This calculator determines the maximum range at which a radar can unambiguously detect a target, based on its pulse repetition frequency (PRF). It helps gauge the maximum measurable distance before echoes merge, ensuring accurate measurement of radar targets.
Formula
Unambiguous range = c/(2 × PRF)
where c = 3 × 10⁸ m/s and PRF = pulse repetition frequency
Explanation of the formula
Unambiguous range represents the maximum distance a radar signal can travel before a new pulse is emitted. The higher the PRF, the more the measurable range decreases, because the pulses return more frequently. Conversely, a lower PRF increases range but may reduce temporal resolution.
Uses of the calculator
- Design and calibration of radar systems.
- Evaluation of maximum range without overlapping echoes.
- Optimization of the relationship between range and resolution in pulsed radars.
- Training and analysis for radar and defense engineers and technicians.