Aurora activity monitoring system

Abstract

The invention relates to an aurora monitoring system. The aurora monitoring system comprises a fish-eye lens for aurora full-sky imaging, a low-light industrial camera for converting the aurora full-sky imaging into an aurora analog video signal, a camera controller for controlling the low-light industrial camera, and a video encoder for converting the aurora analog video signal into a digital video and providing the outside with an online video streaming function by connecting the digital video with a network, wherein the fish-eye lens is installed at the front end of the low-light industrial camera, the low-light industrial camera is connected with the video encoder through a bayonet nut connector (BNC) cable, and the camera controller is electrically connected with the low-light industrial camera. According to the aurora monitoring system, good aurora imaging is achieved under an extreme weak light condition, the online video streaming function can be provided, automatic unattended observation is achieved, and the aurora monitoring system has the advantages of being convenient to install and operate, low in cost, good in imaging quality, and capable of performing on-line video streaming output, timing image capture, and meeting requirements of aurora activity real-time monitoring.

Description

technical field [0001] The invention relates to the technical field of environmental data, in particular to an aurora activity monitoring system. Background technique [0002] Aurora is an atmospheric luminescence phenomenon in the polar region produced by the interaction of solar wind plasma generated by solar activities and the earth's atmosphere. It is an important indicator of disastrous space weather activities that affect the operation of artificial satellites, space stations and the safety of human space activities. important target audience of the research. The sun-earth system on which human beings depend, along with the activities of the sun, can monitor the changes in the space environment such as changes in the geomagnetic field and ionospheric disturbances in earth space through special instruments and equipment, and the aurora is the only high-altitude atmospheric physics that can be seen by the naked eye. The phenomenon has long been paid attention to in the ...

AI Technical Summary

Problems solved by technology

[0007] 1. The camera itself is bulky and needs to be installed outdoors or under a special transparent cover, with little mobility;

[0008] 2. The adjustment of the controller's gain, sensitivity and number of superimposed frames needs to be done manually, and all the above parameters start from the minimum value before each observation, and gradually adjust to the appropriate imaging quality, and restore each parameter to the minimum after the observation value, the adjustment process takes a long time

In each observation process, after the parameters are relatively fixed, the ideal observation of weak aurora and strong aurora cannot be realized at the same time for the strong dynamic range during the auroral activity;

[0009] 3. Light-controlled shutdown and timing shutdown cannot be achieved. Someone must be on duty during the observation process to avoid fatal damage to the camera due to strong light after sunrise;

[0010] 4. Video digitization is difficult. Although the video signal after the time base corrector can be introduced to the computer installed with the video capture card to regularly collect digital images, it is difficult to synchronize the time on the clock generator with the time on the computer, resulting in image There is a discrepancy between the above time and the file generation time;

[0011] 5. The video image resolution is not high, and the maximum resolution of video digital output is only 320×240 pixels;

[0012] 6. The online real-time video streaming function cannot be realized

[0014] 1. The goal of monochromatic auroral imaging is to achieve absolute measurement on the characteristic spectral line of the aurora. For such equipment installed on site, it is necessary to regularly calibrate the intensity in the optical laboratory. For equipment with such a complex system structure, large volume and heavy weight It is difficult to transport back to the domestic laboratory for calibration and the transportation cost is high;

[0015] 2. The system cost and maintenance cost are high. The finished imaging system of this technology generally sells for 1 to 2 million yuan. The main difference is whether to use EMCCD camera and wheel system

The problem is that the cable may have to go through the wall or go outside. For a certain length of cable, the reasonable layout of the aurora imager and the acquisition computer needs to be planned in advance. Generally, the installation of the entire system needs to be specially designed after the observation cabin ;

[0017] 4. The online real-time video streaming function of the network cannot be realized. The size of the aurora image file generated by this technology is generally 1-4MB, and the time resolution is 2-10 seconds. Under the network bandwidth conditions of the existing north-south stations, it cannot Realize the real-time transmission of all image files to the domestic data processing center, let alone realize the network real-time video streaming function

Images