NDLI: Blind multipath separation for waveform recovery

Content Provider	IEEE Xplore Digital Library
Author	Fabrizio, G. Farina, A.
Copyright Year	2010
Description	Author affiliation: Intelligence, Surveillance and Reconnaissance Division, Defence Science and Technology Organization, Edinburgh, SA, 5111, Australia (Fabrizio, G.) \|\| Analysis of Integrated Systems Unit Selex Sistemi Integrati (SELEX-SI) Via Tiburtina, 12.4 km, Rome, Italy (Farina, A.)
Abstract	The separation of multipath signal components by spatial filtering in a narrowband antenna array is addressed for cases where diffuse scattering and array calibration errors may cause the spatial signatures of the received propagation modes to deviate significantly from the plane-wave array manifold. The distorted wavefronts may have complex spatial signatures that are difficult to accurately characterize and mutually resolve on the basis of array manifold models described by few parameters. Furthermore, the temporal signature of the source waveform may also be quite arbitrary, with no known deterministic or statistical properties that can be utilized for multipath separation. This problem calls for blind waveform estimation methods that rely on relatively mild assumptions. An alternative blind spatial filtering technique referred to as the Generalized Estimation of Multipath Signals algorithm, or GEMS, is introduced for this purpose and tested on experimental data provided by the high frequency (HF) radar program of the Defence Science and Technology Organization (DSTO), Australia.
Starting Page	563
Ending Page	568
File Size	990869
Page Count	6
File Format	PDF
ISBN	9781424458110
ISSN	10975659
e-ISBN	9781424458127
DOI	10.1109/RADAR.2010.5494558
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna arrays Filtering Frequency estimation Narrowband Receiving antennas Antenna accessories Antennas and propagation Radar scattering Calibration Spatial resolution
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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