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Method and system for navigation mode selection of an aircraft

A navigation mode and aircraft technology, which is applied in the field of flight management system, can solve single problems, and achieve the effect of high position accuracy and excellent navigation performance

Active Publication Date: 2022-02-08
COMAC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of using a single GNSS source in the prior art, it is desired to provide an improved method and system for selecting the navigation mode of the aircraft

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  • Method and system for navigation mode selection of an aircraft
  • Method and system for navigation mode selection of an aircraft
  • Method and system for navigation mode selection of an aircraft

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the described exemplary embodiments. It will be apparent, however, to one skilled in the art, that the described embodiments may be practiced without some or all of these specific details. In other example embodiments, well-known structures have not been described in detail to avoid unnecessarily obscuring the concepts of the present disclosure. It should be understood that the specific embodiments described herein are only used to explain the present invention, not to limit the present invention. Meanwhile, the various aspects described in the embodiments can be combined arbitrarily under the cond...

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Abstract

The invention discloses a method for selecting a navigation mode of an aircraft, comprising: selecting one or more GNSS sources among a plurality of GNSS sources; obtaining IRS navigation information from an inertial reference system (IRS), wherein the IRS navigation information includes information on aircraft a first estimate of position and is obtained by an inertial reference system based on the initial position of the aircraft and internal real-time calculations; receiving navigation signals from the selected one or more GNSS sources; obtaining pseudorange information based on the navigation signals, wherein the pseudorange information including pseudoranges and pseudorange rates between the selected one or more GNSS sources and the aircraft; obtaining GNSS navigation information based on the pseudorange information, wherein the GNSS navigation information includes a second estimate of the position of the aircraft; based on the selected one Pseudorange information from multiple GNSS sources or GNSS navigation information is combined with IRS navigation information to obtain the final position of the aircraft. A system for navigation mode selection of an aircraft is also disclosed.

Description

technical field [0001] The present invention relates to the technical field of flight management systems (Flight Management System, FMS), in particular to a method and system for selecting a navigation mode of an aircraft. Background technique [0002] The flight management system (FMS) is an airborne avionics system that assists pilots in completing various tasks from takeoff to landing. FMS can estimate the position of the aircraft in the air through onboard autonomous navigation sensors, ground-based radio navigation systems and satellite navigation systems. At present, the most widely used satellite navigation system for FMS is the GPS system of the United States. [0003] The global navigation satellite system (Global Navigation Satellite System, GNSS) that has been built and applied worldwide includes GPS in the United States, Beidou Satellite Navigation System (BDS) in China, GLONASS in Russia and GALILEO in Europe. ). Although GPS is the most widely used in the wo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/49G01C21/16
CPCG01S19/49G01C21/165
Inventor 万赟张鹏宇宗军耀余亮王青刘利朝
Owner COMAC