How can range be calculated in RADAR systems?

In RADAR systems, the calculation of range is dependent on the relationship between the time it takes for a RADAR pulse to travel to a target and back. The basic principle here is that the range can be determined by measuring the time delay of the RADAR signal.

The correct calculation for range involves taking the elapsed time for the pulse to travel to the target and back, and since this time includes both the outgoing trip and the return trip, it must be divided by 2. However, in the context of elapsed time being halved directly, the choice indicates an alternative method through a specific constant.

Generally, the elapsed time in microseconds (μs) is multiplied by a constant to accurately convert it into range. In this case, the elapsed time divided by a factor is applied to arrive at the correct range in nautical miles. The factor chosen here (12.36) corresponds to the specific speed of the RADAR signals in the context of the units used.

This relationship ensures that the calculated range reflects the correct distance covered by the RADAR signal, allowing operators to determine how far away the target is effectively.