Abstract
JTIDS (Joint Tactical Information Distribution System) is a kind of anti jamming information distribution system. In order to analyze the performance of each part of JTIDS, this paper firstly analyzes the technical principles of each part, and then calculates the ber, building simulation platform based on Simulink, respectively through channel coding, CCSK soft spread spectrum, and frequency hopping system when signal is transmitted in JTIDS and gets the corresponding ber comparison figure. As the coding gain is mainly provided by RS code and CCSK code, comparisons on the coding performance of JTIDS in gauss channel, rayleigh channel and rice channel are conducted. It turns out that the channel characteristics can be described well when Rician factor is five in rice channel. In the end, by analyzing and comparing JTIDS's effects to anti-broad band noise and anti-comb interference, it finds out that the latter is more effective than the former.
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