Home' RTCA Documents for Review : DO-230H FRAC Contents Appendix B
©2017 RTCA, Inc.
Fingerprint Minutiae Points - Features used in most fingerprint recognition systems that include such
information as the coordinates of points where ridge lines either bifurcate or end.
Fingerprint Recognition – A biometric process that uses the physical structure of an individual’s
fingerprint ridge pattern for recognition purposes.
FIPS 201– Federal Information Processing Standard that provides for a common means of identification
for persons entering US government facilities.
Focal Length – The distance from the centerline of the lens to the camera pick-up device, the focal length
determines the size of the image and the angle of the field of view as seen by the camera through the lens.
The combination of the focal length and the CCD format determines a camera's field of view – thus, the
shorter the focal length, the wider the field of view.
fps – Frames-Per-Second or Frame Frequency is the rate at which an imaging device produces unique
consecutive images (frames) and also expressed in progressive scan monitors as hertz (Hz).
FRAC – First Responder Authentication Credential a smart identity credentialing system to allow
emergency response officials (EROs) across a region to improve quick and easy access to government
buildings and reservations in the event of a terrorist attack or other disaster.
Frames – The individual video images that make up a moving sequence.
Frame Rate – Playback speed or frame frequency as determined in frames per second.
FRR – False Reject Rate
FTA – Failure to Acquire
FTE – Failure to Enroll
Gamma – A display setting related to the brightness of the middle tones of an image. Adjusting the gamma
of an image will lighten or darken the mid-tones (the middle-gray levels), without significantly changing
the dark and light areas (the shadows and highlights).
Gateway – A bridge between two networks.
GB – Gigabytes (billions of bytes)
Global Linking – An input at one access control panel affecting the output at another.
Global Security –An access control package capability permitting protection across a variety of mainframe
environments to provide users with a common security interface to all.
GSC-IS – Government Smart Card – Interoperability Specification (now superseded by PIV-Two
Ground Loop – A current, almost always unwanted, in a conductor connecting two points that are supposed
to be at the same potential (often ‘ground’), but are actually at different potentials. Ground loops created
by improperly designed or improperly installed equipment are a major cause of noise and interference in
audio and video systems and can create an electric shock hazard, since ostensibly "grounded" parts of the
equipment, which are often accessible to users, are not at ground potential. Signal interference may appear
as a vertical crawling of the picture or an oscillating hum in the audio.
GSR – Ground Surveillance Radar
Guard – An individual assigned by the airport for guard duties.
Hand Geometry Recognition – A biometric process that uses the physical structure of an individual’s
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