Polarization radar method and system
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorPaul Van Etten
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Abstract
A polarization radar method and system employs polarization discrimination to obtain target-to-clutter enhancement. The polarization of the radar is rotated at very fast rates. The polarization is rotated at least 360.degree. during one pulse and discrimination is obtained with a single pulse operation. In the system, the receiver is tuned to a frequency that was not radiated by the radar's transmitting antenna.
Claims8
A polarization radar modulation system being comprised of means to generate a pulse waveform, means to rotate the polarization of said pulse waveform at a very fast and constant angular rate, said polarization rotation rate being at least 360.degree. during one pulse, first antenna means to direct the rotated pulse waveform toward a target of interest for reflection therefrom, second antenna means to receive the energy of the reflected signal, said received energy having the same polarization as the transmitted polarization and both rotating at a constant linear rate, a receiver connected to said second antenna means, said received signals containing frequency components other than transmitted and said receiver being tuned thereto to obtain target discrimination.
Dependencies are inferred from the claim text.