Automatic real-time solar radio burst detection method based on image processing

Abstract

The invention discloses an automatic real-time solar radio burst detection method based on image processing. According to the method, the detection of solar radio burst is regarded as moving object detection for a solar radio spectrum image, the idea of a Gaussian mixture model is adopted to detect the moving region of the solar radio spectrum, accurate quantization is performed on the detected burst region, the burst strength, burst bandwidth and duration are extracted, and two parts, namely the automatic detection of solar radio burst and the extrication of parameter values of the solar radio burst are included. According to the invention, the parameter values of the solar radio burst are extracted automatically, the detection work of solar radio burst, which is completed manually and wholly, is completed automatically through an image processing method, so that efficiency and accuracy of parameter extraction are improved; the solar radio burst detected in real time and extracted burst parameters are provided as data for early warning of severe space weather in real time; before the severe space weather, the modern equipment system is adjusted, so that the influence brought by severe space weather is reduced as far as possible.

Description

technical field [0001] The invention belongs to the field of solar radio detection, in particular to an automatic real-time detection method for solar radio bursts based on image processing. Background technique [0002] The sun is the only star that can be observed in detail, and at the same time, the solar system is also the only star system known to mankind that has the behavior of life and reproduction. Therefore, the study of solar physics is not only the most active and important field in astronomy, but also of great significance to the study of the origin and evolution of life in the universe. The violent eruptions of the sun mainly refer to flares and coronal mass ejections (CME, Coronal Mass Ejection), which are the most violent energy release processes in the solar system. Especially CME, it throws a large amount of plasma material into the interplanetary space at a speed exceeding 1,000 km / s. [0003] The radiation and accelerated high-energy particles produced ...

AI Technical Summary

Problems solved by technology

[0007] 1. Hysteresis: The report of solar radio activity is formed every day after several hours of observation. For solar radio burst events, it is impossible to obtain relevant data at the first time, and it is impossible to achieve real-time early warning of disastrous space weather;

[0008] 2. Omission: Since each set of observation equipment produces several gigabytes of spectrum data every day, these data record 10 hours of solar activity, requiring staff to play back the video to find meaningful solar activity data

Manual detection takes a lot of time, and the short-term burst signal has the characteristics of short time and difficult to detect, and manual detection of solar activity data will be missing;

[0009] 3. Arbitrary: For artificially detected solar radio bursts, it is necessary to quantify the burst parameter values

However, the manual extraction of relevant parameter values ​​of solar radio bursts has a great correlation with the status of the staff, and the degree of detail of each staff extraction parameter may also be different.

This makes the artificial extraction of solar radio burst parameter values ​​arbitrarily large and cannot be accurately quantified, which brings a lot of inconvenience to the follow-up theoretical research.

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