Maximum theoretical range estimate
maxrng = radareqrng(lambda,SNR,Pt,Tau)
maxrng = radareqrng(...,Name,Value)
estimates
the theoretical maximum detectable range maxrng
= radareqrng(lambda
,SNR
,Pt
,Tau
)maxrng
for
a radar operating with a wavelength of lambda
meters
with a pulse duration of Tau
seconds. The signaltonoise
ratio is SNR
decibels, and the peak transmit
power is Pt
watts.
estimates
the theoretical maximum detectable range with additional options specified
by one or more maxrng
= radareqrng(...,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: $$\lambda =\frac{c}{f}$$ 

Transmitter peak power in watts. 

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 

Units of the estimated maximum theoretical range.
Default: 

The estimated theoretical maximum detectable range. The units
of 
[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
 radareqpow
 radareqsnr
 systemp