Campbell Scientific CSAT3 3-D Sonic Anemometer - Manual (Page 46)

CSAT3 Three Dimensional Sonic Anemometer
36: End (P95)
37: End (P95)
;Process CSAT3 Output data.
;
38: Beginning of Subroutine (P85)
1: 3 Subroutine 3
;Add the offset (theta) between the CSAT3 negative x-axis and
;North.
;
39: Z=X+Y (P33)
1: 14 X Loc [ cmpss_dir ]
2: 35 Y Loc [ theta ]
3: 14 Z Loc [ cmpss_dir ]
;Ensure that the compass wind direction is positive.
;
40: If (X<=>F) (P89)
1: 14 X Loc [ cmpss_dir ]
2: 4 <
3: 0 F
4: 30 Then Do
41: Z=X+F (P34)
1: 14 X Loc [ cmpss_dir ]
2: 360 F
3: 14 Z Loc [ cmpss_dir ]
42: End (P95)
;Ensure that the compass wind direction (cmpss_dir) falls between
;0 and 360 degrees.
;
43: Z=X MOD F (P46)
1: 14 X Loc [ cmpss_dir ]
2: 360 F
3: 14 Z Loc [ cmpss_dir ]
;Ensure that the csat3 wind direction (csat_dir) falls between
;between 180 and -180 degrees.
;
44: If (X<=>F) (P89)
1: 17 X Loc [ csat_dir ]
2: 3 >=
3: 180 F
4: 30 Then Do
45: Z=X+F (P34)
1: 17 X Loc [ csat_dir ]
2: -360 F
3: 17 Z Loc [ csat_dir ]
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