Dianzi Jishu Yingyong (May 2018)

Antenna array anti-jamming RF front-end of GPS

  • Wei Tao,
  • Yang Zufang,
  • Pan Wei,
  • Zheng Jiansheng

DOI
https://doi.org/10.16157/j.issn.0258-7998.173528
Journal volume & issue
Vol. 44, no. 5
pp. 119 – 123

Abstract

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Global Navigation Satellite System(GNSS) is of great significance for anti-interference research. The signal acquisition of anti-interference technology based on antenna array needs multiplex signals, which is difficult for the general signal channel Radio Frequency(RF) front-end. The system was designed for the GPS anti-jamming RF front-end of four-element antenna array. The system received four channels of GPS signals through the four-element antenna array. After the processing of a low noise amplifier, RF filters ,RF chip of GP2015 and down-conversion, the received GPS signals was transformed into the intermediate frequency signal, which was supplied to the A/D sampling behind. Besides, the sampling data was sent to anti-jamming modules to realize anti-jamming. Device selection for each unit is described in detail. Finally, the RF front-end of the whole circuit was justified. The feasibility of the system is verified by practical application.

Keywords