| The development status and trends of metrology technologies for low-altitude aircraft navigation systems have been explored. It systematically elaborates on core navigation technologies, encompassing fundamental navigation techniques and comprehensive augmentation methodologies. A thorough analysis is conducted regarding the present state of navigation system testing technologies, with particular emphasis on the categorization and evaluation of various testing methodologies for critical navigation parameters. These include position-velocity measurement, heading determination, attitude assessment, and verification approaches for integrated enhancement technologies.The research identifies three primary challenges confronting current testing technologies: 1) the equilibrium between environmental adaptability in complex scenarios and real-time performance requirements, 2) discrepancies in standardization progress and regulatory frameworks, and 3) the inherent conflict between testing costs and scalability demands.Furthermore, it prognosticates four evolutionary trajectories: intelligent testing systems driven by AI integration, standardized global testing protocols, scenario-specific testing applications, and environmentally conscious sustainable testing solutions. This analytical framework provides valuable insights for advancing testing technologies in low-altitude aircraft navigation systems, offering strategic references for both academic research and industrial implementation. |
