UDC 623.624
ESTIMATION IMMUNITY IN COMMUNICATION SYSTEMS USING ORTHOGONAL FREQUENCY HOPPING
E. L. Kreidik, Deputy Head of Department, OJSC «AGAT-SYSTEM», Minsk, Belarus; This email address is being protected from spambots. You need JavaScript enabled to view it.
The task of estimating noise immunity of frequency hopping spread spectrum communication systems using orthogonal nets is considered. The use of orthogonal nets significantly complicates the direction of arrival sorting, which is performed by means of jamming station. The aim is to determine the dependence of error symbol reception average probability (or, ERP) from frequency hopping spread spectrum radio communication lines in orthogonal nets in the condition of centralized or decentralized way of repeater jammers organization. The calculation of ERP for given lines is given. The results of the calculations show that increasing number of frequency hopping spread spectrum radio communication lines when receiving a symbol on the number of orthogonal nets, in the condition of a centralized or decentralized repeater jammers leads to the decrease of ERP value giving the opportunity to overcome the upper boundary of radio electronic jamming.
Key words: orthogonal nets, frequency-hopping spread spectrum, radio communication line noise immunity, repeater jamming, jamming station, noise immunity rating, selection of arrival signal sorting.