The philosophy and method used to develop the antenna pattern correction (APC) algorithm that was used on the data from the Scanning Multichannel Microwave Radiometer (SMMR) on Nimbus-7 are discussed. There are limitations on what can be accomplished with such a procedure, and these limitations are explored with the aid of Fourier analysis, even though the algorithm used on the SMMR data does not perform any Fourier transforms. The resulting analysis shows that, for the SMMR instrument, no useful improvement could be made in the data in terms of reduction of sidelobes; however, the quality of the sea surface temperature retrievals could be improved considerably by matching the antenna beamwidths at the different frequencies.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Antenna pattern correction for the Nimbus-7 SMMR


    Additional title:

    Richtdiagrammkorrektur fuer das Mehrkanal-Mikrowellen-Radiometer von Nimbus-7


    Contributors:

    Published in:

    Publication date :

    1986


    Size :

    8 Seiten, 17 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    Interim Calibration Report for the SMMR Simulator

    P. Gloersen / D. Cavalieri | NTIS | 1979


    Antenna Drive System for the Nimbus Satellite

    G. J. Wedlake / J. D. Loudon | NTRS | 1971


    SMMR simulator radiative transfer calibration model. 1: Derivation

    Calhoon, C. D. / Link, S. / Doyle, M. et al. | NTRS | 1979


    Nimbus-7

    Foreman, M. / Pashby, P. | NTRS | 1991