Design of UAV Image Multi-frequency Point Transmitting System

This article introduces a scheme for implementing multi-channel signal transmission in the 5.8GHz band through a single button. First, the image is transmitted to the transmitting module in real time through the image control module for signal processing and signal modulation. Then the transmitting module selects the frequency corresponding to the three channels CH1, CH2, and CH3 in the SPI mode. The control module realizes multi-channel transmission to CH1, CH2, and CH3 by controlling the long press and short press time, and finally transmits the modulated signal through the antenna.