A multi-source navigation enhancement method for complex flight of UAV in low-altitude airspace

Abstract

The present invention provides a multi-source navigation enhancement method suitable for the complex flight of UAVs in low-altitude airspace. The method considers the complex flight scene in low-altitude airspace, and establishes the safe flight capacity of UAVs in low-altitude airspace at different heights by calculating the collision response time. Based on this model, a flight safety protection level is constructed for multi-service and heterogeneous platform UAVs, and hierarchical multi-source fusion navigation enhancement is carried out to meet the requirements of the protection level. The present invention can be effectively applied to complex and dense flying scenes of unmanned aerial vehicles oriented to multi-services in low-altitude airspace, and can effectively improve the flow rate, efficiency and safety of unmanned aerial vehicle operations.

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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