A ground-based airglow imager for earthquake prediction

Abstract

The invention discloses a ground-based airglow imager for earthquake prediction and forecasting, which includes a converging lens group, a filter assembly, an image transfer mirror assembly and a detector assembly, wherein: the converging lens group is used for large field of view The aperture light beam is converged into a small-angle light beam and emitted to the relay mirror assembly; the relay mirror assembly includes a field mirror and a group of two relay mirror groups symmetrically arranged on the optical path, wherein the field mirror receives the The beams of the above-mentioned converging lens groups are injected into the two relay mirror groups in sequence, and the beams passing through the two relay mirror groups are injected into the detector assembly; the filter assembly is placed in the relay Between the mirror groups; the detector assembly is used to detect beam signals. The F-P narrow-band filter component adopted in the present invention can realize 1nm single-wavelength point filtering, and improves the signal-to-noise ratio of the entire 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

Images