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Method and system for displaying RNP (Required Navigation Performance) parameters

A technology with required navigation performance and parameters, applied in the field of aircraft navigation, which can solve the problems such as the inability to visually monitor the flight restricted area of ​​the aircraft, the inability to display FTE and NSE on the display at the same time, and the failure of the display to display intuitively.

Active Publication Date: 2015-11-18
COMAC +1
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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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  • Method and system for displaying RNP (Required Navigation Performance) parameters
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  • Method and system for displaying RNP (Required Navigation Performance) parameters

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Embodiment Construction

[0032] When calculating the total systematic error (TSE) in the RNP specification, various calculations can be used. In one embodiment of the present disclosure, TSE is considered to be approximately equivalent to the vector sum of Navigation System Error (NSE) and Flight Technical Error (FTE), namely:

[0033] TSE → = NSE → + FTE → (Formula 1)

[0034] Transforming Equation 1, we can get:

[0035] FTE → = TSE → + NSE → (Formula 2)

[0036] In one embodiment, FTE and NSE can be determined using any method known in the art. For the sake of brevity, the specific calculation methods of FTE and NSE will not be introduced in this paper.

[0037] Please refer to figure 1 and figure 2 , figure 1 and figure 2 An ...

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Abstract

The invention provides a method for displaying RNP (Required Navigation Performance) parameters of an aircraft. The method comprises the following steps: computing the estimated position, transverse RNP value and vertical RNP value, transverse NSE (Navigation System Error) real-time value and vertical NSE real-time value as well as transverse FTE (Flight Technical Error) limit value and vertical FTE limit value of the aircraft at the current time, and displaying an aircraft icon, a cross ruler for representing the RNP values as well as an FTE limit frame for representing the FTE limit values, wherein the transverse side length of the FTE limit frame corresponds to the transverse FTE limit value, and the vertical side length of the FTE limit frame corresponds to the vertical FTE limit value. The invention also provides a method for replacing the cross ruler by using a rectangular frame. The invention also discloses a corresponding system for displaying the RNP parameters of the aircraft as well as the aircraft comprising the system. The method and system provided by the invention can be used for visually monitoring the RNP running state of the aircraft in the three-dimensional space.

Description

technical field [0001] The present invention relates to the field of aircraft navigation, and in particular to a method and system for displaying required navigation performance parameters. Background technique [0002] In order to ensure the flight safety of an aircraft, such as an aircraft, many parameters of the aircraft need to be displayed to the operator of the aircraft, such as the flight crew of the aircraft. Required Navigation Performance (RNP) means that the aircraft can fly along any desired path within the coverage of the navigation signal, or within the capability limits of the airborne navigation equipment, or a combination of the two; and Navigation performance monitoring and alerting capabilities. The total systematic error (TSE) in the horizontal direction is less than the specified performance limit (ie, the lateral RNP value) for 95% of the flight time; the TSE in the vertical direction is less than the specified performance limit (ie, the vertical RNP v...

Claims

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Application Information

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IPC IPC(8): B64D47/00
Inventor 郑智明叶军晖余亮赵春玲严林芳张克志孟繁栋
Owner COMAC
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