Frequency-Hopping Spread Spectrum

Communication or remote control is achieved through radio frequency signals emitted from space. It takes up a certain frequency, and the spectrum isvery limited. The more apps you have, the more likely you are to crash. There are many effective ways to reduce mutual interference. Frequency hoppingis one of them.That is to say, the lanes are changed "in sequence" over time, and the "sequence" is random, known only to the receiver and receiver of the system. They are synchronized with each other, according to the established frequency hopping group frequency hopping. As shown in the figure, the horizontal axis represents time, while the vertical axis represents frequency band. As time changes, the transmitting and receiving devices work in different frequency bands.