Hardware Manual COMBILOG 1020
165
Standard deviation
s
x
x
n
n
=
−
∑
∑
−
²
(
)²
1
Vector mean value of wind direction (VecD) and wind
speed (VecV)
The components of the horizontal wind vector
(
)
r
u WV WD
,
are
given as single values, with
WV - wind speed
WD - wind direction
The single components of the wind vector are determined by:
(
)
u
WV
WD
1
=
* cos
(
)
u
WV
WD
2
=
* sin
The mean values are subsequently gained by:
u
n
u i
i
n
1
1
1
1
=
=
∑
u
n
u i
i
n
2
2
1
1
=
=
∑
with i = Summation index
n = Number of single values within averaging period
Summary of Contents for COMBILOG 1020
Page 1: ...COMBILOG 1020 Datalogger Hardware Manual Version 3 09...
Page 2: ...Hardware Manual COMBILOG 1020 2 Issue 03 11 2005 Technical data are subject to change...
Page 4: ...Hardware Manual COMBILOG 1020 4...
Page 6: ...Hardware Manual COMBILOG 1020 6...
Page 12: ...Hardware Manual COMBILOG 1020 12...
Page 86: ...Hardware Manual COMBILOG 1020 86 Bild 8 1 Example Master Slave System...
Page 169: ...Hardware Manual COMBILOG 1020 169...
Page 170: ...Hardware Manual COMBILOG 1020 170...