USER’S MANUAL__________________________________________________________________
176 _________________________________________________________________ M211322EN-D
5.6.3 TTY Information Lines Within Pa
The TTY information lines will resemble:
BW:3.40MHz PW:29.99usec PSL:61.2dB ISL:51.3dB
TxLoss:0.5dB RxLoss:2.4dB
BW Bandwidth of the Tx waveform in MegaHertz.
PW Pulsewidth (pulse length) of the Tx waveform in
microseconds.
PSL Peak Sidelobe Level of the ambiguity diagram, expressed
in deciBels relative to the main lobe level. This is the peak
height of the strongest range/time sidelobe, and measures
the ability of the compressed pulse to distinguish a given
target from a small number of individual point targets that
also lie within the pulse volume. The waveforms ability to
"see" between clutter targets is largely determined by the
PSL level.
ISL Integrated Sidelobe Level of the ambiguity diagram,
expressed in dB relative to the main lobe. This is the total
power in all range/time sidelobes divided by the total
power in the main lobe. ISL measures the ability of the
compressed pulse to distinguish a given target from other
distributed targets (such as rain) that also lie within the
pulse volume.
TxLoss The TxLoss is calculated as the total power in the transmit
waveform divided by the power that would be contained in
an equal length ideal rectangular pulse. It is a measure of
how much power does not get transmitted due to the
amplitude shaping of the synthesized waveform. TxLoss
should be included in the computation of the radar
constant, since the latter is based on a nominal pulsewidth
equal to the overall length of the entire Tx waveform
(including the amplitude tapering).
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