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DOA Estimation for Arbitrary Four-Sensor Array Configurations based on Three-Dimensional Sound Intensity Measurement |
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PP: 899-905 |
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Author(s) |
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Jie Shi,
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Abstract |
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| Vector sound intensity probe can be used to determine the DOA of a sound source by measuring the three orthogonal
components of the sound-intensity vector. Typical vector sound intensity probes are composed of six or four sensors with symmetric
structures. Such probes, in our opinion, are still not convenient for engineering implementation. A four-sensor vector sound intensity
probe with arbitrary configurations is proposed here. The flexible structure of this probe allows it easily fix in any platform. In this
paper, the direction finding algorithm based on this four-sensor probe is investigated first, then the error in direction estimates caused
by instrument systematic error in sound intensity measurements are analyzed theoretically. Last, simulation experiments are conducted
for testing the performance of DOA estimation based on this probe. |
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