A solar photometer for measuring the optical properties of cirrus clouds

Abstract

The invention discloses a sun photometer measuring cirrus cloud optical characteristics; a host industrial control computer sends a measuring order, determines the initial position, and starts a sun visual locus tracking order; a program calculates horizontal and pitching motor steps needed to turn to the sun orientation, and sends the data to a lower computer embedded control system; the lower computer embedded control system controls a motor-driven system to rotate the horizontal and pitching motors, thus enabling a probe to turn to the current sun orientation; when the sun image appears ina CCD probe visual field, CCD image fine tracking is started; the sun lights pass the tracking imaging optical system, and irradiate on the target surface center of the CCD probe; the sun images in the visual field are gathered and stored, and sent to the host industrial control computer; the host industrial control computer analyzes the gathered images, thus determining whether the sun is finelytracked or not. The sun photometer employs the image tracking technology to replace the four-quadrant tracking, thus realizing all-weather tracking, and realizing large field of view tracking.

Description

technical field The invention relates to the technical field of measuring instruments for atmospheric science experiments, in particular to a sun photometer for measuring the optical properties of cirrus clouds. Background technique Cirrus clouds, also known as ice clouds, are one of the most common cloud types in the world, covering about 20%-30% of the earth's surface. Atmospheric infrared background radiation has an important influence, so the detection of cirrus clouds is of great significance. At present, the main ground-based detection method is lidar. Because cirrus clouds are located at a high position and are usually optically thin, it brings great difficulties to detection and research. There are few observation data of cirrus clouds. The understanding and understanding of cirrus clouds requires the development of new detection means and methods to obtain the optical properties of cirrus clouds. Due to the large size of ice crystal particles in cirrus clouds and...

AI Technical Summary

Problems solved by technology

At present, the main ground-based detection method is LiDAR. Due to the high position of cirrus clouds and usually optically thin, it brings great difficulties to detection and research. There are few observation data of cirrus clouds. The understanding and understanding of cirrus clouds requires the development of new detection means and methods to obtain the optical properties of cirrus clouds

Images