Medium-frequency-agile all-fiber coherent wind lidar system

Abstract

The invention discloses a medium-frequency-agile all-fiber coherent wind lidar system. A microcontroller module in a tunable fiber laser controls frequencies of output laser light of a first light source and / or a second light source to achieve agility of the frequencies of medium frequency signals. The medium-frequency-agile all-fiber coherent wind lidar system has the advantages that the system can be for high purposes in complex electromagnetic environments, on one hand, other electronic equipment being operated in medium-frequency bands can be prevented from interfering normal operation of a lidar by tuning the frequencies of the medium-frequency signals of the lidar, so that anti-electromagnetic interference or destruction capability of the lidar system is improved; on the other hand, when the operating medium-frequency signals of the lidar and operating frequency bands of the surrounding other equipment are in interference, the frequencies of the medium-frequency signals of the lidar can be tuned to prevent the lidar from interfering or destructing normal operation of the other electronic equipment when the lidar is in normal operation.

Description

technical field [0001] The invention relates to the field of all-fiber coherent wind-measuring laser radar, in particular to an all-fiber coherent wind-measuring laser radar system with intermediate frequency agility. Background technique [0002] In the remote sensing of regional atmospheric wind speed, pulse coherent lidar has the characteristics of high precision and high temporal and spatial resolution, and is widely used in the measurement of atmospheric wind profile, wind shear warning, and detection of aircraft wake. It is of great significance in aerospace, military and other fields. The all-fiber pulse coherent wind lidar has a good application prospect and is worthy of in-depth research from the aspects of theory, technology and experimental analysis. [0003] The research on the theory of coherent lidar started in the 1960s and was established by J.A.L. Thomoson and his collaborators with the support of NASA and NOAA. In 1968, with the support of NASA, Al Jelalia...

AI Technical Summary

Problems solved by technology

In some special electromagnetic environments, on the one hand, when radio stations, etc. deliberately interfere with these bands, it may cause the lidar to not work normally; , it is necessary to adjust the IF signal of the lidar, which is difficult to achieve in the traditional all-fiber coherent lidar

Images