An unconstrained, adaptive, null-steering phased-array optical processor that utilizes a
photorefractive crystal to time-integrate the adaptive weights, and null out correlated …

An adaptive null-steering phased-array optical processor that utilizes a photorefractive
crystal to time integrate the adaptive weights and null out correlated jammers is described …

We are developing a class of optical phased-array-radar processors which use the large
number of degrees-of-freedom available in 3D photorefractive volume holograms to time …

We describe a photorefractive phased array radar processor which directs its look angle to
the signal of interest and puts nulls in the array function at the locations of jammers. We …

We present an approach to receive-mode broadband beam forming and jammer nulling for
large adaptive antenna arrays as well as its efficient and compact optical implementation …

We present a novel and efficient approach to true-time-delay (TTD) beamforming for large
adaptive phased arrays with N elements, for application in radar, sonar, and communication …

Three new optical signal processing techniques for adaptive phased array radar (APAR)
signal processing are described. The coherent optical correlator uses acousto-optic …

Recent work on optical signal distribution and control techniques for phased-array radar is
described. Experimental results for millimeter-wave reference signal generation by …

Laser systems using coherent optical heterodyne detection of signals have recently become
interesting for a variety of applications including imaging, communications …

We introduce a new optical approach to the problem of implementing true-time-delay (TDD)
beamforming for a large N-element adaptive array that requires only 2 tapped delay lines …