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Current Situation and Development of Anti-jamming Technology of GPS System in USA

SUN Hong-tuo,WANG Chang-qing,FENG Ji-dong (Northeast Research Institute of Electronic Technology, Jin zhou 121000,China)  
The anti-jamming technology and development for US GPS system were discussed in this paper.The features of advanced GPS anti-jamming Technology were analysed,such as selfadaptive zero setting,frequency domain and time domain filtering of GPS receiving antenna, receiving codes(P and M),psendo satellite and combination of GPS and INS.The influence of new generation GPS program on improvement of GPS anti-jamming performances in the future was described. The developing trend of GPS anti-jamming technology was discussed finally.
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