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A laser radar transceiver alignment device and method

A laser radar and alignment device technology, applied in the field of laser remote sensing, can solve the problems of loss of echo light, poor real-time performance, loss of echo signal, etc., to achieve the effect of increasing the proportion of working time, preserving the signal-to-noise ratio, and reducing the environment

Active Publication Date: 2021-06-11
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

[0007] The above methods usually need to lose part of the echo light or introduce a high-repeatability switching mechanism, and often need to work time-sharing with the lidar system
The main disadvantages are: (1) loss of part of the echo signal; (2) introduction of a switching mechanism with high repeatability requirements; (3) poor real-time performance

Method used

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  • A laser radar transceiver alignment device and method
  • A laser radar transceiver alignment device and method
  • A laser radar transceiver alignment device and method

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Embodiment

[0050] Such as figure 1 As shown, a laser radar transceiver alignment device, the laser radar includes a laser emission unit 1, a receiving telescope 5 and an echo detecting unit 7;

[0051] Among them, the laser emission unit emits a pulsed laser light having a wavelength of 1064 nm. The receiving telescope is 1 m.

[0052] The transmission and receiving alignment device includes an optical axis light guiding prism 2, a optical axis monitor camera 3, a receiving optical axis light guiding prism 4, a first focal plane indicating a light source 6, and a second focal plane indicating a light source 8;

[0053] The focal length of the optical axis monitoring camera 3 is 0.25m, and the first focal surface indicates that the light source 6 transmits 1064 nm continuous laser, and the second focal plane indicates that the light source 8 transmits 1064 nm continuous laser.

[0054] The first focal plane indicates that the light source 6 and the second focal plane indicate that the light s...

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Abstract

The invention relates to a laser radar transceiver alignment device and method, which belongs to the technical field of laser remote sensing and can be used for alignment of the laser radar system transceiver optical axis. The device and method construct a set of independent transmitter-receiver mismatch measurement system through focal plane indicator light, independent area array camera and light-guiding prism and corresponding algorithms, through which the transmitter-receiver mismatch can be obtained in real time and guide the laser The pointing adjustment unit completes the laser radar system transceiver alignment.

Description

Technical field [0001] The present invention relates to a laser radar transmission and reception alignment device and method, belonging to the field of laser remote sensing, and can be used for the alignment of the laser radar system to transmit and receive optical axes. Background technique [0002] Laser radar can be used for distance detection and atmospheric detection, which is a wide range of laser applications. [0003] Laser radar typically uses the laser emission and extremely narrow field of view of extremely small hair angle, so that the alignment of the laser emission optical axis and the receiving optical axis is a key factor affecting the performance of the laser radar. [0004] In practical applications, larger receiving fields can be employed to ensure that the signal can be received even if the transmitting and receiving optical axis deviation can also be received, the larger receiving field introduces a large background light noise. [0005] The use of small rece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/481
CPCG01S7/4811
Inventor 王玉诏杨居奎杨超彭欢孙立张晨阳宋志清孙海青
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH