Abstract
We consider the methods of covariance matrix reconstruction for sensing an extended noise-like emitter which moves near the receiving antenna array and is modelled as a random longitudinal distribution of external elementary sources. Linearized maximum-likelihood equations for the desired covariance matrix are obtained in the cases of a priori known and unknown covariance matrix of the noise background. The variance of estimates for the elements of the covariance matrix characterizing the emitter is studied.
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Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 41, No. 9, pp. 1163–1176, September, 1998.
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Vdovicheva, N.K., Turchin, V.I. & Fiks, I.S. Remote sensing of moving wide-band sources. Radiophys Quantum Electron 41, 783–792 (1998). https://doi.org/10.1007/BF02677633
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DOI: https://doi.org/10.1007/BF02677633