Aerial positioning method for aircraft based on narrowband beam directional antenna

Abstract

The invention discloses an aerial positioning method for an aircraft based on a narrowband beam directional antenna. The method comprises an initial link building stage and a continuous positioning stage. The aircraft completes initial positioning by using a response signal of a ground measurement and control station, continuous positioning is required to be performed because the aircraft has beenin high-speed movement, wireless ranging is achieved by using periodic signal interaction between the aircraft and the ground measurement and control station, and aerial position coordinates are calculated according to location data of the ground station and narrowband beam direction information. The aerial positioning method can achieve that the aerial aircraft builds an information interactionlink with the ground measurement and control station after the failure of a satellite positioning means and realizes initial positioning, ensures real-time alignment and correction between directionalantennas of the both parties in the flying process at the same time and has a quick automatic recovery capability after link interruption caused by abnormal motorization of the aircraft.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an aircraft air positioning method based on a narrowband beam directional antenna. Background technique [0002] It is of great significance for air vehicles to obtain their own flight position in real time to ensure safe flight, and the satellite positioning systems of China's Beidou, the United States GPS, the European Union's Galileo or Russia's Gnass all have the possibility of signal interference or system destruction at the military level Therefore, it is very important to provide a set of air positioning methods for aircraft that do not require satellite systems, are simple and are not susceptible to interference. [0003] It is the basic idea of ​​all wireless positioning systems that the object to be located utilizes the wireless signal interaction between multiple ground anchor points that already have accurate position information to achieve ranging a...

AI Technical Summary

Problems solved by technology

[0007] The antenna of the ground measurement and control station has a large volume and weight, so the beam angle of the main lobe is very small, and the suppression effect on the side lobe is more obvious; while the airborne multi-lens antenna is limited in terms of volume and weight, so the beam angle of the main lobe is relatively large. And the side lobe suppression effect is relatively poor

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