Page 28 - Fundamentals of Radar Signal Processing

s (t) Output of filter matched to single pulse in pulse train
p
waveform
S Polarization scattering matrix
S (ω) Power spectrum of a function or random signal f
f
Cross-power spectrum of functions or random signals f and
S (ω)
fg
g
Sx Covariance matrix for a random vector x

Transformed covariance matrix

Estimated covariance matrix
x
SIR Signal-to-interference ratio
SQNR Signal-to-quantization noise ratio

t, t 0 Time
t Target model vector

Transformed target model vector
Pulse repetition interval; detection threshold; track
T
measurement update interval
T Transformation matrix

T' Equivalent receiver temperature; detection threshold
Estimated threshold

Estimated threshold, log CFAR
T θ Sampling interval in θ

T a Aperture time
T avg Average PRI of a set of staggered PRFs

T M Time of matched filter output peak
T p pth PRI in set of staggered PRFs

T s Fast time sampling interval; sampling interval in s = sin θ
T tot Sum of PRIs corresponding to set of staggered set of PRFs

T w Time corresponding to swath width
u Along-track coordinate of synthetic aperture radar platform

u, u Tracking process noise

UDSF Usable Doppler space fraction
var(x) Variance of random variable x

υ Platform velocity
υ , υ Δ Sum and difference lobing voltages
Σ
υ Σ/Δ Lobing antenna ratio voltage
υ a Apparent velocity

υ b Blind speed