Design And Implementation Of Signal Processing System In GPS Adaptive Nulling Antenna

Represented by GPS, Global Positioning System has been widely used in modern weaponsystems. In the high-tech war, the Global Positioning System is playing an increasingly important role,but the corresponding means of various kinds of interference have emerged, greatly affecting thenormal reception of positioning signal. Therefore, Studying GPS anti-jamming technology, forimproving the combat capability of troops has very important significance.In the paper, GPS anti-jamming technology, in-depth research and analysis, combined with thebackground of the subject, complete with a GPS adaptive nulling antenna signal processing subsystem.In this paper including:1. Introduction of GPS anti-jamming technology research status at home andabroad, combined with the background issues, the completion of the signal processing sub-moduledesign.2. By studying the GPS anti-jamming algorithms, and algorithms for simulation to determinethe power inversion algorithm as the core algorithm of the system.3. According to overall systemperformance requirements, the completion of the signal processing hardware platform in the designand implementation, Using Virtex-6FPGA as the core chip of the system to complete the design ofhardware schematics and PCB board.4. Debug for system hardware platform, achieve the correctconfiguration of chip and complete the power inversion algorithm for FPGA implementation.5. Thesystem with seven cell array antennas and IF channel for docking. At last, complete the appropriatedebug.After laboratory testing, the interference suppression ratio of the system is50dB forsingle-frequency interference。...