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Restoring navigational performance for a navigational system

A technology of navigation system and performance, applied in navigation, surveying and navigation, radio wave measurement system and other directions, can solve the problem of satellite navigation signal aircraft flying off course and so on

Pending Publication Date: 2020-07-21
GE AVIATION SYST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, a spoofed sat nav signal could try to throw an aircraft off course

Method used

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  • Restoring navigational performance for a navigational system
  • Restoring navigational performance for a navigational system
  • Restoring navigational performance for a navigational system

Examples

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Embodiment Construction

[0014] The present disclosure relates to methods for restoring navigation performance if a navigation system has been cheated. The methods described herein involve determining a drift range between a first navigation system and a second navigation system. For exemplary purposes described herein, the first navigation system is a global navigation satellite system (GNSS) and the second navigation system is an inertial navigation system (INS). Although this description is primarily directed to use on an aircraft, it is applicable to any vehicle or environment, including on land or at sea, that will utilize a navigation system that may be subject to spoofing attacks.

[0015] figure 1 Satellite 10 is shown in orbit around Earth 12 . Satellite 10 transmits satellite signal 14 . Satellite 10 may be any type of satellite including, but not limited to, geostationary satellites, Galileo satellites, COMPASS MEO satellites, GPS satellites, GLONASS satellites, NAVIC satellites, QZSS sa...

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Abstract

A method of restoring navigational performance for a navigational system is disclosed, the method comprising receiving, by a first navigational system and a second navigational system, a collection ofdata points to establish a real-time navigational route for an aircraft, comparing navigational performance values and / or drift ranges and establishing a new navigational route based on the collection of data points.

Description

technical field [0001] The present disclosure relates to a method of restoring navigation performance of a mobile vehicle having a navigation system in response to a spoof signal, and more particularly, to a method of establishing a new navigation route. Background technique [0002] Typically, satellite-based communication and navigation systems provide position and time information for nautical, aviation, locomotive, and motor vessels. Satellite communication and navigation systems can appear anywhere on or near Earth where the line of sight between a ship and one or more satellites is not compromised. Satellite communication and navigation systems have a variety of applications on land, at sea and in the air. [0003] Aircraft rely on satellite communications for navigation and information (eg, weather) systems. Spoofing occurs when a signal is sent to an aircraft to intentionally provide false information to the aircraft's navigation and information systems. For examp...

Claims

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Application Information

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IPC IPC(8): G01S19/21G01S19/47G01C21/16
CPCG01S19/215G01S19/47G01C21/165G01C23/00G01S19/49G01S19/396G01C21/3415
Inventor 斯特凡·施温特
Owner GE AVIATION SYST LTD
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