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Non-blind area pulse coherent wind lidar system based on multi-aperture transceiving

A technology of coherent wind measurement and laser radar, which is applied in the direction of radio wave measurement system, measurement device, electromagnetic wave reradiation, etc., can solve problems such as measurement blind spots, achieve the effects of avoiding measurement blind spots, strengthening signal strength, and improving comprehensive performance

Active Publication Date: 2021-04-23
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL +1
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Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to be able to solve the measurement blind area problem existing in the pulse coherent wind laser radar system

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  • Non-blind area pulse coherent wind lidar system based on multi-aperture transceiving
  • Non-blind area pulse coherent wind lidar system based on multi-aperture transceiving
  • Non-blind area pulse coherent wind lidar system based on multi-aperture transceiving

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Embodiment Construction

[0018] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. Wherein, similar elements in different implementations adopt associated similar element numbers. In the following implementation manners, many details are described for better understanding of the present application. However, those skilled in the art can readily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the application are not shown or described in the description, this is to avoid the core part of the application being overwhelmed by too many descriptions, and for those skilled in the art, it is necessary to describe these operations in detail Relevant operations are not necessary, and they can fully understand the relevant operations according to the description in the specification and genera...

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Abstract

The invention discloses a non-blind area pulse coherent wind lidar system based on multi-aperture transceiving, which is characterized in that an optical transceiving antenna comprises a plurality of apertures used for transmitting laser pulse signals to the atmosphere and / or receiving backscattered echo optical signals reflected by the atmosphere, and at least one aperture does not transmit the laser pulse signals, but only receives the backscattered echo optical signals. Due to the fact that the backscattered echo optical signals received by the aperture does not contain an interference scattering optical signal, so that the backscattered echo optical signals received by the aperture only receiving the backscattered echo optical signals are processed within the pulse width time of the laser pulse signal transmitting process, the measurement blind area of the backscattered echo optical signals caused by the interference scattered light signals is avoided, and the backscattered echo optical signals received by all apertures are superposed and then processed within the time after the laser pulse signals are transmitted, so that the signal intensity of the backscattered echo optical signals is enhanced, and the comprehensive performance of measurement is improved.

Description

technical field [0001] The invention relates to the technical field of coherent wind-measuring laser radar, in particular to a non-blind zone pulse coherent wind-measuring laser radar system based on multi-aperture transceiver. Background technique [0002] Accurate atmospheric wind field detection is of great significance for numerical weather forecasting, climate model improvement, military environment forecasting, biochemical gas monitoring, airport windshear warning and other application projects. Coherent wind lidar is currently one of the best ways to achieve all-weather, three-dimensional atmospheric wind field measurement. It has high spatial resolution, high time resolution, high data acquisition rate, anti-interference, small size, and low deployment requirements. Advantages, it has become one of the mainstream wind measurement equipment in wind power, aviation and other fields. [0003] Due to many factors such as surface friction and terrain, the atmospheric win...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/95G01S7/484G01S7/4865
CPCG01S17/95G01S7/484G01S7/4865Y02A90/10
Inventor 禹智斌白杰赵明光刘冬陈乐
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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