Anti-collision alarm method suitable for helicopter

Abstract

The invention discloses an anti-collision alarm method suitable for a helicopter. The method comprises: calculating a normal trajectory and an escape trajectory of the helicopter in real time at certain frequency during flight of the helicopter; determining a helicopter obstacle / high-tension cable alarm boundary based on the normal trajectory and the escape trajectory of the helicopter; simplifying an obstacle and high-tension cable system; superposing obstacle data and high-tension cable data to a terrain database to complete terrain database reconstruction; comparing the obstacle / high-tension cable alarm boundary with the reconstructed terrain database to perform alarm judgment; acquiring, by a multifunctional display, obstacle / high-tension cable data information around the helicopter, and displaying obstacles / high-tension cables within a certain range taking the position of the helicopter as a center on the display. The method provides anti-collision alarm for obstacles and high-tension cables on the flight line of the helicopter, to remind pilots of taking necessary mobile measures, so as to avoid obstacle or high-tension cable collision accidents.

Description

technical field [0001] The invention belongs to the technical field of obstacle / high-voltage line anti-collision warning for helicopter flight, and in particular relates to an obstacle / high-voltage line anti-collision warning method suitable for low-altitude flying helicopters under complicated weather conditions. Background technique [0002] In aviation flight, the situation of crash due to lack of awareness of terrain, obstacles and high-voltage lines around the aircraft is called controlled flight into terrain (CFIT), and CFIT has always been a One of the leading causes of accidents in modern commercial aviation. Helicopters often fly in low-altitude areas with complex geographical environments, and CFIT is also an important cause of accidents. During the flight, the helicopter not only has the risk of hitting the ground, but also may hit obstacles such as TV towers, high-rise buildings, chimneys, transmission towers and high-voltage lines, which may cause CFIT accident...

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Problems solved by technology

[0007] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a kind of anti-collision warning method suitable for helicopters, to solve the problem in the prior art that the helicopter’s obstacle and high-voltage line anti-collision warning functions cannot be provided, which greatly limits Improve the performance of the helicopter

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