The problem of estimating the strengths of signals arriving at an array of receivers when the arrival directions are known, is addressed. Several new estimators are derived and relationships between them and the conventional and adaptive beamformers are given. Algorithms are provided for numerical solutions for these estimators, with examples using experimental data. The techniques are not confined to sensor-array processing but can be applied to a wide range of other estimation problems.
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H. A. Dassumpcao (1980) studied this question.
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