35 dB. The polarization switch is a relatively conventional PIN diode switch matrix able to sustain the 6 kW peak power from the transmitter still exhibiting low loss (0.3 dB) and high isolation (more than 50 dB). Thus system cross talk (between polarizations) is dominated by antenna cross talk and is some -35 dB. Polarimetric imagery has been acquired over the EMISAR calibration scene: An agricultural site in Denmark featuring a range of different fields and forested areas as well as several trihedrals and dihedrals. Based on the imagery data, sensor performance is assessed. The L- & C-band polarimetric EMISAR instrument is one of the key sensors in the JRC EARSEC initiative aiming at supplying state-of-the-art remote sensing data to European scientists
    Original languageEnglish
    Title of host publicationProceedings of the International Geoscience and Remote Sensing Symposium : Quantitative Remote Sensing for Science and Applications
    VolumeVolume 3
    Publication date1995
    ISBN (Print)07-80-32567-2
    Publication statusPublished - 1995
    Event1995 International Geoscience and Remote Sensing Symposium: Quantitative Remote Sensing for Science and Applications - Firenze, Italy
    Duration: 10 Jul 199514 Jul 1995


    Conference1995 International Geoscience and Remote Sensing Symposium
    Internet address

    Bibliographical note

    Copyright: 1995 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

    Cite this