M.V. Knysh1, S.N. Razinkov2

1 Yaroslavl Higher Military School of Air Defense (Yaroslavl, Russia)

1 Military-air academy named after professor N.E. Zhukovsky and Y.U. A. Gagarin» (Voronezh, Russia)

When monitoring a complex radio-electronic environment, it is necessary to use data on their location obtained using spatially distributed receiver-meter systems for the selection and recognition of radio sources. For remote reconfiguration of the system in order to activate receivers with the best performance indicators of signal processing and multi-user control of receivers, receivers are used that are interfaced into a single structure through the channels of an information and telecommunications network. The potentially high accuracy of determining the coordinates of the emitters is achieved by implementing the difference-distance measurement method, since the estimates of the arrival time of signals do not depend on the diffraction distortions of their spatial structure during propagation in radio channels and amplitude feedings. Analysis of the possibilities of using the difference-rangefinder method for locating sources of short-wave radio emissions in remote monitoring systems of the radio-electronic environment based on software-controlled receivers based on the results of field experiments.

The principles of construction of spatially distributed systems for remote monitoring of the radio-electronic environment based on receivers with software-controlled receiver parameters are substantiated. Experimental estimates of the accuracy of determining the coordinates of emitters located in the European and Asia-Pacific regions by the difference-rangefinder method were obtained when synchronizing measuring posts through the channels of the control information and telecommunications network. The time of propagation of signals in the network was determined by recording the time of passage of the probing «echo signal» from the automated workplace of the operator of the monitoring system to the receiver and back. The values of the information transmission rate from the receiving posts to the automated workplace of the system operator were found, confirming the possibility of estimating the coordinates of objects in real time, as well as errors in measuring the delay time of signals in the network channels, providing small RMS errors in determining the location of the emitters. It is shown that the accuracy of locating objects at ranges corresponding to the length of the short wave propagation path with a single reflection from the ionosphere decreases as the number and density of measuring receivers increases. The well-founded principles of building location determination systems and the achievable accuracy of estimating the coordinates of radio emission sources when transmitting control and information signals through the channels of the information and telecommunications network allow remote monitoring of the radio-electronic situation in remote regions. Synchronization of measuring posts will be carried out on the basis of the network time protocol NTP – Network Time Protocol when using PING – Packet Internet Groper commands to estimate the time of transmission of signals in network channels and establish in real time the availability of receivers for communication with the automated workplace of the operator of the monitoring system.

Knysh M.V., Razinkov S.N. Experimental location of sources radio emissions in spatially distributed systems remote monitoring. Electromagnetic waves and electronic systems. 2023. V. 28. № 2. P. 15−20. DOI: https://doi.org/10.18127/j15604128-202302-02 (in Russian)

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