What is the standard antijam technique?

Frequency hopping is recognized as a standard antijam technique primarily because it enhances the reliability of signal transmission in the presence of potential interference or jamming. This method involves rapidly switching the carrier frequency during radio transmission in a predetermined sequence known only to the sender and receiver. By constantly changing frequencies, it becomes significantly more difficult for an adversary to jam the signal effectively, as they would need to accurately predict the frequency changes in real time.

This technique not only improves the resilience of communication systems against jamming attempts but also minimizes the risk of interception, since the signal appears on different frequencies. Frequency hopping is widely utilized in various communication technologies, including military applications and secure communication devices, precisely for these reasons, making it an essential technique for maintaining robust communication in adverse conditions.