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2006-05-20

Experimental Anechoic Chamber Measurements of a Target Near an Interface

By Nicolas Marquart
Progress In Electromagnetics Research, Vol. 61, 143-158, 2006
doi:10.2528/PIER06031003

Abstract

Abstract-The backscattered field of an illuminated sphere with diameter Ø = 30.5 cm above a perfect conducting plate is measured in an anechoic chamber at different heights for a varying incidence angle φ in the range 5° to 75°. A high frequency field λ « Ø is transmitted, so that two significant transitions from lit to shadow regions are given over the entire incidence angle range for the considered ray field. The polarimetric behavior of the measured scattering matrix [S] is investigated by using the common coherent and incoherent decomposition theorems used by the radar polarimetry scientific community. Close to the shadow boundaries the polarimetric behavior of the sphere significantly changes. Representing the different decomposition parameters used in radar polarimetry over the incidence angle range, the transition zones are related to local maxima or minima. Hence, the extreme values of the polarimetric parameters give information about the geometrical parameters e.g target size and its height above the plate.

Citation


Nicolas Marquart, "Experimental Anechoic Chamber Measurements of a Target Near an Interface," Progress In Electromagnetics Research, Vol. 61, 143-158, 2006.
doi:10.2528/PIER06031003
http://www.jpier.org/PIER/pier.php?paper=0603103

References


    1. Marquart, N. P., "Investigation on the polarimetric behavior of the em-field scattered by an ob ject located near the interface between the air and a lossy dielectric half-space," Univ. of Rennes 1, 2006.

    2. Marquart, N. P. and F. Molinet, "Polarimetric properties of an ob ject in front of the air-ground interface," Journal of Electromagnetic Waves and Applications, 2006.

    3. Wiesbeck, W. and D. K ̈ahny, "Single reference, three target calibration and error correction for monostatic, polarimetric free space measurements," Proceedings of the IEEE, Vol. 79, No. 10, 1551-1558, 1991.
    doi:10.1109/5.104229

    4. Krogager, E., "Aspects of polarimetric radar imaging," Danish Defence Research Establishment, 1993.

    5. Graves, "C. Radar polarization power matrix," Proceeding of the IRE, Vol. 44, No. 2, 248-252, 1956.

    6. Huynen, J. R., "Phenomenological theory of radar targets," Technical University Delft, 1970.

    7. Cloude, S. and E. Pottier, "A review of target decomposition theorems in radar polarimetry," IEEE Transactions on Geoscience and Remote Sensing, Vol. 34, No. 3, 498-518, 1996.
    doi:10.1109/36.485127

    8. Cloude, S. and E. Pottier, "An entropy based classification scheme for land applications of polarimetric SAR," IEEE Transactions on Geoscience and Remote Sensing, Vol. 35, No. 1, 68-78, 1997.
    doi:10.1109/36.551935