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Approach section flight technology error estimation method based on multi-source information fusion

A technology of flight technical error and multi-source information fusion, which is applied in the field of flight management, can solve the problem of not being able to meet the real-time estimation of PBN navigation flight technical error

Inactive Publication Date: 2020-05-12
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

However, this method cannot give the estimated value of the specific flight technical error according to the specific flight conditions, and cannot meet the requirements of real-time estimation of the flight technical error in PBN navigation.

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  • Approach section flight technology error estimation method based on multi-source information fusion
  • Approach section flight technology error estimation method based on multi-source information fusion
  • Approach section flight technology error estimation method based on multi-source information fusion

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.

[0050] Such as figure 1 As shown, the present invention provides a method for estimating technical error of approach flight based on multi-source information fusion. Information fusion based on the framework of federated filtering makes full use of the available navigation source information in the approach and landing segment to estimate the flight technical error in real time to ensure that the flight control computer can monitor in real time whether the flight technical error meets the RNP requirements of the flight segment. Provide strong protection. Its specific implementation process is as follows:

[0051] Step 1: Obtain the measurement position information of the available navigation sources in the current approach segment, and perform time registration and spatia...

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Abstract

The invention provides an approach section flight technology error estimation method based on multi-source information fusion. According to the method, the measurement information of main navigation sources of an aircraft in a current approach section is acquired, wherein the main navigation sources includes an inertial navigation system, a satellite navigation system and an instrument landing system; time registration and space registration are performed on the acquired measurement information; information fusion is carried out by taking federated filtering as a framework, different filteringmethods are selected according to the characteristics of the different navigation sources, and position information with relatively high accuracy is obtained; sensor fault detection is carried out, isolation processing is carried out on fault signals, and the integrity of signals is guaranteed; and finally, vector calculation is conducted on the due flight path of the aircraft and the position information of the aircraft obtained through filtering according to the position information of the aircraft, so that a flight technology error estimation value is obtained. With the method of the invention adopted, flight technology error real-time estimation can be realized; the precision of an estimation result is higher, and the precise approaching operation of the aircraft can be ensured.

Description

technical field [0001] The invention belongs to the technical field of flight management, and in particular relates to a method for estimating technical error of an approach flight based on multi-source information fusion. Background technique [0002] With the improvement of aircraft airborne equipment capabilities and the continuous development of advanced technologies such as satellite navigation, the International Civil Aviation Organization (ICAO) proposed on the basis of integrating the operational practices and technical standards of regional navigation (RNAV) and required performance navigation (RNP) of various countries. A new concept of operation - performance-based navigation (PBN), that is, under the corresponding navigation infrastructure conditions, when the aircraft flies in the designated airspace or along the route or instrument flight procedure, the accuracy, integrity and availability of the navigation system , continuity and functional performance require...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/47G01S19/45G01C21/16G01C21/00
CPCG01S19/47G01S19/45G01C21/165G01C21/005
Inventor 李广文张哲黄彭辉徐云轩尹芝钰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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