Ranger HRC™ operator´s manual – System description
Publ. No. TM 614 006 699 Rev B – ENGLISH (EN) – Oct 30. 2008 5
The IR Camera has a set of automatic functions that ensure a high cont-
rast image even in the most challenging thermal conditions, such as level
and span adjustments, histogram equalization and Digital Detail Enhance-
ment processing.
The IR Camera is a rugged and sealed unit, designed for harsh environ-
ments. There are heaters for defrosting of the front lens.
3.1.2 TV Camera
The TV Camera is a sensitive, high-magnication, color quality daylight
camera, used for additional target identication when conditions permit.
The TV Camera is a standard item mounted in a rugged FLIR housing.
3.1.3 LRF
The Laser Range Finder (LRF) unit is an optional system component.
The LRF unit is a light weight eye-safe laser range nder, radiating in
the 1.54μm Erbium glass wave length. The unit consists of a laser trans-
mitter, a laser receiver, power supplies and control and signal processing
electronics.
The LRF unit determines the distance to a target by measuring the time
it takes for a laser pulse to go the target and back again. This time is con-
verted to a distance.
For more information about distance measurements, see section 11.5.
3.1.4 GPS
The Global Positioning System (GPS) unit is an optional system compo-
nent.
The Global Positioning System is a network of satellites that transmit
accurate time and position information worldwide. GPS receivers receive
signals from these satellites and use the information to determine an
exact location. Satellites orbit the earth at around 12,000 miles. While a
GPS receiver can detect signals from up to 12 satellites at any time, only
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