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Peak noise processing method

A technology of spike noise, processing method, applied in the field of optical metrology

Active Publication Date: 2020-06-09
西安应用光学研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is: how to provide a signal processing method for peak noise in view of the deficiencies of existing data processing methods

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Embodiment

[0138] In order to further explain the technical solution of the present invention, the present invention will be described in detail below in conjunction with a specific embodiment. After the computer / single-chip microcomputer is powered on, the present embodiment starts to execute the spike noise processing method, which includes the following steps:

[0139] The first step is to calculate the limited slope k

[0140] Calculate the limited slope k according to formula (1),

[0141]

[0142] Among them, ΔT is the time interval between two adjacent sampling sequences in the initial data; M is an estimated value of the maximum instantaneous energy increment of the signal, and the physical meaning of M is that the measured signal or target is within the time interval of ΔT, The value that increases or decreases at the fastest speed; the method of obtaining the M value is introduced as follows: If the physical characteristics of the measured signal or target are relatively cle...

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Abstract

The invention belongs to the technical field of optical metering, and particularly relates to a peak noise processing method which comprises the following steps: aiming at the characteristic difference of peak noise and signals, effectively distinguishing the peak noise and the signals by utilizing the difference of change rates in the sampling process of the peak noise and the signals and using aprocessing method of a limited slope, and giving a calculation method and a value range of the limited slope in combination with working experience; after the peak noise processing method disclosed by the invention is used for filtering the peak noise, the result is further linearly corrected, and the reliability and accuracy of the algorithm are improved. According to the method, the problem that peak noise is difficult to effectively process in the existing data processing technology is solved, the filtering method taking the limited slope as the criterion is provided for the first time, the calculation principle, the calculation method and the reasonable range of the limited slope are given, and the method has wide application prospects in the fields of one-dimensional data, digital image processing and the like.

Description

technical field [0001] The invention belongs to the technical field of optical metrology, and in particular relates to a spike noise processing method. Background technique [0002] In data processing, a type of flicker interference with short duration and high relative intensity is often encountered. If the signal with the above flicker interference is plotted in the "amplitude-time" coordinate system, the flicker interference often appears as The isolated thin and tall spikes are called "spike noise". If the signal of interest is an object in a two-dimensional image, spike noise appears as flickering dots in the image plane. [0003] The generation of spike noise may be caused by the defect of the detector, it may be caused by the electromagnetic interference of the surrounding environment or its own circuit system, it may be caused by the short-term strong interference released by the enemy with the intention to make us lose track of the target, it may be caused by the p...

Claims

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Application Information

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IPC IPC(8): G06F17/10
CPCG06F17/10
Inventor 俞兵韩占锁曹锋尤越罗蓓蓓秦艳
Owner 西安应用光学研究所