What formula is used to determine the range to a target?

The formula for determining range to a target is derived from the principles of radar and wave propagation. When calculating the range, it is essential to understand that the time a signal takes to travel to the target and back provides a direct means to find how far away the target is. The chosen formula utilizes the time it takes for the signal to travel, measured in microseconds, and relates this to nautical miles.

The correct answer indicates that to find the target range in nautical miles, you divide the target time in microseconds by a specific value. This value, which accounts for the speed of light and the conversion from time to distance, allows for an accurate assessment of the range.

The use of a divisor that reflects the necessary conversion factor is vital; it involves understanding the impact of speed in air and radio waves. This makes the calculation valid under standard conditions where the speed of the waves is consistent.

In contrast, the other options utilize incorrect formulations or units that do not facilitate accurate distance calculation to a target. Some of these incorrect options may use inappropriate multipliers or division factors that do not correspond to the physical principles governing wave travel and range measurement, leading to inaccurate conclusions regarding the target distance.