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Edge filling method for monitoring data of plane airborne equipment

A technology for monitoring data and airborne equipment, applied to measuring devices, force/torque/power measuring instruments, instruments, etc., can solve the problem of not maintaining the edge characteristics of data well, and achieve the effect of maintaining edge characteristics and realizing reconstruction

Inactive Publication Date: 2019-01-18
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

The data restored based on these methods cannot well maintain the original edge characteristics of the data
[0004] On this basis, an edge-preserving filtering method is proposed to suppress random noise while protecting the signal and the edge. The edge-preserving data interpolation method is edge-preserving and anti-aliasing, and can effectively reconstruct irregular data, but it is only used for data Noise removal in filtering

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  • Edge filling method for monitoring data of plane airborne equipment
  • Edge filling method for monitoring data of plane airborne equipment
  • Edge filling method for monitoring data of plane airborne equipment

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Step 1: y(i) is the brake pressure signal of the left inner wheel of a certain type of aircraft during a flight, where i=1,...N, and the corresponding spatial coordinates are x(i), where i=1,... N, assuming that the length of the processing window is L, that is, each signal segment contains L known signal sampling points, and for the missing sampling point to be recovered whose spatial coordinate is z, the nearest known sampling point behind it is the Ith, A total of L-1 signal segments contain the missing sampling point, and there is an adjacent signal segment before and after the missing sampling point. Among the L+1 signal segments, the signal data contained in the lth signal segment is :

[0029] [y(I-L+l-1),...,y(I+l-2)]l=1,....L+1. (1)

[0030] For the l-th signal segment, the data fitting of the signal segment is realized by an m-order p...

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Abstract

The invention provides an edge filling method for monitoring data of plane airborne equipment and relates to the field of aircraft data monitoring. The method comprises the following steps: for signalsegments of to-be-recovered missed sampling points, implementing data fitting of the signal segments through an m-order polynomial, and solving a minimized fitting error, wherein the signal segment corresponding to the minimal fitting error is used for estimating a to-be-interpolated sampling point with a spatial coordinate of z, and thus all to-be-interpolated missed sampling points are estimated. In the edge filling method for monitoring data of the plane airborne equipment, the polynomial is used for fitting the signal segments, the signal segment with the minimal fitting error is used forestimating the missed sampling point to achieve the purpose of edge preservation. The edge filling method has the characteristics of edge preservation and alias frequency resistance and capability ofperforming irregular data reconstruction, the reconstruction of irregular airborne data can be effectively implemented and the edge characteristics of original data can be kept as well.

Description

technical field [0001] The invention relates to the field of aircraft data monitoring, in particular to a data edge filling method. Background technique [0002] During flight, airborne equipment and sensors collect flight parameters and monitor conditions often face complex application environments and working conditions, and are easily affected by various factors. At the same time, in the process of signal transmission, there are still some unavoidable problems, such as data packet loss, data delay, data transmission channel noise and so on. These factors may lead to bias in collected data and bias in actual value. Therefore, on the basis of improving data collection and transmission methods, it is necessary to study data preprocessing methods to ensure the accuracy of data collection. [0003] Due to the influence of external environment, such as temperature, humidity, electromagnetic interference, interference and transmission, as a complete series of airborne equipmen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/28
CPCG01L5/28
Inventor 陆艳洪翟正军张梦盛帅鹏
Owner NORTHWESTERN POLYTECHNICAL UNIV
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