Blind high resolution localization and tracking of multiple frequency hopped signals

Author

Liu, Xiangqian ; Sidiropoulos, Nicholas D. ; Swami, Ananthram

Author_Institution

Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA

Volume

2

fYear

2001

fDate

4-7 Nov. 2001

Firstpage

1089

Abstract

This paper considers the problem of blind localization and tracking of multiple frequency-hopped spread-spectrum (FHSS) signals using an antenna array, without knowledge of hopping patterns. We first identify a hop free subset of data by discarding high-entropy spectral slices from the spectrogram, then perform low-rank decomposition of four-way data generated by capitalizing on both spatial and temporal shift invariance for high resolution direction of arrival (DOA) recovery. After MMSE beamforming, a dynamic programming approach is developed for joint ML estimation of signal frequencies and hopping instants for signal user tracking.

Keywords

array signal processing; direction-of-arrival estimation; dynamic programming; frequency hop communication; least mean squares methods; linear antenna arrays; maximum likelihood estimation; radio tracking; signal resolution; spread spectrum communication; FHSS signals; MMSE beamforming; ULA; antenna array; blind high resolution localization; blind high resolution tracking; direction of arrival recovery; dynamic programming; frequency-hopped spread spectrum; high-entropy spectral slices; hop free data subset; hopping instants; joint ML estimation; low-rank decomposition; multiple frequency hopped signals; signal frequencies; signal user tracking; spatial shift invariance; spectrogram; temporal shift invariance; uniform linear array; Antenna arrays; Array signal processing; Direction of arrival estimation; Dynamic programming; Frequency estimation; Multifrequency antennas; Signal resolution; Spatial resolution; Spectrogram; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2001. Conference Record of the Thirty-Fifth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-7147-X

Type

conf

DOI

10.1109/ACSSC.2001.987661

Filename

987661