Lesson 2/Learning Event 1
FIGURE 6. LOCATION OF SURVEY METER AND
The method for computing the air-ground correlation factor is described below.
An aerial radiological survey is being conducted in a UH-1 helicopter. At a check point the aerial dose-
rate reading is 5 cGy(rad)/hr. The helicopter lands and the monitor measures an unshielded ground dose
rate of 20 cGy(rad)/hr. The correlation factor data are: