
These are the tried & true radar equations used for decades and can be found in
many textbooks and desk references. Transmitter power, target distance and radar cross-section
(RCS) are used along with free-space loss (Friis equation), and antenna gains to calculate
the power that arrives at the input of the receiver. These equations cover both monostatic
radar where the transmitter and receiver are in the same location and bistatic radar
where the transmitter and receiver are in different locations
(see drawings).
Here is information on propagation time,
path loss, and Doppler.
Keep all units consistent. Losses due to atmospheric absorption and antenna polarization
are not included.
Monostatic Radar Equation (Tx and Rx in same location)
(wavelength)
(frequency)
(convert to dBW)
Bistatic Radar Equation (Tx and Rx in different locations)
(wavelength)
(frequency)
(convert to dBW)
Related Pages on RF Cafe - Radar Equation, 2-Way
(another) -
Radar Equation, 1-Way -
Radar Equation, Bistatic
- Radar Techniques - Primer (1945
QST) - Radar Postage Stamps -
RF Cafe Quiz #7 - Radar Principles -
AN/MPN-14 USAF Radar Shop -
AN/TPN-19 USAF Radar Shop -
EW/Radar Handbook - Doppler Shift -
Doppler Shift Calculator -
Identification Friend or Foe
(IFF) - Radar Horizon / Line
of Sight - Radar Systems Vendors -
NEETS Radar Principles -
Radar System Vendors
- Who Invented Radar? -
Simple Modification Increases ATC Reliability
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