Signal Quality Index (SQI)
The autocorrelation of the received signal at lag 1 divided by lag zero. This is a number
in the range [0,1] where 1 is the perfect Doppler point target and 0 is white noise.
Typically used for thresholding velocity and width at a level of ~0.3...0.4.
SNR
signal-to-noise ratio
STALO
Stable Local Oscillator. A very stable radio frequency local oscillator used in radar for
mixing received signals to produce an intermediate frequency signal.
STAR mode
Simultaneous Transmit And Receive. The operational mode of a dual polarization
radar where the radar transmits simultaneously horizontally and vertically.
TCF
threshold control flags
TX
Transmitter
VCXO
voltage-controlled crystal oscillator
WSP
weather system processor
Glossary
471
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