The University of Oklahoma

University Corporation for Atmospheric Research

Richard J Doviak

Guifu Zhang

Robert Dean Palmer

Dusan S Zrnic

Jothiram Vivekanandan

Dusan S Zmic

A method of collecting data using a polarimetric phased array antenna is described. The method includes directing electromagnetic signals to selected panels of an array of panels so as to transmit a dual H and V polarized electromagnetic beam (1) having the same beam width in all azimuth directions and (2) maintaining cross-polarization isolation via orthogonal dual-polarizations in all beam pointing directions. The panels include antennas having a horizontally (H) polarized array element and a vertically (V) polarized array element arranged to form two orthogonally polarized horizontal and vertical radiating fields which together form the dual H and V polarized electromagnetic beam. The array of panels is arranged so as to form a substantially cylindrical configuration on a support system. Reflection signals sensed by the selected panels formed by scattering of said dual H and V polarized electromagnetic beam are received and have a reflection frequency spectrum.

Cylindrical polarimetric phased array radar

A radar data acquisition system including a polarimetric phased array antenna and a radar control and processing system. The polarimetric phased array antenna includes a support system, an array of panels and a switching network. One or more of the panels include a dual pole antenna for at least one of transmitting and receiving a dual polarization electromagnetic beam. The switching network communicates with the panels such that at least one of power, radar and control signals are sent to and received from one or more selected panels. The radar control and processing system communicates with the switching network for forming electromagnetic signals directed to one or more selected panels such that the selected panels form a dual polarization electromagnetic beam, and for reading signals sensed by one or more selected panels and for decoding the signals into an electronic radar output.

A velocity determination system determines a three dimensional velocity of an object wherein the three dimensional velocity comprises a radial velocity and a transverse velocity. A velocity determination system receives a first signal from the object. The velocity determination system then receives a second signal from the object. The velocity determination system then correlates the first signal and the second signal. The velocity determination system determines the radial velocity based on a ratio of the correlation of the first signal and the second signal. The velocity determination system then determines a transverse velocity based on a ratio of the correlation of the first signal and the second signal in a forward mode and a backward mode along a transverse direction.

Growing community of inventors

Norman, OK, United States of America

Richard J Doviak