Abstract. The major problem of creation of modern RES is the increase
of their security and visibility from equipment of radio engineering
investigation (RTR) of the contradictory party. In the range of radio
waves it is reached by creation of the low-reflecting designs of antenna
systems of radar-tracking systems (RTS) in various frequency ranges and decrease
of radiation level of onboard radio equipment of radio-electronic means (RES)
to background level. Methods of calculation of levels of radiation of RTS for
the basic and lateral lobes of the directional pattern of antennas are well
investigated and the bibliography on the specified question totals tens numbers.
However, the big variety of the RTS types and conditions of their supervision
by means of RTR leads to insufficient research of the problems of a choice of
types and characteristics of the probing RTS signals for
ensuring security by passive methods. Therefore
the purpose of work is the formation of requirements to the power of the
probing signal (PS) of RTS for ensuring security of its functioning and the
analysis of the required time of coherent accumulation when
using difficult PS. The criterion of ensuring security of RTS operation by passive
methods is investigated. Calculations of the maximum values of peak power of
the probing signal in the absence of influence of an interferential multiplier
and losses during distribution, taking into account characteristics of modern
receivers of radio engineering investigation, are carried out. Requirements to
time of coherent accumulation are formulated. It is shown that for implementation
of these requirements it is necessary to use RTS with adaptive existential
coherent accumulation. Passive methods really provide security of operation on
lateral lobes of the directional pattern of RLS.
Keywords: radar-tracking
system, antenna, directional pattern, ńoherent accumulation.
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