Title :
A study on the resolution limit of polarimetric radar and the performance of polarimetric bandwidth extrapolation technique
Author :
Suwa, Kei ; Wakayama, Toshio ; Iwamoto, Masafumi
Abstract :
Statistical resolution limit (SRL) is a simple metric that provides the highest resolution achievable by any unbiased para metric spectral estimator. In this paper, the SRL of polarimetric radar is derived and compared with that of single polarization radar. The SRL is defined using the Cramer-Rao bound (CRB) of signal parameters for the cases where two point targets are closely located. It is shown analytically and numerically that the polarization information helps improving the SRL.
Keywords :
extrapolation; radar polarimetry; radar resolution; radar signal processing; synthetic aperture radar; CRB; Cramer-Rao bound; POLSAR; SRL; polarimetric bandwidth extrapolation technique; polarimetric synthetic aperture radar; polarization information; signal parameter; single polarization radar; statistical resolution limit; unbiased parametric spectral estimator; Extrapolation; Measurement; Radar polarimetry; Signal resolution; Signal to noise ratio; Source separation; Cramér-Rao bound; Fisher information; Polarimetry; average CRB; multichannel signal; parametric spectral analysis; polarization; resolution; statistical resolution limit; super-resolution;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4577-1003-2
DOI :
10.1109/IGARSS.2011.6050066
