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
crosssection (RCS) are used along with freespace 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

Introduction to Radar (Air University)
 Radar Equation, 2Way
(another)

Radar Equation, 1Way

Radar Equation, Bistatic

Radar Techniques  Primer (1945 QST)
 Radar
Postage Stamps
 RF Cafe Quiz #7  Radar Principles
 AN/MPN14 USAF Radar Shop
 AN/TPN19 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
