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 …

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

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 spatio-temporal operator formalism and beam propagation simulations that
describe the broadband efficient adaptive method for a true-time-delay array processing …

The utilization of three dimensions of parallelism in photorefractive data processors is
extended to parallel three-dimensional readout for the two radar scenarios of radar doppler …

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 …

Results of a program to investigate the properties of a phase-conjugation adaptive array
driven by independent laser oscillators are described. Data are presented for a five-channel …

This paper reports on the continuation of work on photorefractive correlation and tapped
delay line structures for the implementation of adaptive signal processors. A six channel …