M.V. Klestova – Software Engineer,

LTD «STC» (St. Petersburg) E-mail: klestovamv@mail.ru

V.A. Khmelnitskii – Software Engineer,

LTD «STC» (St. Petersburg)

E-mail: khmelnitskii.vladislav@gmail.com

A.P. Ushakov – Team Leader, LTD «STC» (St. Petersburg) ushaandrej@gmail.com

D.V. Tsarik – Head of Department,

LTD «STC» (St. Petersburg)

E-mail: dvtsar@gmail.com

In this article an algorithm and a mathematical model for the study of angular and difference-distance methods for the positioning of radio sources are proposed. Algorithms are oriented for positioning radio sources with frequency-hopping spread spectrum and may apply in passive radio monitoring systems

During the operation of these algorithms the following items are performed:

1. The spatial cross-correlation function for the difference-distance method is calculated.
2. The spatial power distribution for the phase method is calculated.
3. The number of maxima in the spatial distribution exceeding a specified threshold value is calculated for both methods.
4. The number of maxima obtained determines the degree of spatial separation of radio emission sources. Algorithms are implemented in MATLAB.

1. Yarlykov M.S. Statisticheskaya teoriya radionavigatsii. M.: Radio i svyaz'. 1985. [in Russian]
2. Petrov V.P., Shauerman A.K. Spektral'nye sposoby otsenki napravleniya istochnikov signalov v adaptivnykh antennykh reshetkakh. Vestnik SibGUTI. 2011. № 2. S. 53–62. [in Russian]
3. Patent RF № 2659808. Sposob i ustroystvo opredeleniya koordinat istochnika radioizlucheniya. Zolotov A.V., Klestova M.V., Klishin A.V. i dr. Opubl. 04.07.2017. Byul. № 19. [in Russian]
4. Denisov V.P., Dubinin D.V. Fazovye radiopelengatory. Monografiya. Tomsk: Tomskiy gosudarstvennyy universitet sistem upravleniya i radioelektroniki. 2002. [in Russian]
5. Ustinov K.V. Adaptivnaya prostranstvennaya fil'tratsiya v sistemakh mestoopredeleniya istochnikov radioizlucheniy. Antenny. 2011. № 1 (164). S. 13–15. [in Russian]