The present disclosure relates to a dual-polarized phased array antenna and a dual-polarized phased array weather radar. According to the dual-polarized phased array antenna, a plurality of dual-polarized row feeds are arranged on a horizontal cylindrical support surface to form a dual-polarized antenna in a horizontal cylindrical shape. This allows two polarized signals in a horizontal direction and a vertical direction to be simultaneously received and transmitted, and ensures digital multi-beam signals with constant beam bandwidth, antenna gain, and dual polarization performance. The dual-polarized phased array weather radar provided in the present disclosure uses the formed dual-polarized microstrip patch antenna or a dual-polarized waveguide slot antenna in the horizontal cylindrical shape. This can ensure consistency of weather detected at different scan angles, and improve the accuracy of weather target 3D construction. In addition, this can simplify the calibration requirement of an existing phased array weather radar.

A system and method is provided in which a single-pole-double-throw switch controls whether a circular loop transmits a right-hand circular polarized signal or a left-hand circular polarized signal. The single-pole-double-throw switch is shielded from the circular loop by a metallic ground plane. An annulus of dielectric insulates the circular loop from the metallic ground plane.

The invention relates to a method for object classification which comprises the following steps for providing an elliptically or circularly polarized transmission signal which is transmitted to the object to be classified: generating a first radar image from the copolarly polarized reflection signal and generating a second radar image from the cross-polarized reflection signal and comparing the first radar image with the second radar image.

An electromagnetic wave medical imaging system, the system including: at least one antenna; transmission electronics; receiving electronics; and receiving computing electronics, where the transmission electronics are structured to transmit a first electromagnetic wave having an Orbital Angular Momentum wave-front thru the antenna towards a target, where the transmission electronics are structured to transmit a second electromagnetic wave having a non Orbital Angular Momentum wave-front thru a first portion of the antenna towards the target, where the receiving electronics are structured to form a first signal from a first return wave of the first electromagnetic wave, where the receiving electronics are structured to form a second signal from a second return wave of the second electromagnetic wave, and where the system is designed to operate at a near field electromagnetic wave. Included are methods for operating a super resolution system.

A microwave and millimeter wave imaging system. In either a far-field or a near-field detection mode, a radially-polarized probe transmits an imaging signal along a predetermined scan path to detect a target in a sample. The imaging signal's orientation is independent of the target's orientation and changes at each target as the probe transmits the signal during scanning. A measurement system receives scattered waves reflected from the sample via a single channel and images the sample and the target based on the reflected waves independent of the orientation of the target.

Systems and methods for sensing the surroundings of vehicles via vehicle mounted radar sensors. A directional transmitter array transmits radiation into the region surrounding the vehicle and a receiver array receives the radiation reflected back. Controllers may use self-velocity calculation modules, wall detection modules, dynamic range enhancement modules, double reflection detection modules and the like to harvest useful information such as the vehicles relative speed and the identification of hazards in its surroundings.

A vehicle-assistance system for classifying objects in a vehicle's surroundings. The system includes: at least one memory configured to store classification information for classifying a plurality of objects; and at least one processor configured to receive a plurality of detection results associated with light detection and ranging system (LIDAR) detection results, each detection result including location information, and further information indicative of at least two of the following detection characteristics: object surface reflectivity; temporal spreading of signal reflected from the object; object surface physical composition; ambient illumination measured at a LIDAR dead time; difference in detection information from a previous frame; and confidence level associated with another detection characteristic. The at least one processor is also configured to: access the classification information; and based on the classification information and the detection results, classify an object in the vehicle's surroundings.

The invention describes a radar system consisting of a plurality of subcomponents each individually having all components of a radar device which comprise at least transmitters, receivers, a mixer and a phase locked loop, wherein an individual phase code is generated for each transmitter; and transmitters and receivers of all subcomponents of the radar system together provide a virtual overall arrangement according to the Multiple Input Multiple Output method, wherein at least one virtual sub-arrangement of the overall arrangement, provided by a combination of transmitters of a subcomponent and receivers of a subcomponent, has at least one overlapping column or one overlapping row with another virtual sub-arrangement of the overall arrangement, wherein the at least other virtual sub-arrangement is provided by another combination of transmitters of a subcomponent and receivers of a subcomponent.

An electromagnetic wave medical imaging system, the system including: at least one antenna; transmission electronics; receiving electronics; and receiving computing electronics, where the transmission electronics are structured to transmit a first electromagnetic wave having an Orbital Angular Momentum wave-front thru the antenna towards a target, where the transmission electronics are structured to transmit a second electromagnetic wave having a non Orbital Angular Momentum wave-front thru a first portion of the antenna towards the target, where the receiving electronics are structured to form a first signal from a first return wave of the first electromagnetic wave, where the receiving electronics are structured to form a second signal from a second return wave of the second electromagnetic wave, and where the system is designed to operate at a near field electromagnetic wave. Included are methods for operating a super resolution system.

An antenna apparatus includes an aperture antenna. The antenna apparatus also includes a compact polarimetric monopulse waveguide antenna feed configured to communicate with the aperture antenna. Optionally, the compact polarimetric monopulse waveguide antenna feed includes a monopulse antenna feed configured to communicate with the aperture antenna. The compact polarimetric monopulse waveguide antenna feed also includes a compact polarimetric monopulse feed network configured to communicate with the monopulse antenna feed.