The invention relates to the technical field of broadcast
signal dynamic switching, and discloses a multi-mode broadcast
signal intelligent switching method and
system based on DRM, and the method comprises the steps: obtaining real-time geographic position information, real-time weather conditions and a historical switching
record database; inputting the real-time geographic position information and a regional transition zone obtained by regional analysis into a geographic region division model to obtain the number of DRM broadcast
signal modes; inputting a dynamic weather weighted
data set constructed according to real-time weather conditions into the signal attenuation model to obtain a real-
time signal intensity attenuation
granularity value; extracting similar historical switching sequences according to the historical switching
record database; performing matching calculation according to the similar historical switching sequence to obtain a matching result confidence coefficient; according to the similar historical switching sequence and the DRM broadcast signal
mode number, multi-mode broadcast signal switching planning analysis is carried out, and a real-
time optimal switching sequence is obtained. According to the method, high-precision matching of the historical switching data and the real-time scene can be realized.