Surface-mounted acoustic vector-sensor array processing

We consider the passive direction-of-arrival (DOA) estimation problem using arrays of acoustic vector-sensors located in a fluid, at or near a plane boundary. We formulate a general measurement model applicable to most surfaces, and derive an expression for the Cramer-Rao bound (CRB) of a single sou...

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Vydáno v:1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings Ročník 6; s. 3169 - 3172 vol. 6
Hlavní autoři: Hawkes, M., Nehorai, A.
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 1996
Témata:
Acoustic measurements
Acoustic sensors
Array signal processing
Direction of arrival estimation
Pressure measurement
Sea measurements
Sea surface
Sensor arrays
Sonar
Velocity measurement
ISBN:9780780331921, 0780331923
ISSN:1520-6149
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Shrnutí:We consider the passive direction-of-arrival (DOA) estimation problem using arrays of acoustic vector-sensors located in a fluid, at or near a plane boundary. We formulate a general measurement model applicable to most surfaces, and derive an expression for the Cramer-Rao bound (CRB) of a single source. The CRB is used to analyze the practically important cases of ideal rigid and pressure-release surfaces in detail. An important quantitative comparison is made between a stand-off array of pressure sensors and a surface-mounted array of velocity sensors for the latter surface. In particular, we define and find an expression for the critical distance, at which the arrays have an equivalent performance.
ISBN:9780780331921
0780331923
ISSN:1520-6149
DOI:10.1109/ICASSP.1996.550549