A radar system includes a transmit front end device including a transmit planar component, and a receive front end device including a receive planar component. Each of the transmit planar component and the receive planar component includes a first end, a second end, a cavity space and a linear array of antennas. The cavity space is bounded by beam ports along a first side of the cavity space and by array ports along a second side of the cavity space. The cavity space is in operative communication with the beam ports and with the array ports to form a Rotman lens. A linear array of antennas is located along the second end of the planar component. The transmit planar component and receive planar component are arranged such that the linear array of antennas of the transmit planar component and the linear array of antennas are perpendicular to one another.

Apparatus and associated methods relate to detecting cloud conditions from a distance by generating a polarized microwave-frequency electromagnetic pulse and evaluating various reflected wave parameters pertaining to a corresponding cloud-reflected microwave-frequency electromagnetic reflection. Various cloud metrics can be calculated using these collected wave parameters. The microwave-frequency pulses can be scanned over multiple dimensions, using a steered beam arrangement which will lead to the ability to scanning a conical sector of the space in front of the aircraft. These collected multi-dimensional wave parameters can then be used to generate multi-dimensional maps of cloud metrics. Such cloud metrics can include relative velocities of moving cloud conditions in the flight direction, particle density distributions, ice/water ratios, estimates of particle side distributions, etc.

The present invention is directed to an antenna system and a method that is configured to compute calibration element voltage gain patterns as functions of a digital antenna model and a plurality of complex beamformer voltages, determine calibration through path transfer functions from the plurality of complex voltages, and remove the calibration element voltage gain patterns from the calibration through path transfer functions to determine a beamforming network transfer function. The beamforming network transfer function and the far-field element voltage gain patterns are combined to obtain a system transfer function used to revise a calibration table.

Provided is a phased array transmission device including: a plurality of transmission branches, each being provided with a phase shift unit that applies a phase rotation to a baseband signal, a DC offset correction unit that adds a first correction value to an output signal of the phase shift unit, and a mixer that subjects an output signal of the DC offset correction unit to a frequency conversion to a high frequency band; and a correction control unit that calculates a second correction value with which a carrier leak component included in an output signal of the mixer is minimized, for each of a plurality of candidates for a phase rotation amount that is set for the phase rotation, and determines the first correction value on the basis of the second correction value.

Described embodiments provide techniques for controlling a phased array system by a control system including one or more distributed control stations. At least one of the control stations displays a control interface having a status window, a beam window, and a scan window. The control system instructs the phased array system to operate in an operating mode selected from among selectable operating modes displayed in the status window. In the beam window, at least one beam is selected from among selectable beams available to track a target. The control system instructs the phased array system to form the selected beam and assigns the formed beam to (i) track a target detected by the phased array system, or (ii) monitor a selected location. The scan window displays (i) targets tracked by the phased array system, and (ii) beams generated by the phased array system.

A personal area radar is provided to permit a user to be aware of their surroundings. This may be in 360 degrees or any other suitable coverage area and angle. The personal area radar can show objects to the user through fog, smoke, precipitation, darkness and with full 360 degree field of view capability, significantly improving the user's overall situational awareness. They may also be used to view things that are behind solid objects such as in or behind walls or underground. These systems may be highly integrated phased array radar systems mounted on a helmet. They may use small, high frequency radars able to detect solid objects (and/or semi-solid objects) such as people, improvised explosive devices (IED), or other solid objects. These methods and systems may provide the user with 360 degrees view and awareness of objects regardless of external conditions such as weather, darkness or other obstructions.

An airborne redirection unit (ARU), for deflecting an RF energy beam, the ARU comprising: A canopy comprising a surface for slowing the rate of descent, A beam director supported at the canopy, the ARU being configured to focus the RF energy beam.

A process and systems for constructing arbitrarily large virtual arrays using two or more collection platforms (e.g. AUX and MOV systems) having differing velocity vectors. Referred to as Motion Extended Array Synthesis (MXAS), the resultant imaging system is comprised of the collection of baselines that are created between the two collection systems as a function of time. Because of the unequal velocity vectors, the process yields a continuum of baselines over some range, which constitutes an offset imaging system (OIS) in that the baselines engendered are similar to those for a real aperture of the same size as that swept out by the relative motion, but which are offset by some (potentially very large) distance.

A system and method for a multi-panel multi-function active electronically scanned array (AESA) radar operation receives radar commands from individual aircraft systems and segments a plurality of AESA panels fixed (at variable azimuth/elevation about the aircraft) into a plurality of subarrays to carry out each individual function commanded by the individual aircraft system. Dependent on aircraft status and phase of flight, the and individual AESA are designated for use and the subarrays are sized based on desired radar function at the specific phase of flight and specific threat associated with the phase. The system dynamically shifts the designated AESA, subarray size, beam characteristics, power settings, and function to enable multiple simultaneous function of the suite of AESA panels.

A system and method for a multi-beam multi-function active electronically scanned array (AESA) radar operation receives radar commands from individual aircraft systems and segments a single AESA fixed panel into a plurality of subarrays to carry out each individual function commanded by the individual aircraft system. Dependent on aircraft status and phase of flight, the subarrays are sized based on desired radar function at the specific phase of flight and specific threat associated with the phase. The system dynamically shifts the subarray size, beam characteristics, power settings, and function to enable multiple function of a cost effective single AESA panel.