А.I. Shatilov - Ph.D. (Phys.-Math.), Leading Research Scientist, JSC «RPC «NIIDAR». E-mail: aishatilov@mail.ru

Evolutionary improvement of information characteristics is typical for modem early warning radar, compared with the same characteris-tics of early warning radar of the second half of the last century. At the same time, there appeared a booming and promising technology «MIMO-radar» (Multiple Input - Multiple Output), which allows to achieve high resolution multi-position radar system in the space-time-frequency domain. The use of this technology as a multi-position radar system with the minimum sufficient structure, including the existing and future early warning radars, is proposed in the article. The composition of the multi-position radar system, based on the early warning radar and three remote receivers, its structure and possible scheme of locations is given to specify the «MIMO-radar» technology. Two ways of data processing for multi-position radar system are considered, depending on the composition of the evaluated parameters of early warning radar and remote receivers in a single measurement. In the first way there is evaluation only of the coordinate informa-tion about the detectable space object by multi-position radar system. In the second way, in addition to the first, there is evaluation of Doppler frequency shifts for coordinate information components. The secondary processing procedure is required for the first way of data processing, when there is only the coordinate information. This processing is similar to the space object-s tracking procedure by the conventional early warning radar. The duration of secondary processing due to more high-precision measurements will be shorter than for conventional early warning radar, under equal conditions. In a second embodiment, need for secondary processing is eliminated, if the achieved accuracy meets the consumer. Both targets and noise sources are considered as space objects, which can be served by multi-position radar system. When working at a target, a single measurement is generated using a sumdistance measuring method, and when working at a noise source - using a with differential-distance measuring method. Estimations of potentially achievable root-mean square errors of the measured by multi-position radar system parameters are obtained for each way of data processing. An accuracy characteristics - comparison of the two data processing ways for multi-position radar sys-tem between themselves and with the similar characteristics of a conventional early warning radar, is carried out.

 

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