Tips for Securing Airport Perimeters

Perimeter Security for Airports

When selecting a perimeter solution to protect airports, consider these best practices:

• Choose thermal cameras for outdoor perimeters -- Lighting is often poor or unavailable along extensive airport perimeters. Thermal cameras will ignore stray headlights and reflected light, while operating in total darkness and bright sun. They also eliminate the expense, power and difficulty of lighting large airport perimeters.
  
  
• Use GPS analytics to increase detection accuracy -- Perimeter systems must ignore stray movement caused by foliage, blowing debris or small animals, while still detecting human and vehicle intrusions at all times. Cameras with GPS-based analytics know the location and actual size of all objects in the field of view. This is the basis for size filters that accurately detect what’s relevant and ignore objects that don’t meet size criteria, greatly reducing nuisance alerts that can plague other solutions.
  
  
• Electronic stabilization reduces nuisance alarms -- Smart cameras operate by sensing movement, but outdoors, everything moves. Cameras mounted on a pole will sway from wind, vibrations, aircraft taking off or other factors. In all cases, choose cameras with built-in electronic stabilization to maintain a high probability of detection without nuisance alerts from these vibrations.
  
  
• Choose a camera built to withstand the elements -- To ensure dependability and continuous coverage, outdoor cameras need to be protected from humidity, sand and extreme temperatures. Otherwise, normal expansion and contraction due to thermal changes throughout the day could allow grit, dust or humidity to enter a camera’s housing, impacting the electronics and clouding the camera lens. Sealed, nitrogen-purged cameras tested to meet NEMA 4X standards will withstand the outdoor environment best, even in harsh environments.
  
  
• Determine an analytics camera's true detection range -- The best measure is the distance at which a camera can detect an intruder walking “inbound” or directly toward the camera, and not the less accurate “crossfield” distance. In fact, crossfield detection is often twice the distance of inbound detection ranges. Sometimes, vendors only publish crossfield detection, resulting in designs that leave large security gaps. Ask your manufacturer to demonstrate their inbound detection range to avoid gaps.
  
  
• Use overlapping camera views to avoid blind spots -- All cameras have a “blind spot” under the pole. This area must be viewed by an adjacent camera to ensure no gaps in security.
  
  
• Choose a validated, proven solution -- A recent TSA test at Buffalo Airport confirmed the detection accuracy of a thermal system in the challenging environment typical of many airports. According to the TSA's final report, the “evaluation team performed over 900 scenarios in which every alarm instance was accurately reported.” The test showed that it is possible to ensure accuracy, even in an uncontrolled environment with constant changes in lighting, wind, clouds and other variables, and to provide effective outdoor security that isn't plagued by nuisance alarms and mis-detects.
  
  
• Longer-range cameras reduce costs -- Airport perimeters often comprise large areas that can stretch several miles. A majority of a perimeter security solution’s costs relate to supporting infrastructure -- poles, cabling, connectivity and power. Longer-range cameras cover more area with fewer devices, up to twice the detection distance and four times the detection area than previous solutions. Longer ranges reduce the number of poles, trenching and communications needed for an airport's deployment, lowering costs. In fact, thermal cameras with video analytics are now much more cost-competitive with other technologies, meeting and even beating traditional solutions for securing perimeters.

Source: GSN Magazine

Perimeter Security for Airports.

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