By Chiong Ching Lai, Sven Erik Nordholm, Yee Hong Leung
The ebook covers the layout formulations for broadband beamformer concentrating on nearfield and farfield assets. The booklet content material contains historical past info at the acoustic surroundings, together with propagation medium, the array geometries, sign versions and uncomplicated beamformer designs. thus it introduces layout formula for nearfield, farfield and combined nearfield-farfield beamformers and extends the layout formula into electronically steerable beamformers. furthermore, a strong formula is brought for all of the designs mentioned.
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Additional info for A Study into the Design of Steerable Microphone Arrays
Dmochowski, J. Benesty, S. Affes, On spatial aliasing in microphone arrays. IEEE Trans. Signal Process. 57(4), 1383–1395 (2009) 15. A. Manikas, A. Alexiou, H. Karimi, Comparison of the ultimate direction-finding capabilities of a number of planar array geometries, in Proceedings of the IEE Radar, Sonar and Navigation, vol. 144, no. 6, Dec 1997, pp. 321–329 16. A. Sleiman, A. Manikas, The impact of sensor positioning on the array manifold. IEEE Trans. Antennas Propag. 51(9), 2227–2237 (2003) 17.
Hacker, H. Schrank, Range distance requirements for measuring low and ultralow sidelobe antenna patterns. IEEE Trans. Antennas Propag. 30(5), 956–966 (1982) 9. R. Hansen, Measurement distance effects on low sidelobe patterns. IEEE Trans. Antennas Propag. 32(6), 591–594 (1984) 10. L. Ziomek, Three necessary conditions for the validity of the fresnel phase approximation for the near-field beam pattern of an aperture. IEEE J. Ocean. Eng. 18(1), 73–75 (1993) 11. G. Ryan, Criterion for the minimum source distance at which plane-wave beamforming can be applied.
J. J. Christensen, A class of optimal broadband phased array geometries designed for easy construction, in International Congress and Exposition on Noise Control Engineering, Dearborn, MI, 19–21 Aug 2002 20. C. H. Chen, Uniform concentric circular arrays with frequency-invariant characteristics—theory, design, adaptive beamforming and DOA estimation. IEEE Trans. Signal Process. 55(1), 165–177 (2007) 21. H. E. Dudgeon, Array Signal Processing—Concepts and Techniques (Prentice Hall, 1993) Chapter 3 Broadband Beamformer Design Abstract A beamformer is a spatial filter used to achieve spatial selectivity.