Anti-Jamming Technology protects satellite navigation systems from external jamming signals. Beam forming technologies and array-antenna technologies are commonly known anti-jamming technologies — beam forming technologies combine signals from multiple antennas and amplifie the satellite signal, while array-antenna technologies use nulling techniques to remove jamming signals.

Anti-Jamming Technology is widely used in weapon systems such as guided weapon systems, unmanned aerial vehicles, etc. Development of anti-jamming technologies for micro/nano-satellites and reseaches on advanced satellite navigation technologies are in progress.