在遭遇自然灾害时,在搜救人员与受灾群众之间建立有效的联系,提高搜救效率显得尤为重要了。广播这种传统的通讯手段由于结构简单,搭建系统便捷等优点,更适合作为自然灾害的应急通讯、求救设备。因此在自然灾害中,如果受灾被困群众能够通过广播通讯将 When encountering natural disasters, it is particularly important to establish effective links between search and rescue workers and the affected people to improve the efficiency of search and rescue. Because of its simple structure and convenience of building system, this traditional means of communication of broadcasting is more suitable as emergency communication and help-seeking equipment for natural disasters. Therefore, in natural disasters, if the affected and trapped masses can communicate by radio