Qhov tseeb ntawm cov ntsuas dej radar feem ntau cuam tshuam los ntawm cov hauv qab no: Ua ntej, cov xwm txheej kev teeb tsa - lub sensor yuav tsum yog perpendicular rau ntawm qhov dej thiab teeb tsa rau hauv ib ntu channel ncaj (tsis muaj teeb meem tsawg kawg 5 zaug ntawm qhov dav ntawm channel upstream thiab 2 zaug ntawm qhov dav ntawm channel downstream) kom tsis txhob muaj cov teb ntws turbulent (xws li vortices thiab backflows). Qhov thib ob, qhov tseeb ntawm cov kev ntsuas hla-seem - qhov yuam kev hauv kev nkag mus rau qhov loj me thiab cov duab ntawm qhov channel cross-section (piv txwv li, rectangular, trapezoidal) ncaj qha cuam tshuam rau cov txiaj ntsig kev suav ntws. Qhov thib peb, kev cuam tshuam ib puag ncig - muaj zog electromagnetic hluav taws xob, nag hnyav, pos huab ntom ntom, thiab ntau yam khoom ntab ntawm qhov dej yuav cuam tshuam nrog cov teeb liab radar. Qhov thib plaub, hom khoom siv - cov ntsuas dej radar sib xyaw ua ke uas ntsuas ob qho tib si ceev thiab dej theem feem ntau muaj qhov tseeb siab dua li cov uas tsuas yog ntsuas dej theem. Nyob rau hauv cov xwm txheej zoo tagnrho (kev hla-seem tsis tu ncua, thaj chaw ntws ruaj khov, thiab phim nrog cov qauv weirs / flumes), qhov tseeb tuaj yeem ncav cuag hauv ± 3%; hauv cov xwm txheej nyuaj xws li cov dej ntuj, qhov tseeb feem ntau yog ± 5% txog ± 10%.
Lub sijhawm tshaj tawm: Cuaj hlis-28-2025