Communications: directive radio wave systems and devices (e.g. – Synthetic aperture radar
Reexamination Certificate
2007-01-02
2007-01-02
Sotomayor, John B. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Synthetic aperture radar
C342S188000, C342S02600R
Reexamination Certificate
active
10483188
ABSTRACT:
A method of using a bipolar radar to estimate a precipitation rate for rain that generates negligible attenuation. The method includes using the bipolar radar to measure the differential phase ΦDPand the apparent reflectivity Zeon at least one of horizontal polarization H and vertical polarization V over a given interval [r0, r1] of path radii relative to the radar. An estimate of the value No* representative of the dimensional distribution of rain drops is made on the basis of the differential phase difference in the range r0to r1and on the basis of an integral of a function of the apparent reflectivity Zealong the interval [r0, r1]. A value is deduced for the precipitation rate at a point from N0* and the apparent reflectivity at the point.
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Le Bouar Erwan
Testud Jacques
Centre National de la Recherche Scientifique "CNRS"
Jacobson & Holman PLLC
Sotomayor John B.
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