Chapter 6 Flashcards
What does IDS stand for?
Intrusion Detection System
An Intrusion Detection System generally includes what 3 things
- Sensors, 2. Annunciators, 3. Communication or Transmission Mechanism
What does PD stand for?
Probability of Detection
The three main characteristics of intrusion sensor performance are:
Probability of Detection, Nuisance Alarm Rate, and Vulnerability to Defeat
What does NAR stand for?
Nuisance Alarm Rate
____ is any alarm signal that is not caused by an adversary.
Nuisance Alarm Rate (NAR)
What does FAR stand for?
False Alarm Rate
A ____ occurs when the source of the alarm is unknown
False Alarm Rate (FAR)
At least how many continuous likes of protection should be used in high security applications.
At least two
How many ways are there to defeat a sensor and what are they.
- Bypass, The adversary goes around or beyond the sensor’s capabilities.
- Spoof, goes through the protected zone without an alarm being generated.
The ___ decreases as the time to asses each alarm increases.
Probability of Detection (PD)
___ and ___ are used to describe the effectiveness of the sensor.
Probability of Detection (PD) and Confidence Level (CL)
What does CL stand for?
Confidence level
___ is the detection communication lines being cut or altered.
Line Supervision
Line supervision is typically accomplished by using a ___.
End-of-line resistors
In a ___, both sensors have to be activated for the alarm to trip, which reduced the percentage of nuisance alarms,
making these sensors a great choice for reliability.
Dual Technology Sensor
The drawback of a Dual Technology Sensor is that it has a higher ___ than an Individual Technology sensor.
Probability of Detection (PD)
___ use Doppler shift technology. They penetrate most areas and materials and nuisance alarms can be generated from adjacent areas.
Microwave Sensors
To limit coverage of Microwave sensors, use a ___.
Variable Range Cut-off circuit
Because of the higher resolution of the ___, the greater the accuracy of and performance of the ___, they typically operate better for interior applications
VMD
Interior sensors may be characterized by three main applications.
- Boundary Penetration Sensors
- Interior Motion Sensors
- Proximity sensors
In ___ applications, a dual technology sensor should not be used in place of two separately mounted sensors due to the reduced PD
High Security
___ are susceptible to air movement and should not be installed near stairwells or hallways, but rather into rooms or areas where only infrequent access occurs
Ultrasonic Sensors
An ___ should have the ability to perform a self-test on a regular basis.
Intrusion Detection System (IDS)
An ___ system is the part of the electronic security system that transports alarm signals and assessment information to a central point and presents the information to a human operator. It collects data and enables the operator to enter commands to control the system.
Alarm Communications & Display (AC&D
AC&D displays are typically located ___ and should not require much head or eye movement form the operators line of sight for the primary interface area (30 degree cone).
In the center of the console
What does AC&D stand for?
Alarm Communications & Display
A ___ is often referred to as a “metal detector” but has many differences to the modern-day metal detectors, and should not be used for contraband detection.
Magnetometer
___ are designed to be in close proximity to small amounts of steel and other metals in the surrounding areas; however, a ___ should not be installed very close or against a steel support beam.
Metal detectors
___ detectors may not penetrate heavy metals (like a metal shipping container or some metal compartments on vehicles); however, a high energy or multiple energy x-ray can be used for screening.
Conventional x-ray
What does QR stand for?
Quadrupole Resonance
___ technology uses low radio waves to direct the presence of nitrogen-rich materials, which are found in bulk explosives. ___ technology is compact and has a low cost (about 100,000)
Quadrupole Resonance (QR)
___ uses a spectroscopic technique. It uses laser interrogation, which is followed by light analysis. It is not stave for package searches.
Ramen Analysis
What does MS stand for?
Mass Spectrometry
___ uses magnetic and electrical fields to process ions and determine the mass-to-charge ratio.
Mass Spectrometry
___ has applications in law enforcement and military for both drugs and explosives and is a good choice when mobility is required. The acquisition costs for the canine are low, but the maintenance, training and handler labor costs are very expensive over time.
Canine Olfaction
