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A Generic Electroma...
A Generic Electromagnetic Model for DOA Estimation using Arbitrary Multiport Antennas
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- Lundbäck, Jonas (författare)
- Växjö universitet,Matematiska och systemtekniska institutionen
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- Nordebo, Sven (författare)
- Växjö universitet,Matematiska och systemtekniska institutionen
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Gustafsson, Mats (författare)
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(creator_code:org_t)
- 2006
- 2006
- Engelska.
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Ingår i: IEEE International Symposium on Antennas and Propagation. ; , s. 2549-2552
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- A mathematical framework is introduced for optimization of antenna near-field imaging problems, based on the multipole expansion of the electromagnetic field, the Fisher information to quantify the quality of data and use of modern interior point convex optimization techniques. We consider the general problem of optimizing the measurement sensor allocation for parameter estimation in distributed systems, and in particular the problem of optimizing the measurement set-up for antenna near-field estimation. As an application example for antenna near-field imaging, we consider a relevant measurement set-up using cylindrical probing coordinates. The convex optimization problem is examined using duality theory, and it is shown that several structural properties of the optimal measurement problem can be exploited in developing an efficient interior point optimization method. In particular, we show that the cylindrical measurement set-up yields a Fisher information matrix with block diagonal structure, a feature which can be directly exploited in the optimization algorithm by reducing the number of dual decision variables.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- Inverse problems
- optimization
- Fisher information
- Mathematical physics
- Matematisk fysik
- Signal processing
- Signalbehandling
- Electrotechnology
- Elektroteknik alt Electrical engineering
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)