A.A. Lvov – Dr.Sc.(Eng.), Professor, Department «Information and Communication Systems and Software Engineering», Yuri Gagarin State Technical University of Saratov

E-mail: alvova@mail.ru

V.P. Meschanov – Dr.Sc.(Eng.), Professor, Director of NIKA-Microwave, Ltd (Saratov) E-mail: nika373@bk.ru

M.S. Svetlov – Dr.Sc.(Eng.), Leading Research Scientist, Institute of Precision Mechanics and Control RAS (Saratov) E-mail: svetlovms@yandex.ru

A.Yu. Nikolaenko – Post-graduate Student, Department «Information and Communication Systems and Software Engineering», Yuri Gagarin State Technical University of Saratov E-mail: anikolaenkosstu@gmail.com

The paper considers optimal in the sense of minimum mean squared error algorithms of measurement data digital processing for the most popular automatic network analysers (ANA) based on vector voltmeter, multi-port reflectometer, and multi-probe transmission line reflectometer. The algorithms use the universal maximum likelihood technique for solution of the ANA equations. Advantages of the proposed approach are discussed.

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