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Autonomous navigation method of aircraft and system

A technology of autonomous navigation and navigation method, which is applied in the directions of ground navigation, radio wave measurement system, satellite radio beacon positioning system, etc. Switching, improving reliability, solving the effect of data mutation

Active Publication Date: 2017-07-04
SHANGHAI ZHONGFANG COMP TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the navigation accuracy of the magnetic field measuring instrument is low during absolute navigation, and there is no navigation available when the GNSS navigation is invalid, resulting in low reliability, the present invention provides an aircraft autonomous navigation method based on the geomagnetic field measuring instrument and GNSS. Two navigation methods, instrument navigation and GNSS navigation, realize high-precision and high-reliability navigation, and improve the reliability of the aircraft's autonomous absolute navigation method

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  • Autonomous navigation method of aircraft and system

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Embodiment 1

[0055] See figure 1 , Is a schematic diagram of the flow chart of the aircraft autonomous navigation method in the present invention. The specific process of the aircraft autonomous navigation method in the present invention will be described according to the flowchart. The specific steps of the aircraft autonomous navigation method are as follows:

[0056] S1. Obtain the position information detected by the GNSS module in a cycle;

[0057] S2. Obtain the magnetic field information detected by the magnetic field measuring instrument periodically;

[0058] S3. Determine whether the GNSS module is valid according to the location information of the GNSS module:

[0059] If the GNSS module is valid, set the aircraft to GNSS navigation mode and navigate according to the position information output by the GNSS module;

[0060] If the GNSS module is invalid, set the aircraft to the magnetic field measuring instrument navigation mode and go to step S4;

[0061] S4. Calculate the position of the...

Embodiment 2

[0087] The invention also provides an autonomous navigation system for an aircraft, see figure 2 The autonomous navigation system of the aircraft includes a GNSS module, a magnetic field measuring instrument and a data processing module. The GNSS module detects the position information of the aircraft and sends the position information of the aircraft to the data processing module periodically; the magnetic field measuring instrument detects the magnetic field information and position information, and The magnetic field information and position information are sent to the data processing module periodically; the data processing module judges whether the GNSS module is valid according to the position information of the GNSS module, and according to the position information of the aircraft detected by the GNSS module and the magnetic field information detected by the magnetic field measuring instrument , Calculate the position of the aircraft, calculate the position information o...

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Abstract

The invention relates to the technical field of aircraft navigation and control, in particular to an autonomous navigation method of an aircraft and a system. In the method and the system, position information output by a GNSS module and magnetic field information detected by a magnetic field measurement device are acquired periodically. When the GNSS is valid, the navigation output value is the position information of a GNSS receiving machine, and when the GNSS is invalid, position information of the aircraft is calculated according to the magnetic field information of the magnetic field measurement device by use of the fusion filtering algorithm and the Newton iteration method, and the output value is used as a navigation value. According to the invention, precise navigation can be performed when the GNSS is valid and invalid; by use of the fusion filtering algorithm, data between two navigation modes can be smoothly switched, navigation precision of the aircraft is ensured and the reliability of the whole aircraft navigation system is effectively improved.

Description

Technical field [0001] The invention relates to the technical field of aircraft navigation control, in particular to an aircraft autonomous navigation method and system. Background technique [0002] With the development of aircraft technology, the flight of aircraft is gradually transitioning from manual control flight to autonomous flight, and autonomous and reliable navigation technology is one of the key technologies that need to be solved urgently to realize autonomous flight. Aircraft navigation can be divided into multiple types according to different working principles. For example, the geomagnetic field navigation in the prior art mainly adopts the method of magnetic field matching, that is, the geomagnetic field and the corresponding longitude, latitude, and altitude information are pre-stored in the processor of the aircraft, and the aircraft will collect the magnetic field measuring instrument during the flight. The magnetic field is matched with the pre-stored magne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/45G01C21/08
CPCG01C21/08G01S19/45
Inventor 梁琳
Owner SHANGHAI ZHONGFANG COMP TECH
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