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Proceedings Paper

Concept for low-cost chaos radar using coherent reception
Author(s): Jonathan N. Blakely; Ned J. Corron
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Paper Abstract

We describe a new approach to random-signal radar based on the recent discovery of analytically solvable chaotic oscillators. These surprising nonlinear systems generate random, aperiodic waveforms that offer an exact analytic representation, allowing the implementation of simple matched filters and coherent reception. Notably, this approach enables nearly optimal detection of noise-like waveforms without need for expensive variable delay lines to store wideband waveforms for correlation. Mathematically, the waveform is expressed as a linear convolution of a bit sequence with a fixed basis function. We realize a simple matched filter for the waveform using a linear filter whose impulse response function is the time reverse of the basis function. Importantly, linear filters matched to finite bit sequences can be defined, enabling pulse compression and spread spectrum radar. We present an example oscillator, its matched filter, and simulation results demonstrating the pulse compression radar concept.

Paper Details

Date Published: 21 June 2011
PDF: 7 pages
Proc. SPIE 8021, Radar Sensor Technology XV, 80211H (21 June 2011); doi: 10.1117/12.884688
Show Author Affiliations
Jonathan N. Blakely, U. S. Army Aviation and Missile Research, Development, and Engineering Ctr. (United States)
Ned J. Corron, U. S. Army Aviation and Missile Research, Development, and Engineering Ctr. (United States)

Published in SPIE Proceedings Vol. 8021:
Radar Sensor Technology XV
Kenneth I. Ranney; Armin W. Doerry, Editor(s)

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