Data processing apparatus and method for coherent wind measurement laser radar

Abstract

The invention discloses a data processing apparatus and method for a coherent wind measurement laser radar. The data processing method for a coherent wind measurement laser radar is characterized in that a mass of algorithm logic units and storage bandwidth in a graphic processor are utilized to execute computing-intensive and highly threaded parallel tasks and divide the backward scattering signal data of the laser radar into data segments according to a range gate and then distribute the data segments to the graphic processor to process; during the implementation process, a central processing unit sets parameters of a data acquisition unit, and then waits for completing acquisition of the backward scattering signal data; the central processing unit segments the backward scattering signal data according to the range gate, and creates a computing processing thread in the graphic processor, and then distributes the backward scattering signal data to the computing processing thread; and each thread of the graphic processor executes a wind speed inversion program concomitantly at the same time to complete inversion of the wind speed and output the wind speed. The data processing apparatus and method for a coherent wind measurement laser radar have the advantages of timeliness, high efficiency, simple and practicable thinking, low cost and short development period.

Description

technical field [0001] The invention relates to the technical field of coherent wind-measuring lidar, in particular to a data processing device and method based on a graphics processor in coherent wind-measuring lidar. Background technique [0002] Due to its high precision and high temporal and spatial resolution, coherent wind lidar plays an important role in boundary layer atmospheric wind profile measurement, wind shear warning, aircraft wake detection and wind energy resource utilization. It has broad application prospects in military and civil fields such as aerospace, remote sensing and telemetry, and meteorological observation. Accidents caused by weather can be used to arrange reasonable aircraft take-off and landing density services for airports; it can also be used for real-time measurement of wind direction and wind speed in antiaircraft artillery positions, providing correction data for weapon system launches, and improving hit rates. In terms of the utilizatio...

AI Technical Summary

Problems solved by technology

FPGA is implemented in a hardware description language, which is very different from the sequential operation of a computer or a single-chip microcomputer (whether it is a von Neumann structure or a Harvard structure), which also makes it difficult and expensive to get started with FPGA development.

Similarly, the technical difficulty and cost of developing DSP are also high

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