In the polar volume data there seems to be an inconsistency in the range scale where some times the rscale is 500 m and sometimes a 1000m (atleast in ES/BAR). Looking at the ppi this does not seem real as often the static objects shift closer and further form the radar, see the plots below where the cutout for the mountains shift. This might impact the quality of vp`s.
require(bioRad)
#> Loading required package: bioRad
#> Welcome to bioRad version 0.5.2.9410
#> Docker daemon running, Docker functionality enabled (vol2bird version 0.5.0)
require(uvaRadar)
#> Loading required package: uvaRadar
keys<-c("baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T0000_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T0011_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T0021_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T0050_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2100_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2110_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2120_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2130_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2141_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2150_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2201_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2211_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2221_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2230_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2241_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2250_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2300_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2310_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2321_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2330_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2341_8179.h5", "baltrad/init/ES/BAR/2019/09/23/ESBAR_pvol_20190923T2350_8179.h5")
plot(project_as_ppi(scn1<-retrieve_pvol(keys[1])$scans[[1]]))
#> Warning in proj4string(obj): CRS object has comment, which is lost in output

plot(project_as_ppi(scn2<-retrieve_pvol(keys[2])$scans[[1]]))
#> Warning in proj4string(obj): CRS object has comment, which is lost in output

scn1$attributes$where$rscale
#> [1] 1000
scn2$attributes$where$rscale
#> [1] 500
unlist(lapply(keys, function(x) retrieve_pvol(x)$scans[[1]]$attributes$where$rscale))
#> [1] 1000 500 500 1000 1000 1000 1000 1000 500 1000 500 500 500 1000 500
#> [16] 1000 1000 1000 500 1000 500 1000
Created on 2020-12-01 by the reprex package (v0.3.0)
In the polar volume data there seems to be an inconsistency in the range scale where some times the rscale is 500 m and sometimes a 1000m (atleast in ES/BAR). Looking at the ppi this does not seem real as often the static objects shift closer and further form the radar, see the plots below where the cutout for the mountains shift. This might impact the quality of vp`s.
Created on 2020-12-01 by the reprex package (v0.3.0)