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New
all weather sensor technology enhances surveillance and detection
For
years there has been a gap in the security market for a reliable
24 hour, all weather sensor to detect and track intruders. Conventional
sensor technology such as CCTV, infrared, inductive loops, point-to-point
microwave and laser, all offer different capabilities. But equally,
all have inherent limitations as outdoor sensors.
Now, a new technological
breakthrough - Millimetre Wave Radar - offers a practical solution.
The high frequency and narrow beam width mean that it is largely
unaffected by environmental conditions: rain, snow, sun light, heat,
cold, smoke, fog, and darkness. This is why it has become the sensor
of choice for safety critical outdoor vehicle automation.
Why does
the security industry need a reliable outdoor detection and tracking
sensor?
Needless
to say, the world is increasingly a more dangerous place. It is
no longer practical to rely on or charge for manpower to monitor
CCTV screens and patrol perimeters. Automatic sensing technology
is getting smarter. It enables more effective threat assessment
and more rapid intelligent threat response. The Navtech Radar surveillance
system will identify and track multiple intruders through a fence
before they reach the perimeter, let alone before they breach it
and get inside.
Why hasn't
millimetre wave radar been around before?
Millimetre wave
radar sensing technology has existed for years. However, until recently,
the radar components and computing power needed to process the radar
data returns were only affordable in military applications. Now,
the development of automotive radar for active cruise control and
advances in computing have made it possible to engineer an affordable
commercial radar system for industrial applications. The Navtech
Radar W800 series surveillance radar is the
first of its kind.
Is it safe?
Is it reliable?
The Navtech Radar W800 surveillance radar is totally safe for
human exposure. It emits 10 mWatts of power. That's 100 times less
than a conventional mobile phone!
Whilst the technology
is relatively new to the security industry, Navtech Radar sensors
have been operating in Australia to navigate driverless port vehicles
since 1999. Navtech's surface movement radar has been operating
as an ATC tool at East Midlands Airport, UK, since 2004, where it
has achieved Civil Aviation Authority approval. Navtech Radar has
developed a reputation in developing products that operate in severe
environments - a testament to the quality, safety, robustness and
reliability of its product designs. The new radar is effectively
"fit & forget".
How does
it work?
The radar beam
spreads outwards from the sensor at a narrow horizontal and vertical
angle, hitting the ground and filling a volume of space like a torch
beam. It is practically impossible to evade. False alarms can be
filtered out in the security software or by camera verification.
The radar is
supplied complete with a suite of NS3-CT site security software. This is normally pre-installed on a rack-mounted
computer. It allows the operator to establish detection zones on
a background map or aerial photograph of the area, over which is
displayed the location, speed and direction of any intruder. The
software directs CCTV cameras to focus upon and display the detected
threats. It can be programmed to control any PTZ camera that can
be controlled to an absolute position. The software classifies targets
and can indicate if the intruder is a person or a vehicle. The system
measures return power so it can filter out birds and small animals,
etc, further reducing false alarms.
Security Systems Continued
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