Application of blind signal separation techniques to Airborne Antenna Arrays.

Airborne antenna arrays su}er from the problem of multipath\ formed due to scattering of the desired signal by the aircraft propellers[ The direct path includes the desired signal coming from a sonobuoy ~oating in the ocean or from other airborne radars\ and their re~ections from the ocean surface[ Numerous techniques have been proposed for multipath mitigation and localization of the desired signal\ that assume the propeller scatters to be point sources\ which is not true in actual scenarios[ Also\ the multipath from the ocean that accompanies the direct signal\ leads to a complicated spatial signature\ making existing techniques unsuitable[ In this paper\ we propose a new technique which deals with the propeller scatters as spatially extended sources\ and also takes into account the signal re~ections from the ocean[ The problem is presented as that of blind signal separation[ The objective is two!fold\ localization of the desired signal and extraction of its waveform[ The Second order Blind Identi_cation "SOBI# algorithm is applied to obtain the spatial signatures of the desired signal and the multipath\ which are then used to obtain both the temporal and spatial characteristics of the signals[ An e.cient method for recovering the desired waveform is also formulated[

Main Author: Bhalla, Nitin.
Other Authors: Belouchrani, Adel., Amin, Moeness G.
Language: English
Published: 1999
Online Access: http://ezproxy.villanova.edu/login?url=https://digital.library.villanova.edu/Item/vudl:173150
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dc_source_str_mv Journal of Franklin Institute, January 1999.
author Bhalla, Nitin.
author_facet_str_mv Bhalla, Nitin.
Belouchrani, Adel.
Amin, Moeness G.
author_or_contributor_facet_str_mv Bhalla, Nitin.
Belouchrani, Adel.
Amin, Moeness G.
author_s Bhalla, Nitin.
spellingShingle Bhalla, Nitin.
Application of blind signal separation techniques to Airborne Antenna Arrays.
author-letter Bhalla, Nitin.
author_sort_str Bhalla, Nitin.
author2 Belouchrani, Adel.
Amin, Moeness G.
author2Str Belouchrani, Adel.
Amin, Moeness G.
dc_title_str Application of blind signal separation techniques to Airborne Antenna Arrays.
title Application of blind signal separation techniques to Airborne Antenna Arrays.
title_short Application of blind signal separation techniques to Airborne Antenna Arrays.
title_full Application of blind signal separation techniques to Airborne Antenna Arrays.
title_fullStr Application of blind signal separation techniques to Airborne Antenna Arrays.
title_full_unstemmed Application of blind signal separation techniques to Airborne Antenna Arrays.
collection_title_sort_str application of blind signal separation techniques to airborne antenna arrays.
title_sort application of blind signal separation techniques to airborne antenna arrays.
description Airborne antenna arrays su}er from the problem of multipath\ formed due to scattering of the desired signal by the aircraft propellers[ The direct path includes the desired signal coming from a sonobuoy ~oating in the ocean or from other airborne radars\ and their re~ections from the ocean surface[ Numerous techniques have been proposed for multipath mitigation and localization of the desired signal\ that assume the propeller scatters to be point sources\ which is not true in actual scenarios[ Also\ the multipath from the ocean that accompanies the direct signal\ leads to a complicated spatial signature\ making existing techniques unsuitable[ In this paper\ we propose a new technique which deals with the propeller scatters as spatially extended sources\ and also takes into account the signal re~ections from the ocean[ The problem is presented as that of blind signal separation[ The objective is two!fold\ localization of the desired signal and extraction of its waveform[ The Second order Blind Identi_cation "SOBI# algorithm is applied to obtain the spatial signatures of the desired signal and the multipath\ which are then used to obtain both the temporal and spatial characteristics of the signals[ An e.cient method for recovering the desired waveform is also formulated[
publishDate 1999
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dc_date_str 1999
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fgs.label Application of blind signal separation techniques to Airborne Antenna Arrays.
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dc.title Application of blind signal separation techniques to Airborne Antenna Arrays.
dc.creator Bhalla, Nitin.
Belouchrani, Adel.
Amin, Moeness G.
dc.description Airborne antenna arrays su}er from the problem of multipath\ formed due to scattering of the desired signal by the aircraft propellers[ The direct path includes the desired signal coming from a sonobuoy ~oating in the ocean or from other airborne radars\ and their re~ections from the ocean surface[ Numerous techniques have been proposed for multipath mitigation and localization of the desired signal\ that assume the propeller scatters to be point sources\ which is not true in actual scenarios[ Also\ the multipath from the ocean that accompanies the direct signal\ leads to a complicated spatial signature\ making existing techniques unsuitable[ In this paper\ we propose a new technique which deals with the propeller scatters as spatially extended sources\ and also takes into account the signal re~ections from the ocean[ The problem is presented as that of blind signal separation[ The objective is two!fold\ localization of the desired signal and extraction of its waveform[ The Second order Blind Identi_cation "SOBI# algorithm is applied to obtain the spatial signatures of the desired signal and the multipath\ which are then used to obtain both the temporal and spatial characteristics of the signals[ An e.cient method for recovering the desired waveform is also formulated[
dc.date 1999
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dc.source Journal of Franklin Institute, January 1999.
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