Final answer:
To determine the OT factor when the OT range is greater than 1000 meters, divide the distance to the landmark by the estimated distance traveled on flat ground without obstacles.
Step-by-step explanation:
The OT factor, also known as the outdoor travel factor, is used to estimate the distance to a distant landmark. When the OT range is greater than 1000 meters, you can determine the OT factor by dividing the distance to the landmark by the estimated distance traveled on flat ground without obstacles. Let's say the distance to the landmark is 2000 meters and the estimated distance traveled on flat ground is 100 meters. To calculate the OT factor, you divide 2000 by 100, which gives you an OT factor of 20.