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Data processing method, device and system for wind measurement laser radar, and storage medium

A technology of wind measurement lidar and data processing, which is applied in the field of radar, can solve the problems of reduced accuracy of wind speed measurement results, achieve the effect of improving data integrity and measurement height range, reducing false alarms, and improving accuracy

Active Publication Date: 2018-04-20
NANJING MOVELASER TECH CO LTD
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Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a data processing method, device, system and storage medium of wind laser radar, which can solve the problem that the accuracy of wind speed measurement results is significantly reduced under low signal-to-noise ratio in the prior art

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  • Data processing method, device and system for wind measurement laser radar, and storage medium
  • Data processing method, device and system for wind measurement laser radar, and storage medium
  • Data processing method, device and system for wind measurement laser radar, and storage medium

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no. 1 example

[0022] Such as figure 1 As shown, the first embodiment of the data processing of the wind-measuring lidar according to the present invention includes:

[0023] S1: Obtain the power spectrum of multiple signal sequences scanned and collected by the wind-measuring lidar in a preset manner in the current cycle.

[0024] Wind lidars generally scan periodically in a preset manner. The preset method refers to the scanning method of the wind lidar, including the distribution of the scanning time and scanning direction within a scanning period, and the corresponding relationship between the scanning time and the scanning direction. The scanning directions corresponding to different scanning times are generally different. The scan time can be represented by the actual time, or by the offset relative to the start point of the scan period. Commonly used scanning methods include Velocity-azimuth Display (VAD), Doppler Beam Swinging (Doppler Beam Swinging, DBS) and the like.

[0025] Si...

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Abstract

The invention discloses a data processing method for a wind measurement laser radar, and the method comprises the steps: obtaining the power spectrum of a plurality of signal sequences collected by the wind measurement laser radar in a current period; obtaining a peak point set of each signal sequence; judging whether each peak point set comprises a high signal to noise ratio peak point or not; taking the high signal to noise ratio peak point as an effective peak point if one peak point set comprises the high signal to noise ratio peak point, or else carrying out the tracking correlation of the peak point sets so as to search a real peak point; taking the real peak point as the effective peak point if the real peak point is found, or else determining that the peak point set does not contain the effective peak point; obtaining a radial wind speed matrix; and carrying out the wind field inversion through an observation matrix and the radial wind speed matrix, so as to obtain the wind speed vector of the current period. The invention also discloses a data processing device and system for the wind measurement laser radar, and a readable storage medium. Through the above mode, the system can improve the accuracy of a measurement result.

Description

technical field [0001] The invention relates to the field of radar, in particular to a data processing method, device, system and storage medium of a wind-measuring lidar. Background technique [0002] The working principle of the wind lidar is to scan the aerosol in the atmosphere and then detect the backscattering signal of the aerosol in the atmosphere, estimate the wind speed on the backscattering signal to obtain the radial wind speed in the direction of the laser line of sight, and then combine the system scanning In this way, the wind speed distribution in the observation field is obtained by inversion of the geometric relationship. [0003] Methods for wind speed estimation include pulse pair method, periodogram method and maximum likelihood method. In the actual system, considering the algorithm performance and real-time computing capability, the periodogram method is usually used. The periodogram method assumes that the echo signal (aerosol backscattering signal ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/95G01S17/58
CPCG01S17/58G01S17/95Y02A90/10
Inventor 肖增利岳显朱海龙
Owner NANJING MOVELASER TECH CO LTD
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