Emergency HF/UHF Command and Communication System for Mountainous Area Applications

This paper analyses the damage on the communication systems,rush-repair of communication facilities and the command and communication condition in mountainous area in Wenchuan Earthquake,explains the importance of establishing emergency command and communication system for mountainous area and the characteristics which should be owned by the system,and proposes a model of emergency command communication system based on short-wave(HF) and ultrashort wave(UHF) digital trunking communication technology.The HF radio communication system is used to connect the county town to the provincial city,the digital trunking communication system is used to connect the rural town to the county town,and the wireless broadcasting system is employed for the villages.The emergency communication system is featured by low cost and high security of communication information. It is able to cope with the earthquake disasters and transmit emergency information to all the people in the emergency area.