A.V. Zhuravlev – Dr.Sc. (Eng.), Senior Research Scientist, Main Designer – Deputy General Director, JSC SPE «PROTEK» (Voronezh, Russia)

E-mail: protek@protek-vrn.ru

V.V. Kiriushkin − Ph.D.(Eng.), Associate Professor, Head of Department, 

JSC SPE «PROTEK» (Voronezh, Russia)

E-mail: kiryushkin.vlad@mail.ru

S.I. Babusenko − Ph.D.(Eng.), Associate Professor, Leading Research Scientist,

JSC SPE «PROTEK» (Voronezh, Russia)

E-mail: sergbs@mail.ru

V.G. Markin – Leading Engineer, 

JSC SPE «PROTEK» (Voronezh, Russia)

E-mail: marvigs@mail.ru

Target statement. At present, researchers and practitioners pay significant attention to multipositional radarsystems. Such interest bases on their informational and energy advantages in comparison to monostatic observing systems and the possibility of using extraneous radiators to illuminate targets. Previously, a multipositional radar system was synthetized basing on a network of specialized radiators which used broadband phase code manipulated signals with code division and its secondary processing subsystem’s accuracy characteristics were investigated. However, arrange of issues still remain tactless. These include the energy ratio between the thermal noise in the innerreceive rand the levels of the main and later alpetals of auto- and intercorrelation functions of the received signal, the possibility of simultaneous observation of several target responses inividually, the necessity to prolong the signal storage time in the receiver to compensate remote targets responses degradation. Therefore, anadequate simulation modelis required to investigate the above mentioned issues without conducting natural experiments.

Objective. To develop a simulation model of primary processing in a multipositional radar system receiver on a base of special radiators, which would take into account the multipositional system’s geometry, the radars’ energy characteristics, the receiver’s noise parameters and the features of multichannel correlation signal processing in the receiver, and to assess levels of signals produced by the primary processing system.  

Results. Simulation modeling confirms the model’s adequacy: the use of orthogonal pseudorandom sequence in signals allows to obtain targets responses formed by the signal of only one respective transmitter one a channel receiver; the number of responses one a channel corresponds to the number of targets; long latency responses have less amplitude; the receiver’s inerthermal noise far exceeds the levels of lateral petals of auto- and inter correlation functions of the received; signal/noise ratio for the responses obtained from short-range targets allow stable observation at the noises level; long-range targets’ responses become practically indistinguishable against the noises, which requires extra signal storage in the receiver for the stable observation. 

Practical implication. The simulation model developed allows to preliminary assess energy ratios of primary processing subsystem’s operation in any receiver of any multipositional radar system using phase-code manipulated signals without conducting natural experiments.

Zhuravlev A.V., Kiriushkin V.V., Babusenko S.I., Markin V.G. Simulation modeling of primary signal processing in  receiver of special transmitters based  multistatic radar system. Radiotekhnika. 2020. V. 84. № 6(12). P. 58−DOI: 10.18127/j00338486-202006(12)-010.

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