GBAS system in complex airport environment and application method

Abstract

The invention discloses a GBAS system in a complex airport environment and an application method. The system comprises GBAS ground equipment, GBAS monitoring equipment, interference monitoring equipment and GBAS extension equipment. The GBAS monitoring equipment is used for receiving message data sent by the GBAS ground equipment and GNSS signals in the air and sending alarm information to the GBAS ground equipment; the interference monitoring equipment is used for receiving an electromagnetic signal and a GNSS signal in a working frequency band and generating interference monitoring information; and the GBAS ground equipment is used for receiving the alarm information, the interference monitoring information and the GNSS signal in the air, broadcasting the navigation data in the form of a VHF signal in the whole network, and guiding the aircraft to land safely. The GBAS extension equipment is used for receiving the VHF signal, expanding the VHF emission signal and sending the received information according to an off-peak time slot of the emission signal of the GBAS ground equipment; the GBAS ground equipment working state and signal quality monitoring is realized, the closed-loop control is realized, and the integrity and the continuity of the GBAS system can be obviously improved.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a GBAS system and an application method in a complex airport environment. Background technique [0002] The GBAS system is composed of ground equipment and airborne equipment. The ground equipment sends information such as pseudo-range correction, glide path and integrity to the airborne equipment through the VHF radio station, so as to improve the satellite navigation accuracy of the airborne equipment and enable the aircraft to achieve Class I Precision approach (CAT-I) or even a higher standard of precision approach accuracy, provides aircraft take-off and landing guidance services. [0003] Under certain complex airport environmental 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, affecti...

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

Images