AN ALGORITHM OF DETECTION OF SIGNALS AND SIMULATING COMPLEX STRUCTURE HINDRANCES WHEN CONDUCTING RADIO ENGINEERING SURVEILLANCE

The article is about an algorithm of quasi-optimal detection and identification of parameters of simulating complex structure hindrances. Application of a method of local convolution of a spectrum for detection of pulse signals with intrapulse modulation is offered in this article.

Algorithm testing was conducted by a method of imitating modelling. The probability of correct detection of signals of simulating hindrances with intrapulse modulation and probability of erroneous recognition of a type of modulation of simulating hindrances was thus estimated. To solve the formulated problems specialized software has been worked out by «MATHLAB - 7.0» imitating modeling. It can execute the following functions:

− formation of signals with LFM with the set parameters;

− formation of a combination of signals and simulating hindrances with LFM;

− modeling of noise influence on a combination of signals and hindrances by

imposing additive white noise;

− calculation of a discrete spectrum of an in-coming combination;

− detection of signals and simulating hindrances with intrapulse modulation by a discrete spectrum of an in-coming combination.

The worked out algorithm allows to expand possibilities of sophisticated devices of radio monitoring to receive and process deliberate complex structure hindrances.