Transmission tower roadbed settlement online monitoring system and method based on millimeter-wave radar

The invention discloses a transmission tower roadbed settlement online monitoring system and method based on the millimeter-wave radar. The monitoring system comprises a millimeter-wave radar module used for obtaining ground distance data, and the ground distance data collected by the millimeter-wave radar module is transmitted to a central processing unit; and the central processing unit judges whether the ground is settled or not and judges the settlement degree according to ground distance data changes. The monitoring method comprises the steps of sampling, windowing, distance FFT, angle FFT and R-A graph construction. According to the invention, the millimeter-wave radar is used for carrying out high-precision measurement on the roadbed around the high-voltage transmission tower to obtain information such as the distance and the azimuth angle of the ground, high-precision imaging of a monitoring area is realized, and the central processing unit is used for carrying out comprehensive processing to judge wh