This calculator finds the maximum range at which a radar can detect a target without range ambiguity, based on the pulse repetition frequency (PRF). It helps determine the radar’s effective detection limit for accurate distance measurement.
Formula
Unambiguous Range = c / (2 × PRF)
Formula Explanation
- c = speed of light (3 × 10⁸ m/s)
- PRF = pulse repetition frequency (Hz)
- The formula ensures echoes from one pulse return before the next is transmitted.
Example
Input: PRF = 10 kHz
Result: Unambiguous Range = 15 km
Who uses it
Useful for radar system designers and engineers optimizing detection range and avoiding signal overlap issues.