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Lidar arc scan uncertainty reduction through scanning geometry optimization

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Figure

Table 1. Galion G4000 Doppler wind lidar specification1.
Figure 1. The relationship between the signal-to-noise ratio (SNR)and the radial velocity random error variance (σ 2e )
Figure 2. An example of the spatial distribution of air parcelssampled in two consecutive arc scans by a lidar at range distances = 315 m for four different wind directions (westerly, easterly,northerly, and easterly) under the following assumptions: (1) frozenturbulence, (2) the lidar is located at the origin (the dark triangle)scanning from θ = 75 to 105◦ with 5◦ increments with elevationangle φ = 17◦, (3) the mean wind speed is 7 ms−1 and (4) the sam-pling interval is 3 s.
Figure 3. Dependence of the relative standard error (εl) of windspeed estimated from arc scans on (a) turbulence intensity (TI) and(b) wind speed (V0) and direction (expressed as the relative direc-tion (β)) based on the isotropic turbulence model given in
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