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Typical military radars which can be
employed for such missions include the Thales RB-12, Elta MDSR
(EL/M-2129) or PPS-5 (currently enhanced by Syracuse Research
Corporation into the PPS-5D version). These systems are capable of
detecting a human target at a distance of 3-10 km. Airborne threats
(such as ULM or UAVs) can be spotted at long distance, while vehicles
can be detected and tracked at a distance of 10 – 20 km. Due to their
high sensitivity and wide area coverage, these radars usually generate
substantial "noise", especially when operating adjacent to populated
areas. To reduce such noise, radars are optimized to cover shorter
ranges, and implement special filtering algorithms which improve their
performance in force protection roles.
Motorola Perimeter Surveillance Radar System (PSRS) and EL/M-2128
MINDER from Elta are two examples of such radars – they are designed
to operate under all weather conditions, spot movement at short
distances of up to 1,000 meters from a fence and trigger an
instantaneous alarm including location, bearing and distance of the
target. Perimeter Surveillance Radar System (PSRS) is a compact ground
based radar designed by Motorola Israel for detection of human and
vehicular targets, at a short distance from the fence. Modern radars
can link directly to digital maps and geographical databases, feeding
target data directly into net-centric tactical command systems.
Plextek is offering the BLightER electronically scanned surveillance
radar capable of detecting human targets at ranges from 50 meters up
to 5 km. The BLightER 200 uses static antenna covers an arc of 80
degrees BLightER uses a wireless network to automatically linking with
neighboring radars and command centers. When security coverage of a
large area is required, aerostats are providing an effective solution
– medium size aerostats with volumes of 50 – 35 cubic meters can lift
electro-optical, radar and ESM sensors for extended durations, and
provide continuous coverage of wide area, at ranges of several
kilometers around the site. Typical aerostat borne systems are TAOS
and Mini-TAOS, produced by RAFAEL. Larger aerostats such as
JLENS, by Raytheon extend
ground and air defense capability to protect from cruise missile
attacks.
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