Abstract
Most adaptive receiving arrays permit beam steering in a selected “look” direction while rejecting or nulling strong interferences which arrive at angles other than the look direction. Nulling is accomplished by adjusting parameters of a signal processor connected to the array sensing elements (whether at rf, audio, or seismic frequencies) to minimize total output power. A signal arriving in the look direction would not be nulled because the adaptive process is constrained to maintain a predetermined sensitivity in the look direction.
A substantial literature exists in the field. The September 1976 issue of the IEEE Transactions on Antennas and Propagation was dedicated to the subject of adaptive antennas. It is the purpose of this presentation to compare the works of Howells and Applebaum, Widrow, and Frost.
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References
P. Howells, “Intermediate Frequency Sidelobe Canceller,” U. S. Patent 3 202 990, Aug. 24, 1965.
S. P. Applebaum, “Adaptive Arrays,” Special Projects Lab., Syracuse Univ. Res. Corp., Rep. SPL TR 66 – 1, Aug. 1965.
B. Widrow, et al., “Adaptive Antenna Systems,” Proc. IEEE, Vol. 55, pp. 2143 – 2158, Dec. 1967.
O. L. Frost, III, “An Algorithm For Linearly Constrained Adaptive Array Processing,” Proc. IEEE, Vol. 60, pp. 926 – 935, Aug. 1972.
B. Widrow, et al., “Adaptive Noise Cancelling: Principles and Applications,” Proc. IEEE, Vol. 63, pp. 1692 – 1716, Dec. 1975.
B. Widrow and M. Hoff, Jr., “Adaptive Switching Circuits,” in IRE Wescon Cony. Rec., pt. 4, pp. 96 – 104, 1960.
L. J. Griffiths, “A Simple Adaptive Algorithm For Real-Time Processing In Antenna Arrays,” Proc. IEEE, Vol. 57, 303 pp. 1696 – 1704, Oct. 1969.
References
Senne, K.D., “Adaptive Linear Discrete-Time Estimation,” Ph.D. Dissertation, Stanford University, June 1968.
Gersho, A., “Adaptive Equalization of Highly Dispersive Channels for Data Transmission,” Bell System Technical Journal, Vol. 48, No. 1, January 1969.
Chestek, R.A., “The Addition of oft Constraints to the LMS Algorithm,” Ph.D. Dissertation, Stanford University, May 1979.
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© 1979 Institute of Electrical and Electronics Engineers, Inc.
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Widrow, B. (1979). A Review of Adaptive Antennas. In: Bjørnø, L. (eds) Underwater Acoustics and Signal Processing. NATO Advanced Study Institutes Series, vol 66. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8447-9_23
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DOI: https://doi.org/10.1007/978-94-009-8447-9_23
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