neq = sarnoiserefl(freq,freqref,imgsnr,sigmaref,n)
specifies a frequency-dependent proportionality factor that depends upon the target
characteristics.
Estimate the noise equivalent reflectivity of a side-looking SAR operating at a frequency of 16 GHz for a target reflectivity of –25 dB at the Ku band (nominally 16.7 GHz) and to form an image having an SNR of 30 dB.
Radar frequency in hertz, specified as a positive real scalar or a vector.
Data Types: double
Nominal reference frequency in hertz, specified as a positive real scalar.
Data Types: double
Image signal-to-noise ratio (SNR) of the SAR in decibels, specified as a real scalar
or a vector.
Data Types: double
Reflectivity at nominal reference frequency in square meters per square meter, specified as a
positive real scalar.
Data Types: double
Frequency-dependent proportionality factor, specified as a real scalar. For distributed
targets, n varies between 0 and 1. For nondistributed targets,
n is a positive real scalar.
Noise equivalent reflectivity in decibels, returned as a matrix. The rows of
neq correspond to the frequency values in
freq. The columns of neq correspond to the
image SNR values in imgsnr.