ANTIJAM PERFORMANCE ANALYSIS OF FREQUENCY HOPPING VOCODER RADIOS IN ELECTRONIC WARFARE

Karel Burda

   This paper contains an antijam performance analysis of the Frequency Hopping (FH) vocoder radios in electronic warfare. The analvsis is provided for both voice and data traff cs. The model considers Slow FH and Fast FH radios, conventional and mutual interferences, coding with and without interleaving and decoding with erasures and errors. The basic features of the assumed radios are following: radio transmission rate 2.5 kb/s, hop rate 139 hop/s, Reed-Solomon code with the alphabet size of 64 symbols, vocoder transmission rate 800 b/s and data transmission according to Selective Repeat type-I Hybrid ARQ protocol. The numerical results indicate that the analyzed radios have an excellent antijam performance compared with the contemporarv FH radios.

Keywords: frequency hopping, vocoder radio, electronic warfare

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