Double-shaft laser remote sensing instrument ground detection and calibration system and detection and calibration method

Abstract

The invention provides a double-shaft laser remote sensing instrument ground detection and calibration system, which comprises a simulation echo generator, a two-dimensional moving platform, a heavy-caliber long-focus collimator and a light beam quality analyzer. One side of the heavy-caliber long-focus collimator is provided with a beam splitter and a pyramid prism, and the other side of the heavy-caliber long-focus collimator is provided with a total-reflection mirror. The simulation echo generator is composed of a photolectric transducer, a time delay unit, an optical fiber output laser, optical fiber and an electronic control optical attenuator. The optical fiber output laser is connected with one end of the optical fiber, and the other end of the optical fiber is located on the other side of the heavy-caliber long-focus collimator. A port of the other end of the optical fiber is located on a focal plane of the heavy-caliber long-focus collimator and fixed on the two-dimensional moving platform. The detection and calibration system is capable of obtaining far-field light beam quality distribution and detectivity of the detected active and passive laser remote sensing instrument and is capable of obtaining geometric construction factors of the detected active and passive laser remote sensing instrument.

Description

technical field [0001] The invention belongs to the field of laser active remote sensing detection, relates to a ground detection and calibration system of a dual-axis laser remote sensing instrument, and also relates to the detection of system parameters of active and passive laser remote sensing instruments by the system-detection ability, far-field beam quality distribution, and system geometric structure factor and calibration method. Background technique [0002] Since the birth of laser, laser science and technology have developed rapidly. As an active remote sensing detection technology, laser remote sensing instrument has been widely used in research fields such as planetary survey, air target detection, laser atmospheric transmission, global climate prediction, aerosol radiation effect and atmospheric environment. The working principle of the laser remote sensing system is that the laser beam pulse sent by the laser enters the atmosphere, and the telescope receives...

AI Technical Summary

Problems solved by technology

Among the parameters that need to be precisely calibrated and tested, except for the parameters related to the laser characteristics, there is a unified test method, and there is no standard commercial device or related device for other system parameters. Calibration of performance brings trouble

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