Foundation airglow imaging instrument used for earthquake prediction and forecasting

Abstract

The invention discloses a foundation airglow imaging instrument used for earthquake prediction and forecasting. The foundation airglow imaging instrument comprises a convergent lens group, a filtering assembly, an image rotation lens assembly and a detector assembly, wherein the convergent lens group is used for converging a large-view-field aperture light beam into a low-angle light beam and emitting the low-angle light beam to the image rotation lens assembly; the image rotation lens assembly comprises a field lens and two image rotation lens groups symmetrically arranged on a light path, the field lens receives the light beam from the convergent lens group and transmits the light to the two image rotation lens groups in sequence, and the light beam passing through the two image rotation lens groups is transmitted into the detector assembly; the filtering assembly is arranged between the image rotation lens groups; and the detector assembly is used for detecting a light beam signal. The F-P narrow-band filtering assembly adopted by the instrument is capable of filtering a 1 nm single wavelength point, thereby improving the signal to noise ratio of the whole system.

Description

technical field [0001] The invention belongs to the field of earthquake detection equipment, in particular to an imager for earthquake prediction and prediction by means of optical imaging, specifically a ground-based airglow imager for earthquake prediction and prediction. Background technique [0002] Earthquake prediction is one of the most important scientific problems in the world today. The development of modern technology and space technology has confirmed that the precursor phenomenon before earthquakes does exist, and predicts that earthquake prediction will eventually be realized. The advancing ionospheric disturbance caused before the earthquake will lead to changes in the intensity of the airglow. Through the airglow photoelectric detection technology, the changes in the ionosphere can be diagnosed and used to monitor the changes in the ionosphere in real time, so as to realize the prediction of earthquakes forecast. [0003] For airglow research, in the past, r...

AI Technical Summary

Problems solved by technology

[0003] For the study of airglow, in the past, rockets were launched and equipped with airglow photometers for detection. These methods are costly and not fast enough for real-time

In recent years, ground-based airglow imaging detection technology has been developed rapidly. For airglow radiation, it is weak radiation with a single point wavelength (such as 557.7nm and 630nm wavelength airglow), and the filter is required to have ultra-narrow-band filtering characteristics. Larger caliber, and the traditional optical filter to achieve single-wavelength ultra-narrow-band filtering is complicated, which limits the size of the optical filter and is expensive. At present, it mainly depends on imports, so it cannot meet the current high signal-to-noise ratio and high precision. Airglow Detection Requirements

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