The invention discloses a space-air-ground integrated
broadband narrowband adaptive emergency communication
system, and relates to the technical field of space-air-ground integrated communication, and the
system comprises a communication management center, a spectrum environment sensing module which is used for monitoring the use condition of each spectrum bandwidth through spectrum monitoring equipment disposed at each layer of space, air and ground, and sending the use condition of each spectrum bandwidth to the communication management center; comprising spectrum utilization rates of
broadband and
narrowband services, and constructing a dynamic spectrum map; and the demand prediction module is used for predicting spectrum demands of future
broadband and
narrowband services in combination with the historical communication data and the current network state. Through the dynamic spectrum allocation technology and in combination with 5G waveforms, spectrum
resource allocation can be adjusted in real time according to actual service requirements and
network conditions, resource waste or insufficiency in a traditional fixed spectrum allocation mode is avoided, the
utilization rate of spectrum resources is remarkably improved through intelligent
spectrum management, and the spectrum allocation efficiency is improved. The efficient
cooperative work of broadband and narrowband services is ensured, and reliable spectrum guarantee is provided for emergency communication.