Lab-Volt 8096 Manual page 22

RADAR TRAINING SYSTEM
MODEL 8096
Model 9595-1 – Radar Jamming Pod Trainer
Support
This support is a mast designed to support the Radar
Jamming Pod Trainer when it is used to perform
electronic jamming against the Lab-Volt radar. The large
base of the mast provides stable support of the Radar
Jamming Pod Trainer. Soft pads attached under the
base allow the mast to glide softly over the surface of the
Target Positioning System.
Model 9608 – Radar Jamming Pod Trainer
The Radar Jamming Pod Trainer is a Self-Screening
Jammer (SSJ) target in a compact enclosure. It is
designed to be placed on the Target Positioning System,
Model 9607, to electronically attack the Lab-Volt radar
training system by masking the target echo signal with
noise or causing either range or angle deception. The
Radar Jamming Pod Trainer mainly consists of an RF
signal source, a variable attenuator, transmitting and
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receiving horn antennas, a signal repeater, an amplitude
modulator, and a remote controller.
The RF signal source is a Voltage-Controlled
Oscillator (VCO) whose
approximately twice that of the Lab-Volt radar training
system. The VCO frequency can be adjusted to perform
radar jamming using spot noise. The VCO can also be
modulated in frequency, either internally or externally, to
produce barrage noise jamming. The variable attenuator
decreases the VCO signal level before it is sent to the
transmitting horn antenna. This allows the amount of
noise introduced in the victim radar (i.e., the Lab-Volt
radar) to be adjusted. The maximum transmitted power
is low, thereby providing safe operation in a laboratory
environment.
The receiving horn antenna intercepts the pulse
signal transmitted by the Lab-Volt radar. The repeater,
which consists of an amplifier and a programmable delay
line, amplifies and delays the intercepted signal. By
transmitting this signal back to the radar and gradually
increasing the delay, the range gate in the radar tracking
system can be captured and pulled away from the target
echo, thereby producing range deception. This technique
is usually referred to as Range Gate Pull Off (RGPO).
The amplitude modulator consists of an electronic
RF switch which can be controlled either internally or
externally. It is used to modulate the amplitude of the
VCO output signal
modulation). The amplitude
implementation of AM noise jamming and asynchronous
inverse gain jamming. It also allows blinking jamming
when a second transmitting horn antenna is connected
to an auxiliary RF output on the Radar Jamming Pod
Trainer. These three jamming techniques are used to
cause angle deception in the radar tracking system.
The remote controller is used to operate the Radar
Jamming Pod Trainer. Communication between the
remote controller and the Radar Jamming Pod Trainer is
through an infra-red link. Buttons and an LCD display on
the remote controller provide access to the various
functions of the Radar Jamming Pod Trainer.
The Radar Jamming Pod Trainer can be tilted 90E to
perform cross-polarization jamming, another technique
used to cause angle deception in the radar tracking sys-
tem. It can also be used with accessories to demonstrate
other jamming techniques such as sidelobe jamming,
formation jamming, and jammer illuminated chaff (JAFF),
as well as the fundamentals of stealth technology.
The Radar Jamming Pod Trainer operates from
unregulated DC voltages. A cable allows the Radar
Jamming Pod Trainer to be connected to a Lab-Volt
standard unregulated DC power bus (available on the
Power Supply / Antenna Motor Driver, Model 9601, and
the Power Supply, Model 9609).
frequency range
or repeated signal
modulator
is
(on-off
allows