Radar Wind Speed Prediction Through 2D Doppler Processing
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Solution Overview
Problem
Conventional wind speed prediction devices perform three-dimensional calculation processing, leading to increased computational load.
Innovation Solution
A wind speed prediction device that predicts wind speed without performing three-dimensional calculation processing by using a radar device with a beam transmitting and receiving unit to emit beams at different elevation angles, acquiring scattering signals, calculating Doppler frequencies, and estimating wind speed distributions in two-dimensional planes using the Volume Velocity Processing (VVP) method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If three-dimensional calculation processing is performed to predict wind speed using weather models, then prediction accuracy is improved, but computational load increases
Solution Approach 1:
The patent transforms the three-dimensional wind speed prediction problem into a two-dimensional solution by utilizing radar observations in the horizontal plane. Instead of performing computationally intensive 3D weather model simulations, the system processes radar data that provides wind information directly in the horizontal dimension, thereby reducing computational complexity while maintaining prediction accuracy for wind speed in the observation region.
Solution Approach 2:
The patent replaces the mechanical/weather model-based three-dimensional simulation system with a radar observation-based system. By using radar to directly measure wind components and applying mathematical transformations (such as the relationship between radar radial velocity and wind components), the system eliminates the need for complex 3D numerical weather prediction models, thus reducing computational burden while maintaining accuracy.
2Reliability
If three-dimensional calculation processing is performed to simulate wind speed, then prediction reliability is improved, but processing time increases
Solution Approach 1:
The patent reduces processing time by changing the dimensional complexity from three-dimensional to two-dimensional. By processing radar observations that provide wind information in the horizontal plane through mathematical transformations, the system achieves reliable wind speed predictions without the time-consuming 3D simulations, thus maintaining reliability while significantly reducing processing time.
Solution Approach 2:
The patent substitutes the time-consuming three-dimensional weather model simulation with a faster radar-based processing approach. By using radar to directly observe wind components and applying mathematical relationships (such as converting radial velocity to wind components), the system maintains prediction reliability while dramatically reducing the time required for processing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate wind speed prediction without the need for three-dimensional calculations, reducing computational burden and maintaining prediction accuracy.
Implementation Method 1
a scattering signal that is each of a plurality of beams emitted to space and scattered in space
Implementation Method 2
calculate a Doppler frequency of a range bin corresponding to a two-dimensional plane including an observation region from each of the scattering signals
Implementation Method 3
calculate a Doppler frequency of a range bin corresponding to a two-dimensional plane including an observation region from each of the scattering signals
Implementation Method 4
estimating a wind speed distribution in a two-dimensional plane from a plurality of Doppler frequencies
Data Source
Figure 1
Figure 2A~2B
Figure 3~4
AI summary
A wind speed prediction device (3) is formed, including a scattering signal acquiring unit (11) to acquire a scattering signal that is each of a plurality of beams after being emitted to space and scattered in the space, the beams having mutually different elevation angles, which are angles formed by a line-of-sight direction and a horizontal direction, a Doppler frequency calculating unit (12) to set a range bin width as distance resolution of each of scattering signals acquired by the scattering signal acquiring unit (11) in accordance with an elevation angle of each of the beams emitted to the space, and calculate a Doppler frequency of a range bin corresponding to a two-dimensional plane including an observation region from the each of the scattering signals, a first wind speed distribution estimating unit (13) to estimate a wind speed distribution in the two-dimensional plane from a plurality of Doppler frequencies calculated by the Doppler frequency calculating unit (12) using a VVP method, and a wind speed prediction unit (15) to predict a wind speed in the observation region from the wind speed distribution in the two-dimensional plane estimated by the first wind speed distribution estimating unit (13) using a two-dimensional Navier-Stokes equation.