A kind of all-fiber laser radar with multi-shot and single-receive telescope array

Abstract

The embodiment of the invention discloses an all-fiber laser radar for a multi-transmitting single-receiving telescope array, and the radar comprises a light source module, a light-splitting module, a transmitting and receiving telescope module, and a collection module. A laser beam is divided into two beams, wherein one beam serves a reference calibration beam, and the other beam serves as signal light interacting with the atmosphere. The signal light is transmitted to a telescope array for transmitting, and a telescope receives an atmosphere echo single after the signal light interacts with the atmosphere. Moreover, the radar carries out the collection of the atmosphere echo signal and the reference calibration beam. According to the technical scheme of the invention, the radar is stable in system, is compact in structure, employs all-fiber connection, employs the laser telescope array, improves the laser emission power and the detection SNR, achieves the far detection, improves the time resolution, spatial resolution of a laser radar, and improves the detection precision of the laser radar.

Description

technical field [0001] The invention relates to the field of laser radar, in particular to an all-fiber laser radar of a multi-shot and single-receive telescope array. Background technique [0002] With the development of optical technology, lidar has gradually replaced traditional radar due to its advantages such as good directionality, high time and space resolution, high precision, and non-contact measurement, and is widely used in wind measurement, speed measurement, imaging, pollutants, etc. It has become a leader in the field of radar in the fields of monitoring, temperature measurement, and detection of aerosol optical characteristics. [0003] Lidar is a radar system that emits laser beams to detect characteristic quantities such as the position and speed of targets. It is mainly composed of laser transmitters, optical receivers, turntables, and information processing systems. By transmitting a detection signal (laser beam) to the target, and then comparing the rece...

AI Technical Summary

Problems solved by technology

In the existing technology, due to the influence of nonlinear effects (such as stimulated Brillouin scattering), the output power of lasers is limited, and the average power of commercial lasers is only on the order of tens of watts, which is far from achieving atmospheric detection. The transmit power requirement under the high precision requirement

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