US military improves the anti-jamming capability of GPS receivers
The United States has developed an improved GPS receiver that can provide 36-40dB. This anti-jamming method is called "anti-jamming autonomous integrity monitoring extrapolation", which is realized by fully coupling the GPS receiver and inertial navigation at the carrier phase level. It is understood that this new type of anti-jamming receiver was originally installed on the outer space-to-surface missile developed by the company.
Several methods should be used to improve the anti-jamming capability of GPS satellite systems. The main methods include enhancing the power of GPS signals and avoiding the radiated energy of jammers. The methods of avoiding the radiated energy of GPS jammers include adaptive frequency tracking or beams. forming techniques, as well as beam nulling techniques or post-correlation beams.