DocumentCode
2879552
Title
Costas arrays and the Lovász Local Lemma
Author
Correll, Bill ; Swanson, Christopher N. ; Ho, Randy W.
Author_Institution
MDA Inf. Syst. LLC, Ypsilanti, MI, USA
fYear
2015
fDate
10-15 May 2015
Abstract
We propose a fundamentally new approach to studying the existence of Costas arrays. We explore the consequences of applying new formulations of the Lovász Local Lemma in an effort to apply the probabilistic method to show that Costas arrays of a given order n must exist. Our applications of the Lovász Local Lemma make use of a characterization of all O(n6) configurations of ones within a permutation matrix whose existence violates the definition of a Costas array. We show that this approach can at least be used to establish the existence of arrays of orders 3 - 5 and also can be applied to prove the existence of frequency-hopping waveforms of all orders satisfying many subsets of at least n(n - 1)(n - 2)2 - 2 of the violating constraints.
Keywords
matrix algebra; spread spectrum radar; Costas array; Loveasz Local Lemma; frequency hopping waveform; permutation matrix; probabilistic method; Doppler shift; Linear matrix inequalities; MATLAB; Object detection; Optimization; Probabilistic logic; Time-frequency analysis;
fLanguage
English
Publisher
ieee
Conference_Titel
Radar Conference (RadarCon), 2015 IEEE
Conference_Location
Arlington, VA
Print_ISBN
978-1-4799-8231-8
Type
conf
DOI
10.1109/RADAR.2015.7130993
Filename
7130993
Link To Document