Front scanning mirror system for measuring atmospheric wind field of upper layer of foundation

Abstract

The invention provides a front scanning mirror system for measuring an atmospheric wind field of a foundation upper layer. The front scanning mirror system mainly aims at overcoming the defects that an existing front scanning mirror for measuring the atmospheric wind field of the foundation upper layer is complex in structure, large in scanning motion range, large in weight, difficult to be subjected to waterproof sealing to adapt to outdoor measurement and the like. The front scanning mirror system comprises a reflecting mirror, a one-dimensional linear displacement platform, a rotary platform, a rotary protective cover and a rotary protective cover, the rotary platform drives the reflector to rotate in the axial direction of the main light path through the one-dimensional linear displacement platform, and the rotary protection cover is used for protecting the rotary platform and the environment of the main light path from being polluted by the external environment. The rotary protection cover comprises a protection cover body, a zenith protection window and a side protection window, the protection cover body is arranged on the rotating platform, the side protection window is arranged on a reflection light path of the reflecting mirror, light signals collected by the side protection window are reflected to the main light path through the reflecting mirror, and the main light path transmits the collected light signals to the foundation upper layer atmosphere wind field measuring system.

Description

technical field [0001] The invention belongs to the field of wind field measurement equipment, and in particular relates to a pre-scanning mirror system used for the measurement of ground upper atmospheric wind field. Background technique [0002] The principle of the ground-based interferometer to measure the wind field in the middle and upper atmosphere is: by observing the emission spectrum lines of the middle and upper atmosphere components, the Doppler frequency shift is used to invert the velocity information of the atmosphere. The components of the earth's atmosphere absorb the solar electromagnetic radiation energy directly or indirectly and are excited to a higher energy level, and when they transition from a higher energy level to a lower energy level, they release photons of a certain frequency, thus forming weak light radiation. Energy level transitions correspond to spectral lines of different wavelengths. When these atmospheric components move with the atmosph...

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Problems solved by technology

[0012] The purpose of the present invention is to propose a method for the foundation high-level atmospheric wind field to solve the defects of the existing foundation high-level atmospheric wind field measurement, such as complex structure, large scanning range, heavy weight, and difficulty in waterproof sealing to adapt to outdoor measurement. The front scanning mirror system for measurement is a multi-directional waterproof scanning mirror system for the upper atmospheric wind field of the foundation based on a rotary platform and a one-dimensional linear displacement platform. It has the characteristics of simple and reliable structure, small volume and weight, and is easy to realize waterproof sealing.

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