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Source Localization in the Presence of Model Uncertainties
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- Viberg, Mats (author)
- Linköpings universitet,Reglerteknik,Tekniska högskolan,Dep. of Electrical Engineering SE-581 83 Linköpings Universitet Sweden
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- Ottersten, Björn, 1961- (author)
- KTH,Signaler, sensorer och system,Royal Institute of Technology, Sweden
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- Wahlberg, Bo (author)
- KTH,Reglerteknik,Royal Institute of Technology, Sweden
- (creator_code:org_t)
- 1992
- 1992
- English.
- In: Proceedings of the 2nd Workshop on Adaptive Algorithms in Communications.
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- In many signal processing applications high accuracy signal parameter estimation from sensor array data is a significant problem. Much of the recent work in array processing has focused on methods for high-resolution location estimation. Model based estimation techniques requre accurate knowledge of the so-called array manifold. In practise, the array response is often determined by measuring the array response when only one emitter is radiating and the signal parameters of which are allowed to vary in a known way. This paper addresses some of the practical issues that arise in generating the so-called array manifold from a finite collection of caibration vectors. For high-resolution signal parameter estimation techniques to be successful, the interpolated array manifold has to satisfy certain smoothness conditions. A paradigm for generating an array model from noise corrupted calibration vectors is developed. The key idea is to use a local parametric model of the sensor responses. The potential improvement using the suggested scheme rather than an ideal array model is demonstrated on real data collected from a full-scale hydro-acoustic array.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Keyword
- Signal processing
- Parameter estimation
- Sensor array data
- Calibration vectors
- Interpolation
- TECHNOLOGY
- TEKNIKVETENSKAP
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- ref (subject category)
- kon (subject category)
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