We have augmented the NASA DC-8 Airborne Synthetic Aperture Radar (AIRSAR) instrument with a pair of C-band antennas displaced across the track to form an interferometer sensitive to topographic variations of the Earth's surface. The antennas were developed by Alenia Spazio under the sponsorship of the Italian Space Agency (ASI), and the AIRSAR instrument and modifications to it supporting TOPSAR were sponsored by NASA. A new data processor was developed at JPL for producing the topographic maps. As of May 1991, one engineering flight line over San Francisco, CA was reduced to a cartographically rectified topographic map. Analysis of the results indicates that statistical errors are in the range of 2 to 4 m, while systematic effects due to aircraft motion are in the range of 6 to 12 m. Future aircraft motion compensation algorithms should reduce the systematic variations to near zero, while the statistical errors could likely be reduced to 2 m or less with some processor improvements.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    TOPSAR Interferometric Radar Topographic Mapping Instrument


    Beteiligte:
    H. A. Zebker (Autor:in)

    Erscheinungsdatum :

    1991


    Format / Umfang :

    4 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    TOPSAR Interferometric Radar Topographic Mapping Instrument

    H. A. Zebker / S. N. Madsen / J. Martin et al. | NTIS | 1992


    The TOPSAR interferometric radar topographic mapping instrument

    Zebker, Howard A. / Madsen, Soren N. / Martin, Jan et al. | NTRS | 1992



    The NASA/JPl Aircraft Topographic Synthetic Aperture Radar (TOPSAR)

    Thompson, Thomas W. / Zebker, Howard A. / Carande, Richard E. et al. | NTRS | 1995


    The JPL Aircraft Topographic Synthetic Aperture Radar (TOPSAR) Program

    Thompson, T. / Zebker, H. / Carande, R. et al. | NTRS | 1994