MARITIME – COMMUNICATION & REGULATION CALCULATOR
Sart Detection Range
A precise tool.
What is the Sart Detection Range & How does it work?
A Search and Rescue Transponder (SART) is a passive radar beacon that, when illuminated by a shipβs radar, reβradiates a signal to indicate its position.
The detection range depends on the radarβs transmitted power, the SARTβs antenna gain, the operating wavelength, and the minimum signal level the radar can detect.
By applying the radar range equation, mariners can estimate how far away a SART can be seen under given conditions.
R = \sqrt{\frac{P \; G \; \lambda^{2}}{(4\pi)^{2} S_{\min}}}
R = detection range (m)
P = transmitted power (W)
G = antenna gain (unitless)
\lambda = wavelength (m)
S_{\min} = minimum detectable signal (W)
P = transmitted power (W)
G = antenna gain (unitless)
\lambda = wavelength (m)
S_{\min} = minimum detectable signal (W)
Parameters
Result
β
Frequently Asked Questions
What is a SART?
A SART, or Search and Rescue Transponder, is a passive radar beacon used to indicate its position when illuminated by a ship's radar.
How does the detection range of a SART depend?
The detection range depends on the radar's transmitted power, the SART's antenna gain, the operating wavelength, and the minimum signal level the radar can detect.
What is the formula used to calculate the SART detection range?
The formula used is R = β(P * G * λ²) / ((4Ο)Β² * S_min), where R is the range, P is power, G is gain, Ξ» is wavelength, and S_min is the minimum signal level.
Can I use this calculator for any type of radar?
Yes, you can use this calculator for any type of radar by inputting the appropriate parameters such as transmitted power, antenna gain, operating wavelength, and minimum detectable signal level.
What factors might affect the accuracy of the SART detection range calculation?
Factors that might affect accuracy include atmospheric conditions, interference from other signals, and the specific characteristics of the radar equipment being used.
Results are for informational purposes only and do not constitute professional advice.