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Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

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Optimization of receiver arrangements for passive emitter localization methods.

M Flückiger¹, A Neild, B J Nelson

¹Institute of Robotics and Intelligent Systems, ETH Zurich, 8092 Zürich, Switzerland. michael.flueckiger@alumni.ethz.ch

|November 25, 2011

Summary

This study proposes optimal receiver positions for passive object localization, enhancing accuracy and resolution in sensor arrays. The method improves emitter location estimates using time or phase measurements, particularly for ultrasound signals.

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Area of Science:

Acoustics
Signal Processing
Array Signal Processing

Background:

Passive localization relies on time difference of arrival (TDOA) or phase shift measurements.
Localization accuracy is dependent on precise time/phase measurements.
Emitter localization resolution is influenced by signal frequency and receiver configuration.

Purpose of the Study:

To propose optimal receiver positions for passive localization methods.
To achieve maximal resolution in emitter location estimation.
To analyze signal uncertainty, including frequency, for optimization.

Main Methods:

Developed an optimization technique for receiver positions in sensor arrays.
Analyzed signal uncertainty, considering emission frequency.
Focused on passive localization using ultrasound signals from omnidirectional transducers.

Main Results:

Identified optimal receiver arrangements for enhanced passive localization.
Maximal resolution in emitter location estimates was achieved.
The proposed technique demonstrated effectiveness for ultrasound applications.

Conclusions:

Optimal receiver placement significantly improves passive localization accuracy and resolution.
The developed method provides a framework for enhancing emitter location estimation.
Applicable to various passive localization techniques beyond ultrasound.