Laser wind finding radar pointing self-stabilizing double-rotating mirror scanning system

A wind-measuring radar and scanning system technology, applied in the field of laser wind-measuring radar pointing self-stabilizing double-rotating mirror scanning system, can solve the problem of increasing load volume, weight, power consumption and equipment complexity, and increasing the amount of downlink data of laser wind-measuring radar , limit the application range of laser wind radar and other issues, to achieve the effect of reducing system weight and complexity, reducing information ambiguity, and improving matching degree

Pending Publication Date: 2019-11-12
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The installation of a gyro-stabilized platform will greatly increase the volume, weight, power consumption and equipment complexity of the load, which limits the application range of the laser wind radar on the moving platform
The later azimuth correction processing method will not only increase the amount of downlink data of LiDAR, but also affect the timeliness of signal processing and display.

Method used

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  • Laser wind finding radar pointing self-stabilizing double-rotating mirror scanning system
  • Laser wind finding radar pointing self-stabilizing double-rotating mirror scanning system
  • Laser wind finding radar pointing self-stabilizing double-rotating mirror scanning system

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Embodiment Construction

[0034] The patent of the present invention will be further described below in conjunction with the accompanying drawings and examples of implementation, but this should not limit the scope of protection of the patent of the present invention. Such as figure 1 As shown, the attitude change of the motion platform (pitch, roll, deflection, etc.) makes the motion trajectory 102 deviate from the predetermined trajectory 101, and the laser wind radar motion point 103 also deviates from the predetermined point 104. Using the solution of the present invention, the scanning point can be kept stable , so as to provide timely and accurate angle information for the lidar wind measurement application on the motion platform.

[0035] Such as figure 2 As shown, the system principle is a closed-loop automatic control technology based on feedback theory. The attitude measurement unit 201 provides the attitude information of the motion platform, and the control unit 202 calculates the predete...

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Abstract

The invention discloses a laser wind finding radar pointing self-stabilizing double-rotating mirror scanning system, comprising an attitude measurement unit, a control unit and a double-rotating mirror scanning unit; the attitude of a moving platform is measured in real time by using the attitude measurement unit, the pointing of the double-rotating mirror scanning unit is compensated and corrected in real time by the control unit, and thus the influence of the attitude change of the moving platform on the pointing of a laser wind finding radar can be eliminated. According to the scheme of theinvention, the pointing of the laser wind finding radar is compensated and corrected in real time by using the attitude information, the step of installing a gyroscope-stabilized platform is saved, the step of attitude correction in a subsequent signal inversion process is simplified, other resources such as the platform load and space are saved, and thus the laser wind finding radar can be moreconveniently applied to the moving platform.

Description

technical field [0001] The patent of the present invention relates to a wind laser radar, especially a wind laser radar pointing self-stabilizing scanning system mounted on a moving platform, specifically a wind laser radar pointing self-stabilizing double-rotating mirror scanning system. Background technique [0002] When the laser wind radar mounted on the moving platform performs scanning and detection, its laser pointing will shake with the attitude changes of the moving platform (pitch, roll, deflection, etc.) during the single-direction measurement integration process, resulting in blurred measurement target information. As a result, the integration effect is poor, which affects the signal-to-noise ratio of the laser wind radar. In order to eliminate the influence of the attitude change of the moving platform on the pointing of the laser wind radar, it is generally necessary to install the laser wind radar on the gyro-stabilized platform, or perform attitude and orient...

Claims

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Application Information

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IPC IPC(8): G01S7/481G01S17/95
CPCG01S7/4817G01S17/95Y02A90/10
Inventor 朱小磊刘恒竹孝鹏原禄城刘菲菲刘继桥毕德仓陈卫标
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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