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Depolarization of radar signals due to multiple scattering in rain
By: Oguchi, T.; Ito, S.; Meneghini, R.; Kumagai, H.; Iguchi, T.;
1995 / IEEE
This item was taken from the IEEE Periodical ' Depolarization of radar signals due to multiple scattering in rain ' The linear depolarization ratio (LDR) of radar returns from rain is studied. Pulse intensities of copolarized and cross polarized components are calculated by using the second-order solution of the time-dependent radiative transfer equation for a finite rain layer composed of spherical raindrops. Theoretical results show significant differences in LDR values between X and Ka bands for light to moderate rainfall rates and a rapid increase in the LDR reaching a level of about -8.5 dB at radar ranges near the rear edge of the rain layer. These characteristics of the LDR are in good agreement with observations from an air-borne dual-frequency, dual-polarized radar and suggest that a part of the depolarized radar power is caused by second-order multiple scattering effects.<
Remote Sensing By Radar
Mm Wave Millimetric
Radar Remote Sensing
Linear Depolarization Ratio
Time-dependent Radiative Transfer Equation
Finite Rain Layer
Ka-band Shf Microwave Ehf
Signal Processing And Analysis