High-precision Direction Finding And Location Based On Moving Platform

Airborne communication signals reconnaissance receiver system has many advantage, including mobile and vivid, wide cover, high adaptability, far effective distance, can finish the task which the ground system can not do, etc. It has been widely used in radio monitoring and has broad prospects for application. At present, the location system is mostly confront the location of single target, and hardly confront the network communication, this thesis consider the location method from the network countermine to research location and topology recognition technology of the Field Communication Network which has very important practical significance.The dissertation is organized as follows.(1) The theory of direction finding based on multi-line phase interferometer and location based on phase difference rate of change and time difference is introduced.(2) Several methods for improving the precision of Direction Finding and location are introduced, include array error calibration and location based on Direction Finding and MGEKF.(3) This dissertation analyzes Field Communication Networks system’s structure and technology performance in detail. And then research the methods of location and topology recognition.(4) Make deep research on the design of direction finding and location system based on moving platform. The design of workflow and working principles is studied, then the concrete analysis of function modules, which is designed to achieve the functions and indexes of the system is studied. At last, the accuracy of direction finding and location in flying experiment is presented.