Estimates optimization of the parameters of a noise-radiation source in a two-element radio interferometer

• Published in: Journal of communications technology & electronics Vol. 58; no. 8; pp. 778 - 789
• Main Authors: Volosyuk, V. K., Kravchenko, V. F., Pavlikov, V. V., Pustovoit, V. I.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.08.2013; Springer; Springer Nature B.V
• Subjects: Algorithms; Analysis; Arrivals; Communications Engineering; Electronics; Engineering; Estimates; Filtering; Interferometry; Maximum likelihood method; Networks; Noise; Nuclear radiation; Optimization; Radiation; Radio; Radio interferometers; Signal processing; Studies; Theory and Methods of Signal Processing; Coherence Function; Noise Temperature; Estimate Optimization; Cross Correlation Function; Correlation Function
• ISSN: 1064-2269; 1555-6557
• DOI: 10.1134/S1064226913080093

The maximum likelihood method is applied to obtain optimum estimates of the energy characteristics of a noise source and the direction of its radio-frequency radiation arrival in a two-element radio interferometer. Algorithms of optimum processing of noise signals are synthesized. The structural diagram of a radio interferometric device is presented. Potential precision characteristics of the estimates are obtained and analyzed. These solutions are characterized by the presence of adaptive decorrelation filters with various amplitude-frequency characteristics in the channels of estimation of the noise temperature and of the radiation arrival direction as well as by the presence of a controlled delay line and by estimation of the coherence function of oscillations undergoing matched filtering and decorrelation.