Design And Hardware Implementation Of GPS/Beidou Dual Mode Jamming System

In modern warfare,satellite positioning has become the core component of military weapons such as air guidance.It is the key factor to affect the modern defense system to interfere with the satellite receiving system and reduce the efficiency of the weapon.Therefore,high power,wide band,interference performance is the key research direction in the field of electronic warfare.In addition,the domestic research on anti-jamming technology needs to characterize the interference source.In this context,the research on the interference system.In this paper,we need to design a multi-channel,baseband signal generator and QPSK radio frequency modulation function integration equipment.The device is composed of FPGA baseband module,RF modulation module,DDS based carrier module,etc.,to achieve the function of the GPS/Beidou dual mode interference signal.Aiming at the demand of the project,the research is carried out.In this paper,the influence of suppressing jamming on satellite signal is analyzed,and a kind of implementation of the pseudo wideband jamming scheme is proposed.The simulation results show that the jammer based on this scheme is feasible.Analysis of the project indicators,the interference of the various modules of the circuit design,the production of interference prototype.In the application of innovation,through the DDS technology combined with the carrier occurs,resulting in GPS/Beidou dual mode interference signal,compared to single mode interference function stronger.Direct RF modulation technology,compared to the two step modulation,eliminating the intermediate frequency link,the circuit is more simple.The spectrum of the jamming prototype is tested and the interference function is tested.The results show that the jammer can realize the interference of GPS/beidou.