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Interference immunity of extended adaptive arrays under the action of spatially incoherent interference

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Abstract

The interference immunity of adaptive antenna arrays is usually analyzed in the case of known and nondistorted wavefronts of received signals. At the same time, in some applications such as sonars and underwater communication systems, the propagation medium is nonisotropic and random. Then the signal wavefronts can be distorted randomly. In this paper, we analyze the potential interference immunity of the optimal/adaptive algorithms for spatial processing in the case of incomplete spatial coherence of signals. Analytical expressions for the output signal-to-noise ratio are obtained for both the case of useful signal with reduced spatial coherence and the case of interference. Theoretical results are compared with numerical results.

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Authors
  1. D. Montalbano
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  2. G. Serebryakov
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Additional information

Torino Polytechnical Institute, Torino, Italy; Research Institute of Applied Mathematics of the Nizhny Novgorod University, Russia. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 41, No. 6, pp. 775–791, June, 1998.

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Montalbano, D., Serebryakov, G. Interference immunity of extended adaptive arrays under the action of spatially incoherent interference. Radiophys Quantum Electron 41, 523–534 (1998). https://doi.org/10.1007/BF02676686

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  • DOI: https://doi.org/10.1007/BF02676686

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