Frequency Agility Fm Fixed Pitch System

This paper applies the technology of frequency agility to radio fuze which has been applied widely in the field of radaf and communication, and introduces a scheme of frequency agility and frequency modulation fixed-distance fuze which has good precision of fixed-distance and strong ability of anti-interference. On the base of researching the theory of the scheme and analyzing the signal feature, it is obtained that the existence manners and character of distance information in the differential frequency signal .At the same time, a new conclusion is gained that the technology of frequency agility can decrease the constant error of system .It is also to say that frequency agility and frequency modulation fixed-distance fuze has the similar feature to random period frequency modulation fixed-distance fuze .According to the theory of address coding in the hopping-frequency communication ,the paper presents the principle of selecting the frequency agility sequence which fit to the radio fuze and constructs the frequency agility sequence family based on the RS codes. At last, the paper designs and simulates the system by computer. It is proved that the scheme is reasonable and actable according to the result of simulation.