Multi-source navigation enhancement method suitable for complex flight of unmanned aerial vehicle in low-altitude airspace

Abstract

The invention provides a multi-source navigation enhancement method suitable for complex flight of a low-altitude airspace unmanned aerial vehicle, which considers a low-altitude airspace complex flight scene, and establishes a capacity model of safe flight of the low-altitude airspace unmanned aerial vehicle at different heights by calculating collision response time, on the basis, a flight safety protection level is constructed for a multi-service and heterogeneous platform unmanned aerial vehicle, and hierarchical multi-source fusion navigation enhancement is carried out by taking the requirement of the protection level as a standard. The method can be effectively suitable for a multi-service-oriented complex and dense flight scene of the unmanned aerial vehicle in a low-altitude airspace, and the operation flow, efficiency and safety of the unmanned aerial vehicle are effectively improved.

Description

technical field [0001] The invention relates to a multi-source navigation enhancement method suitable for complex flight of unmanned aerial vehicles in low-altitude airspace, and belongs to the technical field of unmanned aerial vehicles in low-altitude airspace. Background technique [0002] Low-altitude airspace refers to the flight area below 1,000 meters, which is currently in the process of classified management and gradual and orderly opening. With the rapid growth of the global drone industry, the application and control of low-altitude airspace drones are hot spots and difficulties in related fields. Low-altitude airspace navigation technology uses accurate real-time measurement of positions to ensure safe flight intervals in low-altitude airspace and prevent collisions between aircraft and between aircraft and ground obstacles. [0003] The current low-altitude airspace navigation method is mainly radio non-autonomous navigation, which has the characteristics of hi...

AI Technical Summary

Problems solved by technology

However, there are two significant disadvantages in radio navigation, which is difficult to meet the full-scenario and high-reliability requirements of high-density low-altitude airspace management in the future.

Due to the poor anti-jamming performance of radio, the rapid development of electronic countermeasure technology makes radio navigation a great security risk in the military and civilian fields; at the same time, the existing methods have a strong dependence on navigation beacons, and when restricted by urban high-rise buildings and canyons, etc. Dense deployment of ground-based navigation stations leads to greater difficulty and cost

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