Method and system for displaying desired navigation performance parameters

Abstract

A method for displaying required navigation performance parameters of an aircraft is provided, comprising: calculating an estimated position of the aircraft at a current moment, a lateral RNP value and a vertical RNP value, a lateral NSE real-time value and a vertical NSE real-time value, and a lateral FTE limit value and vertical FTE limit value, displaying the aircraft icon, the cross scale representing the RNP value, and the FTE limit box representing the FTE limit value, wherein the lateral length of the FTE limit box corresponds to the lateral FTE limit value, the FTE The vertical side length corresponds to the vertical FTE limit value. There is also provided a method of replacing the crosshairs with a rectangular frame. A corresponding system for displaying required navigation performance parameters of an aircraft and an aircraft comprising the same are also disclosed. The method and system of the invention can visually monitor the RNP running state of the aircraft in three-dimensional space.

Description

technical field [0001] The invention relates to the field of aircraft navigation, in particular to a method and system for displaying required navigation performance parameters. Background technique [0002] To ensure flight safety of an aircraft such as an aircraft, many parameters of the aircraft need to be displayed to an operator of the aircraft, such as a flight crew of the aircraft. Required navigation performance (RNP) means that the aircraft can fly along any desired path within the coverage area of ​​the navigation signal, or within the capability limit of the on-board navigation equipment, or a combination of both; Navigation performance monitoring and alerting capabilities. The total system error (TSE) in the horizontal direction is less than the specified performance limit (i.e., lateral RNP value) for 95% of the flight time; the TSE in the vertical direction is less than the specified performance limit (i.e., vertical RNP value) for 99.7% of the flight time va...

AI Technical Summary

Problems solved by technology

However, NSE needs to use the algorithm of the flight management system to issue an alarm, which cannot be displayed intuitively on the display

Neither of the above two methods can display FTE and NSE on the monitor at the same time

[0004] Another way to display RNP parameters is to display FTE and NSE on the horizontal and / or vertical deviation scale bands respectively, and the NSE value is coupled to both sides of the lateral and / or vertical deviation scale bands. This method is more accurate than the previous two methods. Intuitively see the values ​​of both NSE and FTE, but this method displays NSE and FTE separately from the horizontal and vertical directions in a two-dimensional manner, and cannot intuitively monitor the flight restricted area of ​​​​the aircraft in three-dimensional space

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