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the antenna and generating and
acquiring RF signals at 1,090 MHz
and 1,030 MHz.
MeasurementParameters
Tx Parameters
Tx out of the radar is connected
to the VSA of the ATE with an
attenuator. Transmission was a
gated sine pulse at RF frequency
with a pulse width of approximately
1 µs and pulse repetition time (PRT)
of 5 ms.
Tx frequency stability (1,030
MHz + 0.03 MHz)
Pulse peak power (2.0 KW)
Pulse repetition period (ms)
Output power mode and PRF
stability
Output power selection and
sectoring
Pulse spacing
Pulse shape
Duty cycle (0.01 percent to 66
percent)
Pulse width (µs)
Pulse rise time (ns)
Fall time (ns)
Frequency spectrum
Rx Parameters
Rx in the radar is received by the
RF pulses generated through the
VSG, which was synchronized with
a trigger/sync pulse. Each sync
pulse was synchronized with the
interrogating pulse. After receiving
a sync pulse to the trigger port of
the VSG and FPGA, the RF pulse out
was generated through the VSG.
The Rx video out was connected
to the oscilloscope card to measure
the following Rx parameters:
Receiver sensitivity
Receiver bandwidth
Receiver dynamic range
Receiver frequency stability
Phase differential measurements
Reception chain operational
sensitivity (STC)
Reception chain side lobe
suppression (RSLS)
Functional Test
In the functional test, the system
generated the antennal simulation
signals, such as north and ACP.
It simulated multiple targets at
different azimuths and ranges in both
stationary and trajectory motion,
and represented the transponder’s
Figure 3- Target Simulator Software Screen
Figure 4- Radar Scan Converter
New-Tech Magazine Europe l 53