title: Multigigahertz range-Doppler correlative signal processing in optical memory crystals.
abstract: Analog optical signal processing of complex radio-frequency signals for range-Doppler radar information is theoretically described and experimentally demonstrated using crystalline optical memory materials and off-the-shelf photonic components. A model of the range-Doppler processing capability of the memory material for the case of single-target detection is presented. Radarlike signals were emulated and processed by the memory material; they consisted of broadband (> 1 GHz), spread-spectrum, pseudorandom noise sequences of 512 bits in length, which were binary phase-shift keyed on a 1.9 GHz carrier and repeated at 100 kHz over 7.5 ms. Delay (range) resolution of 8 ns and Doppler resolution of 130 Hz over 100 kHz were demonstrated.
authors.affiliation: Spectrum Laboratory, Box 173510, Montana State University, Bozeman, Montana 59717-3510, USA. todd.harris@sri.com
authors.forename: Todd L
authors.initials: TL
authors.lastname: Harris
authors.forename: Kristian D
authors.initials: KD
authors.lastname: Merkel
authors.forename: R Krishna
authors.initials: RK
authors.lastname: Mohan
authors.forename: Tiejun
authors.initials: T
authors.lastname: Chang
authors.forename: Zachary
authors.initials: Z
authors.lastname: Cole
authors.forename: Andy
authors.initials: A
authors.lastname: Olson
authors.forename: Wm Randall
authors.initials: WR
authors.lastname: Babbitt