(57) ABSTRACT A digital beamforming synthetic aperture radar (SAR) mixes a first analog
signal to generate a frequency-shifted first signal having a first spectral band, mixes a …

(57) ABSTRACT A radar system for tracking UAVs and other low flying objects utilizing
wireless networking equipment is provided. The system is implemented as a distributed low …

A synthetic aperture radar (SAR) is operable in an interro gation mode and in a self-imaging
mode, the self-imaging mode entered in response to determining a response to interrogation …

There is a growing realisation that, similar to the concern about abuse of the atmosphere
causing Global Warming, that the Electromagnet (EM) Spectrum is rapidly filling up, with …

(57) ABSTRACT A planar phased array antenna assembly includes a first face sheet with a
first plurality of radiating slots for a first frequency band and a second plurality of radiating …

This paper deals with a symbiotic radar, defined as a passive radar that is an integral part of
a communication network. The symbiotic radar is integrated with an IEEE 802.22 Wireless …

An indirect passive radar method and system utilizing information obtained from a non-direct
source and reflected signals from an object to be identified to determine information …

(57) ABSTRACT A synthetic aperture radar (SAR) is operable in an interro gation mode and
in an imaging mode, the imaging mode entered in response to determining a response to …

(57) ABSTRACT A synthetic aperture radar (SAR) system generates an image of a first
swath. The SAR includes at least one SAR antenna, at least one SAR processor and at least …

A wireless multimode system includes: an array of N antenna elements that includes a first
portion of M antenna elements and a second portion of L antenna elements; M transmission …