Reflections on Development of Cislunar Satellite Navigation System

The development status and trends of GNSS(Global Navigation Satellite System)cislunar navigation services, construction of lunar satellite navigation system, and lunar spatiotemporal benchmarks were analyzed in detail. A development concept for near Earth space, Earth-Lunar transfer, near Lunar space satellite navigation, and lunar spatiotemporal benchmarks was proposed. Additionally, suggestions are made about strengthening the research of key technologies and systematic in-orbit verification, achieving interconnectivity of cislunar satellite navigation system and unified traceability of spatiotemporal benchmarks, enhancing the integrated design of navigation and communication functions, and gradually establishing lunar space infrastructure in a "regional first, full Moon second" manner.