Research On Wideband Direction Finding Techniques Of Anti-radiation Seeker

Anti-radiation seeker can complete the emitter signal detection angle information to guide anti-radiation missile targets, and is a key component of anti-radiation missiles weapon system. Study on the technology of broadband anti-radiation seeker for anti-radiation missiles has an important significance of hitting targets of the radiation sources precisely.With the utilization of spectrum in modern electronic increasingly high, and various types of radar working bandwidth increasingly wide, puts forward a higher requirement for the direction finding bandwidth of anti-radiation seeker. Based on working principle of anti-radiation seeker, the paper, first, studies amplitude comparison of a single pulse direction finding techniques and analyzes the factors affecting direction finding performance. Secondly, studies one-dimensional linear interferometer technology, its ways of solving direction finding ambiguity, and the factors affecting the direction finding performance has simulated and analyzed. Then the two-dimensional linear interferometer measurement technology has been studied, including L type and cross type arrangement of the two-dimensional linear interferometer direction finding technique and their finding properties has simulated and analyzed. And finally, in order to resolve the problems of the baseline length between the antenna limited to the unambiguous finding and measurement accuracy when the process of broadband finding, deeply studies the Wide-band direction finding technology of amplitude comparison interferometer, and its traditional solutions of fuzzy algorithms has been improved to improve the wideband direction finding precision, and its direction finding performance has been simulated and analyzed.