The correct answer is B.
The parallax difference is the difference in the apparent position of an object when viewed from two different points. In this case, the two points are the two ends of the camera’s focal length. The parallax difference is measured in millimeters.
The flying height is the height of the camera above the ground. The focal length is the distance between the camera’s lens and the sensor.
The formula for calculating the ground distance represented by a parallax difference is:
Ground distance = (Parallax difference * Flying height) / Focal length
In this case, the parallax difference is 0.01 mm, the flying height is 3600 m, and the focal length is 15.23 cm. Substituting these values into the formula, we get:
Ground distance = (0.01 mm * 3600 m) / 15.23 cm = 2 m
Therefore, a parallax difference of 0.01 mm represents 2 m on the ground.
The other options are incorrect because they do not represent the correct ground distance represented by a parallax difference of 0.01 mm.