“北斗”卫星是中国自行研制的全球卫星导航系统。大力推广“北斗”在各行业的应用,不仅可以促进“北斗”产业的发展,提升各行业的技术水平和效率,更是对国家安全战略的有效保障。近年来,城市中出现了大量的超高层建筑和超限大跨的建(构)筑物,城市大量工地开挖、地下管廊、地下隧道的不断开凿建设,导致城市地下空间发生 “Beidou ” satellite is a self-developed global satellite navigation system developed by China. Vigorously promoting the application of Beidou in various industries will not only promote the development of the Beidou industry and upgrade the technical level and efficiency of various industries, but also effectively guarantee the national security strategy. In recent years, a large number of super high-rise buildings and large-span overpasses (structures) have appeared in the cities. The excavation of a large number of construction sites, the construction of underground pipe galleries and underground tunnels in cities have led to the occurrence of urban underground space