ASR Radar Range & Blind Speed Calculator & Formula

This online ASR Radar Range & Blind Speed Calculator allows you to compute the maximum detection range and blind speed of Airport Surveillance Radar (ASR) systems based on essential parameters such as transmit power, antenna gain, radar cross section, and more. Simply input the required values, and the calculator will provide you with the maximum range at which the radar can effectively detect targets, as well as the blind speed.

ASR Radar Range Calculator

Example PRF Calculation:

Scenario :

INPUTS:

• Unambiguous Range (R) = 60 nautical miles

OUTPUT:

• Range in meters = 111120 meters
• Pulse Repetition Frequency (PRF) = 1349.89 Hz

ASR Radar Range Formula

Following radar equation can be used to calculate the maximum range of ASR radar systems:

Where:

• R = Unambiguous Range (meters)
• PRF = Pulse Repetition Frequency (Hertz)
• c = Speed of light (approximately 3 x 10^8 meters/second)

ASR Radar Blind Speed Calculator

Example Calculation:

Scenario :

INPUTS:

• Operating Frequency = 3 GHz (For S band radar)
• Blind Speed Harmonic (n) = 1
• PRF = 1000 Hz

OUTPUT:

• Wavelength (λ) = 0.1 meters
• Blind Speed = 50 meters/second
• Blind Speed in knots = 97.19 knots

ASR Radar Blind Speed Formula

Following formula can be used to calculate the blind speed of ASR radar systems:

Where:

• Vb = Blind Speed (meters/second)
• λ = Wavelength (meters) = c / f
• c = Speed of light (approximately 3 x 10^8 meters/second)
• f = Operating Frequency (Hertz)
• PRF = Pulse Repetition Frequency (Hertz)
• n = Integer (1, 2, 3, …), representing the order of the blind speed

References

1. “Introduction to Radar Systems,” 3rd Edition, Merrill I. Skolnik, McGraw-Hill, 2001.
2. Fundamentals of Air Traffic Control. 5th Edition. Nolan, Michael S. Cengage Learning, 2010.