The Research On The Distance And Direetion Finding Technology Of Radio Fuze

In accordance with the development of distance and direction finding technology of radio fuze as well as the requirements for anti-stealth technology, the paper presents detection structure of radio fuze with multi-antenna in the condition of emission signals below 1GHz frequency range. In addition, the paper, in the basis of detection system of radio fuze compounding multi-carrier and frequency modulation, introduces an information processing plan in distance and direction finding, which has the advantages of high precision in distance measurement and good abilities in anti-interference and leakage suppression. Aiming at a detection system of radio fuze compounding multi-carrier and frequency modulation, the design of signal waveform is studied; optimization emission signal sequences in waveform design is given; a signal transmission model with compound system is set up and simulation analysis is made to signal processing methods of distance and direction finding, the results of which prove the plan’s performance. Based on the simulation, RF hardware circuit which generally ups to performance requirements and operates below 1GHz frequency range is designed. By simulation, antenna with good performance is designed and real object is produced. According to the requirements of the system, control circuit to produce control signals of frequency modulation and signal and information processing circuit are designed and produced, which prove information processing algorithm is feasible.