gbas system and application method in complex airport environment

Abstract

The invention discloses a GBAS system and an application method in a complex airport environment. The system includes GBAS ground equipment, GBAS monitoring equipment, interference monitoring equipment, and GBAS expansion equipment; the GBAS monitoring equipment is used to receive text data sent by GBAS ground equipment and air GNSS signal, to send alarm information to the GBAS ground equipment; the interference monitoring equipment is used to receive electromagnetic signals and GNSS signals in the working frequency band, and generate interference monitoring information; the GBAS ground equipment is used to receive the alarm information, Interference monitoring information and GNSS signals in the air, and broadcast the navigation data in the form of VHF signals to the entire network to guide the aircraft to land safely. GBAS extension equipment is used to receive VHF signals and extend VHF transmission signals, and send and receive information according to the off-peak time slot of GBAS ground equipment transmission signals; realize GBAS ground equipment working status and signal quality monitoring, and realize closed loop Control can significantly improve the integrity and continuity of the GBAS system.

Description

Technical field [0001] The present invention relates to the field of satellite navigation technology, in particular to a complex airport environment GBAS system and application methods. Background [0002] GbAS system is composed of ground equipment, airborne equipment, ground equipment through the VHF radio pseudo-distance correction amount, down navigation and integrity and other information sent to the airborne equipment, improve the airborne equipment satellite navigation accuracy, so that the aircraft to achieve Class I precision approach (CAT-I) or even higher standards of precision approach accuracy, to provide take-off and landing guidance services for aircraft. [0003] Under certain complex airport environmental conditions, such as mountain and island airports, due to the terrain around the airport, VHF communication signals are blocked by obstacles such as mountain peaks, resulting in limited coverage and flight height, affecting flight safety. Under some complex elec...

AI Technical Summary

Problems solved by technology

[0003] In some complex airport environment conditions, such as mountainous and island airports, affected by the surrounding terrain of the airport, VHF communication signals are blocked by obstacles such as mountains, resulting in limited coverage and flight altitude, affecting flight safety

Under certain complex electromagnetic environment conditions, such as the edge of cities, airports located near large fishing grounds or dense waterways; due to the large number of wireless communication devices around, GNSS satellite signals and VHF signals are susceptible to interference from other signals in the electromagnetic environment, resulting in GBAS The system works abnormally, and even affects flight safety in severe cases

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