Peak power estimate from radar equation
Pt = radareqpow(lambda,tgtrng,SNR,Tau)
Pt = radareqpow(...,Name,Value)
estimates
the peak transmit power required for a radar operating at a wavelength
of Pt
= radareqpow(lambda
,tgtrng
,SNR
,Tau
)lambda
meters to achieve the specified signaltonoise
ratio SNR
in decibels for a target at a range
of tgtrng
meters. The target has a nonfluctuating
radar cross section (RCS) of 1 square meter.
estimates
the required peak transmit power with additional options specified
by one or more Pt
= radareqpow(...,Name,Value
)Name,Value
pair arguments.

Wavelength of radar operating frequency (in meters). The wavelength is the ratio of the wave propagation speed to frequency. For electromagnetic waves, the speed of propagation is the speed of light. Denoting the speed of light by c and the frequency (in hertz) of the wave by f, the equation for wavelength is: $$\lambda =\frac{c}{f}$$ 

Target range in meters. When the transmitter and receiver are
colocated (monostatic radar), 

The minimum output signaltonoise ratio at the receiver in decibels. 

Single pulse duration in seconds. 

Transmitter and receiver gain in decibels (dB). When the transmitter
and receiver are colocated (monostatic radar), Default: 20 

System loss in decibels (dB). Default: 0 

Radar cross section in square meters. The target RCS is nonfluctuating. Default: 1 

System noise temperature in kelvin. The system noise temperature is the product of the system temperature and the noise figure. Default: 290 kelvin 

Transmitter peak power in watts. 
[1] Richards, M. A. Fundamentals of Radar Signal Processing. New York: McGrawHill, 2005.
[2] Skolnik, M. Introduction to Radar Systems. New York: McGrawHill, 1980.
[3] Willis, N. J. Bistatic Radar. Raleigh, NC: SciTech Publishing, 2005.
noisepow
 phased.ReceiverPreamp
 phased.Transmitter
 radareqrng
 radareqsnr
 systemp