TY - GEN
T1 - Calibration factor estimation based on statistical modeling of scattering coefficient
AU - Sun, Zengguo
AU - Han, Chongzhao
AU - Narayanan, Ram M.
AU - Liu, Shigang
PY - 2009/11/18
Y1 - 2009/11/18
N2 - The calibration factors of synthetic aperture radar (SAR) images are generally obtained by estimation of radar system parameters based on internal calibration and external calibration. In this paper, we propose a simple but efficient method to estimate the calibration factors based on statistical modeling of scattering coefficient. Taking expectation and variance on the linear form of calibration equation, we derive the analytical expressions of such estimator. Modeling the scattering coefficient as Rayleigh, heavy-tailed Rayleigh, log-normal, and Weibull distributions, respectively, we obtain the calibration factor estimators for two kinds of radar receivers: the linear receiver and the square-law receiver. Lastly, Monte Carlo simulation results are provided to demonstrate the efficiency of the proposed calibration factor estimator.
AB - The calibration factors of synthetic aperture radar (SAR) images are generally obtained by estimation of radar system parameters based on internal calibration and external calibration. In this paper, we propose a simple but efficient method to estimate the calibration factors based on statistical modeling of scattering coefficient. Taking expectation and variance on the linear form of calibration equation, we derive the analytical expressions of such estimator. Modeling the scattering coefficient as Rayleigh, heavy-tailed Rayleigh, log-normal, and Weibull distributions, respectively, we obtain the calibration factor estimators for two kinds of radar receivers: the linear receiver and the square-law receiver. Lastly, Monte Carlo simulation results are provided to demonstrate the efficiency of the proposed calibration factor estimator.
UR - http://www.scopus.com/inward/record.url?scp=70449375285&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70449375285&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:70449375285
SN - 9780982443804
T3 - 2009 12th International Conference on Information Fusion, FUSION 2009
SP - 2006
EP - 2011
BT - 2009 12th International Conference on Information Fusion, FUSION 2009
T2 - 2009 12th International Conference on Information Fusion, FUSION 2009
Y2 - 6 July 2009 through 9 July 2009
ER -