Analysis and Design Optimization of Robust Aperiodic Micro-UAV Swarm-Based Antenna Arrays

Micro-UAV swarm-based antenna arrays provide a novel solution for high-risk radar imaging applications. These apertures lack a single point of failure by distributing their resources and sensors across multiple platforms. However, turbulence and positional errors provide a challenging operational en...

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Vydáno v:	IEEE transactions on antennas and propagation Ročník 60; číslo 5; s. 2295 - 2308
Hlavní autoři:	Namin, F., Petko, J. S., Werner, D. H.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	New York, NY IEEE 01.05.2012 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:	Aerodynamics Aircraft Antenna arrays Antenna radiation patterns Antennas Aperiodic arrays aperiodic tilings Apertures Applied sciences Arrays Compensation error correction algorithm Exact sciences and technology Fluid dynamics Fluid flow genetic algorithms Gratings micro-UAV swarms Optimization polyfractal array Radiocommunications Radiolocalization and radionavigation Software Telecommunications Telecommunications and information theory Turbulence Turbulent flow Vectors wideband arrays Lateral lobe High resolution Error estimation Broadband antennas Implementation Optimization Phase compensation wideband arrays Unmanned aerial vehicle Radar imaging Radiation pattern Antenna array Sparse array Turbulence micro-UAV swarms Measurement sensor Radar applications genetic algorithms Failures polyfractal array Genetic algorithm Aperiodic arrays aperiodic tilings Error correction error correction algorithm Aircraft
ISSN:	0018-926X, 1558-2221
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Popis
Shrnutí:	Micro-UAV swarm-based antenna arrays provide a novel solution for high-risk radar imaging applications. These apertures lack a single point of failure by distributing their resources and sensors across multiple platforms. However, turbulence and positional errors provide a challenging operational environment when it comes to the implementation of these systems. Turbulence can limit the aperture's ability to coherently resolve a target and cause aircrafts to collide in midair if the formation is too tightly packed with closely spaced elements. This paper introduces several techniques that can reduce the effects of turbulence on the system. First, a phase compensation algorithm is presented that can eliminate the effects of turbulence on the main beam of the array. In addition, sparse antenna apertures can be used to create flight formations that reduce the probability of midair collisions. Traditional periodic apertures are insufficient because these arrays display grating lobes at wide interelement spacings. Therefore, two aperiodic array optimization methodologies are discussed that produce sparse array configurations suitable for micro-UAV formations. These sparse arrays exhibit low peak side-lobe levels without the presence of grating lobes over wide interelement spacings. By combining phase compensation with optimized sparse aircraft formations, one can achieve high radiation pattern resolution in a micro-UAV based radar imaging application.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 ObjectType-Article-2 ObjectType-Feature-1 content type line 23
ISSN:	0018-926X 1558-2221
DOI:	10.1109/TAP.2012.2189715