Colocated Sensors

Colocated sensors are two or more sensors of the same type whose measurement heights are either identical or close enough to be within the margin of the colocation threshold.

Colocated wind speed sensors are common in the wind resource assessment world. That's because for redundancy, and to enable the detection and removal of tower distortion effects, measurement teams often install a pair of wind speed sensors at each measurement height on a meteorological tower. If the two wind speed sensors are mounted at different orientations relative to the tower, then at least one should always be well exposed to the wind, and nearly free of the effects of tower shading.

Windographer gives special treatment to such colocated wind speed sensors on the Tower Distortion window and the Flag Tower Shading window. It also allows you to define flag rules that search for anomalous outputs from colocated wind speed sensors.

Settings

You can instruct Windographer to calculate the ratio of all colocated wind speed sensors as a calculated column. You can set this for your current dataset from the Basic Properties tab of the Configure Dataset window. To change the default setting which will apply to all future newly created/imported datasets go to Tools > Options > General.

You can specify the vertical distance within which Windographer will consider a pair of sensors to be colocated. By default Windographer considers sensors to be colocated if their measurement heights are within 1 m of each other. You can change this for your current dataset from the Basic Properties tab of the Configure Dataset window. To change the default setting which will apply to all future newly created/imported datasets go to Tools > Options > General.