Communications: directive radio wave systems and devices (e.g. – With particular circuit – With polarization
Patent
1988-09-07
1990-05-22
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
With polarization
342159, G01S 1350
Patent
active
049281313
ABSTRACT:
A sea clutter suppression radar is capable of effectively suppressing the reflected signal using RF waves of a single frequency by simultaneously sending the RF waves each having horizontal and vertical polarizations, and detecting, from a reflected signal from a target, horizontally and vertically polarized components and the vector sum and the vector difference signals between these components, and then processing these signals to suppress the reflected signal from the sea surface. The radar includes at least one antenna for simultaneously sending horizontally and vertically polarized RF waves, first and second detectors each for detecting intermediate frequency signals or horizontally and vertically polarized components of reflected RF waves, third and fourth detectors each for detecting IF signals of the vector sum and vector difference between the horizontally and vertically polarized components and a polar signal generator for generating a polar signal based upon the difference between the addition of both outputs of the first and second detectors, and the absolute value of the difference between said both outputs and the difference between the outputs of the third and fourth detectors.
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"Studies Concerning the Improvement of the Signal-to-Clutter Ratio of Radar-Detected Ship Targets", by Specker, 1985, XI.sup.th Conference of International Association of Lighthouse Authorities.
Oki Electric Industry Co.
Sotomayor John B.
Tarcza Thomas H.
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