JED - December 2013 - 31

GROUND SYSTEMS

SignalWorks

accuracy of 5 μW/cm 2, detection time
of 100 msec and threat classification
within 300 msec. The systems provide
both audible and visual warning, and
can operate independently or be integrated with a variety of countermeasure
system types.
In the case of the US Army, much of
its laser-warning technology deployment
has been tied to budget realities and program starts and stops - for example, to
the Future Combat System (FCS) program
that was cancelled in 2009, and now to

The Journal of Electronic Defense | December 2013

The deployment of, and design
requirements for, laser warning systems intended for ground-vehicles
has also evolved over the years. ISR
Systems' AN/VVR-1 laser warning system has been tested and incorporated
on vehicles such as M-1 Abrams tank
and the M-2 Bradley Fighting Vehicle.
This was improved with the subsequent
AN/VVR-2 version that incorporated a
single, mast-mounted sensor, and again
with AN/VVR-3 which added a beamrider detection capability.
As described by Gephart, groundbased systems pose unique challenges
for laser-warning systems due to environmental clutter and laser reflection
creating false-positives or inaccurate
AOA information. To deal with this, ISR
Systems has incorporated reflectionprocessing algorithms within its sensors
and systems that ensure true directional
information is reported. The systems
also include a coherency detector which,
since lasers generate coherent light, can
be used as a mitigating parameter to
ensure that detected light is not from
some other source on the battlefield,
such as an explosion.
Although Gephart admits that the
initial requirement they were working
toward was largely to protect rotary wing
aircraft, at the same time, they were nevertheless also developing capabilities for
ground vehicles, "both evolving in parallel over the years through ECPs, technology advances, and SWAP improvements."
ISR Systems has sold its VVR-series systems via US Government Foreign Military
Sales channels to militaries all over the
world including Canada, Australia and
New Zealand. Says Gephart, "We expect
our customers will continue to look at
laser-warning systems for their ground
vehicles, particularly in the context of
the increased value these sensors provide when you begin to add things like
active protection systems, but also as
stand-alone capabilities that can provide the necessary level of advanced
early warning times for crews to be able
to maneuver, return fire, or take other
defensive actions."
In that regard, Gephart adds that
although their work with the US Army
on the AV/AVR-2X was initially aimed at

rotorcraft, "we also have an eye toward
ground combat vehicles in future as well."
Elbit Systems (Haifa, Israel) also
builds a range of laser warning systems for armored vehicles. In use with
a number of militaries around the world
including NATO nations, the systems
provide 360-degree threat coverage via
four sensor packages. Specific to lowpower, beam-rider threat detection, the
company cites a spectral response range
between 0.9 - 1.1 μm with a detection
sensitivity of 0.3 to 1 μW/cm2 and an AOA

31

Signal Collection
and Analysis
* Streamlined signal preview
and analysis software for
complex analysis of unknown
Signals of Interest
* Real-time collection and
processing systems for
specialized satellite and
terrestrial communications

Windows and Linux Support
Auto-detection
OFDM Support

www.triasys.us

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10/11/13 10:03 PM


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JED - December 2013

Table of Contents for the Digital Edition of JED - December 2013

The View From Here
Conferences Calendar
Courses Calendar
From the President
The Monitor
World Report
Seeing the Light: Laser Warning Systems Facing Increasingly Lethal Threats
2014 EW/SIGINT Resource Guide
EW 101
AOC News
Index of Advertisers
JED Quick Look
JED - December 2013 - cover1
JED - December 2013 - cover2
JED - December 2013 - 3
JED - December 2013 - 4
JED - December 2013 - 5
JED - December 2013 - The View From Here
JED - December 2013 - 7
JED - December 2013 - Conferences Calendar
JED - December 2013 - 9
JED - December 2013 - Courses Calendar
JED - December 2013 - 11
JED - December 2013 - From the President
JED - December 2013 - 13
JED - December 2013 - 14
JED - December 2013 - The Monitor
JED - December 2013 - 16
JED - December 2013 - 17
JED - December 2013 - 18
JED - December 2013 - 19
JED - December 2013 - 20
JED - December 2013 - 21
JED - December 2013 - 22
JED - December 2013 - 23
JED - December 2013 - World Report
JED - December 2013 - 25
JED - December 2013 - Seeing the Light: Laser Warning Systems Facing Increasingly Lethal Threats
JED - December 2013 - 27
JED - December 2013 - 28
JED - December 2013 - 29
JED - December 2013 - 30
JED - December 2013 - 31
JED - December 2013 - 32
JED - December 2013 - 2014 EW/SIGINT Resource Guide
JED - December 2013 - 34
JED - December 2013 - 35
JED - December 2013 - 36
JED - December 2013 - 37
JED - December 2013 - 38
JED - December 2013 - 39
JED - December 2013 - 40
JED - December 2013 - 41
JED - December 2013 - 42
JED - December 2013 - 43
JED - December 2013 - 44
JED - December 2013 - 45
JED - December 2013 - 46
JED - December 2013 - 47
JED - December 2013 - 48
JED - December 2013 - 49
JED - December 2013 - EW 101
JED - December 2013 - 51
JED - December 2013 - 52
JED - December 2013 - 53
JED - December 2013 - AOC News
JED - December 2013 - 55
JED - December 2013 - 56
JED - December 2013 - Index of Advertisers
JED - December 2013 - JED Quick Look
JED - December 2013 - cover3
JED - December 2013 - cover4
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