Coaxial optical system for measuring cloud height based on micro pulse laser radar

Abstract

The invention discloses a coaxial optical system for measuring cloud height based on a micro pulse laser radar, which comprises an outgoing light source, a collimating mirror, a receiving reflecting mirror, a main transmitting and receiving lens, a small aperture diaphragm, a filter and a photodetector. The receiving reflecting mirror is inclined and placed at 45 degrees, and the receiving reflecting mirror is provided with a transmission region and a reflection region; emergent light emitted by the outgoing light source is irradiated to the transmission region through the collimating mirror and the small aperture diaphragm; the emergent light is transmitted to the main transmitting and receiving lens via the transmission region, and the main transmitting and receiving lens irradiates theemergent light to cloud formation in the air; the emergent light is irradiated to the cloud formation to generate mie scattering; the main transmitting and receiving lens receives an echo signal reflected by the cloud formation; the echo signal is reflected to the filter for filtering through the reflection region and is incident to the photodetector, thereby improving the measurement precision ofthe laser radar optical system effectively.

Description

technical field [0001] The invention relates to the technical field of weather detection, in particular to a coaxial optical system for measuring cloud height based on micro-pulse laser radar. Background technique [0002] Cloud height is the vertical distance from the cloud base to the ground, and is the main content of cloud physical characteristics research. It plays an important role in modern military operations, such as reconnaissance and early warning, air combat, and airborne vertical landing. Therefore, obtaining cloud base height information has become an important aspect of cloud physics research and military meteorological support. [0003] Under the current development requirements of the automation of meteorological element observation, it has become a trend to use ceilometers with a high degree of automation and continuous measurement to replace manual visual observation. At present, the commonly used automatic cloud base height measurement methods include la...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a coaxial optical system based on micro-pulse laser radar for cloud height measurement, which solves the problems of inaccurate cloud height measurement results and greater environmental influence

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