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Method and system for online analysis of light curve and abnormal alarm

A technology of light curve and curve, applied in the field of time-domain astronomy, can solve the problem of online abnormal alarm system that has not been further studied

Active Publication Date: 2020-09-18
TSINGHUA UNIV
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  • Abstract
  • Description
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Problems solved by technology

At present, the generation of GWAC light curve has been studied, but the online abnormal alarm system based on light curve has not been further studied

Method used

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  • Method and system for online analysis of light curve and abnormal alarm
  • Method and system for online analysis of light curve and abnormal alarm
  • Method and system for online analysis of light curve and abnormal alarm

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] see figure 1 , the present embodiment discloses a method for online analysis of light curve and abnormal alarm, including:

[0029] S1. Obtain the light curve of the star to be analyzed, wherein the light curve is a luminance sequence composed of the luminance of the star at multiple moments in chronological order;

[0030] In this embodiment, the light curve d...

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Abstract

The invention discloses an online analysis and abnormity alarm method and an online analysis and abnormity alarm system for a light curve. Online abnormity alarm of the light curve can be realized. The method comprises the following steps: obtaining the light curve of a to-be-analyzed star; for each sample point in the light curve, calculating characteristic statistic amounts of a long time window and a short time window corresponding to the sample point, calculating a preset normalized variable value according to the characteristic statistic amounts, substituting the normalized variable value in a discrimination function to calculate a discrimination function value, judging whether the light curve needs to be matched with a series of preset template curves according to the discrimination function value, if the light curve needs to be matched with the template curves, normalizing the light curve, matching the light curve with the template curves, and calculating the difference between each normalized light curve and each template curve by using a dynamic time warping algorithm, and if a difference is determined to be smaller than a specified threshold, triggering alarm, and otherwise, not triggering the alarm.

Description

technical field [0001] The invention relates to the field of time-domain astronomy, in particular to a method and system for on-line analysis of light curve and abnormal alarm. Background technique [0002] With the development of modern observation technology, astronomy has entered the era of time-domain astronomy. This field is mainly based on high-time-resolution observations to discover and study some extreme and rare astronomical phenomena in the universe, including star explosion phenomena of different time scales such as novas, supernovae, and gamma-ray bursts, as well as exoplanet stars. Unlike traditional astronomical telescopes, which can only take images of individual locations in the sky, modern telescopes can snap images every few seconds. The images composed of these time series allow astronomers to quickly and continuously track various astronomical phenomena such as optical transient sources, gamma-ray bursts, and variable sources. Related astronomical obse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/2458G06F16/58G06F16/583
CPCG06F16/2462G06F16/583G06F16/5866
Inventor 孙延奎邱嘉铭
Owner TSINGHUA UNIV
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