This calculator determines the pulse repetition frequency (PRF) and pulse repetition time (PRT) for radar systems. These values are essential to ensure unambiguous detection of targets within a given range.
Useful for radar engineers, ranging system designers, and electronics students seeking to understand the relationship between maximum range and pulse frequency.
Formulas
PRF (Hz) = c / (2 × R max )
PRT (s) = 1 / PRF
where c = 3 × 10⁸ m/s
Explanation of formulas
- The PRF indicates how many radar pulses are transmitted per second.
- The PRT is the time interval between two successive pulses.
- A high maximum range requires a lower PRF to avoid distance ambiguities.
- These equations help balance the detection range and temporal resolution of the radar.
Calculation of the PRF for a range of 150 km
Entry : R max = 150 km
Output : PRF ≈ 1000 Hz, PRT ≈ 0.001 s
Benefits and uses
- Optimizes the range and accuracy of radar systems.
- Allows you to avoid ambiguous echo returns.
- Useful for the design and analysis of monitoring and telemetry systems.
- Learning tool to understand the principles of radar operation.