Avionics News October 2019 - 63

From FLIR forward: Enhanced-vision and
Synthetic vision systems: It's not what you
synthetic-vision systems bring new clarity
see, it's what the computer remembers
Forward-looking infrared radar - or radiometer. FLIR.
Today's increasingly common synthetic vision systems
Unlike radar - a system for using radio waves to detect
are a benefit from technology advanced through computer
the presence, direction, distance, and speed of aircraft, ships,
programming and satellite scans of the world's landscape,
and other objects, FLIR uses the infrared signature naturally
tapping another source for producing terrain images.
emitted by objects to produce a visible image out of light
Over several years, the quality and detail of those
outside humans' visible spectrum.
scans improved to ever-smaller levels to the point that
Early incarnations of FLIR required expensive, superprogrammers could produce near-photographic terrain
cooled sensors and complex electronics processing to produce
images from the high resolution of newly scanned data.
a usable image on a cathode ray tube
So, we see a vision synthesized from
screen - essentially a monochromatic
the ones and zeros of computer data -
television screen.
no camera or light sensor involved.
The advent of FLIR advanced
Early incarnations of the then-new
TODAY, A GROWING
the capabilities of armed forces that
synthetic
vision systems produced
NUMBER OF SYSTEMS
deployed the capability and let war
little more than wire-frame renderings
EXIST THAT MERGE
fighters differentiate between friends
of terrain - specifically mountains and
THE CAPABILITIES OF
and foes in battlefields high and low.
hills, valleys, rivers and lakes. Good
BOTH EVS AND SVS TO
But the equipment was sensitive,
enough to see and avoid obstacles and
LEVERAGE A HYBRID
heavy and power hungry. So over
terrain, but not detailed enough for
IMAGE COMBINING
the years, scientists focused on
close flying.
THE STRENGTHS OF
developing new sensors lacking those
But as repeated scans moved
BOTH SYSTEMS AND
disadvantages. The results included
to
smaller resolutions, the quality
OVERRIDING THE
wearable night-vision goggles and
of terrain images evolved toward
SHORTCOMINGS OF
mobile versions suitable for a wider
photographic quality images - wholly
EACH IN SOMETHING
range of environments.
assembled from computer code, no
NEW: CVS, OR COMBINED
Another result: new thermal
camera necessary.
VISION SYSTEM.
imaging devices suitable for light
aircraft sensing infrared in a wider
EVS versus SVS: Important
range of light frequencies. Today,
differences exist
the technology has been sized in ever-smaller packaging
EVS, as noted, translates what its image sensor detects
delivering ever-higher image quality.
into an image viewable on a cockpit display. Although it's
Today's enhanced vision systems go further than ever
what-you-see-is-what-you-have, atmospheric contaminants
before, some combining IR and visible light images for
can and do reduce the utility of some EVS sensors. Smoke
improved performance in all conditions, day and night.
particles, for example, can reduce the ability of some
While these advances started years earlier, it wasn't until
sensors to detect infrared emitted by objects in the sensor's
2001 when Gulfstream became the first civilian aircraft
field of view.
manufacturer to develop and certify an EVS for its aircraft -
But what it sees is there - or was there within a few
an EVS produced by Elbit's Kollsman.
minutes prior while a ghost-like image remains of an object
Initially, the Federal Aviation Administration permitted use
since relocated.
of the EVS only to 100 feet above touchdown zone, providing
SVS, conversely, depends not on an image sensor, but on
that no other restrictions applied. Initially, operators flew
computer recall of the cumulative scans used to generate
unsure of the latitude they had to descend below that height.
the image database. If an object wasn't present for a scan,
Then in 2004, the FAA resolved the question by amending
the system memory has no basis for recreating that object
Federal Aviation Regulation 91.175.(5) to allow lower
on the SVS display. Be that object a plane, person, bird or
descents - the first time an EFVS gave a concrete, operational,
valuable advantage over unaided vision.
Continued on following page
avionics news

*

october

2019

63



Avionics News October 2019

Table of Contents for the Digital Edition of Avionics News October 2019

No label
Avionics News October 2019 - No label
Avionics News October 2019 - Cover1
Avionics News October 2019 - Cover2
Avionics News October 2019 - 1
Avionics News October 2019 - 2
Avionics News October 2019 - 3
Avionics News October 2019 - 4
Avionics News October 2019 - 5
Avionics News October 2019 - 6
Avionics News October 2019 - 7
Avionics News October 2019 - 8
Avionics News October 2019 - 9
Avionics News October 2019 - 10
Avionics News October 2019 - 11
Avionics News October 2019 - 12
Avionics News October 2019 - 13
Avionics News October 2019 - 14
Avionics News October 2019 - 15
Avionics News October 2019 - 16
Avionics News October 2019 - 17
Avionics News October 2019 - 18
Avionics News October 2019 - 19
Avionics News October 2019 - 20
Avionics News October 2019 - 21
Avionics News October 2019 - 22
Avionics News October 2019 - 23
Avionics News October 2019 - 24
Avionics News October 2019 - 25
Avionics News October 2019 - 26
Avionics News October 2019 - 27
Avionics News October 2019 - 28
Avionics News October 2019 - 29
Avionics News October 2019 - 30
Avionics News October 2019 - 31
Avionics News October 2019 - 32
Avionics News October 2019 - 33
Avionics News October 2019 - 34
Avionics News October 2019 - 35
Avionics News October 2019 - 36
Avionics News October 2019 - 37
Avionics News October 2019 - 38
Avionics News October 2019 - 39
Avionics News October 2019 - 40
Avionics News October 2019 - 41
Avionics News October 2019 - 42
Avionics News October 2019 - 43
Avionics News October 2019 - 44
Avionics News October 2019 - 45
Avionics News October 2019 - 46
Avionics News October 2019 - 47
Avionics News October 2019 - 48
Avionics News October 2019 - 49
Avionics News October 2019 - 50
Avionics News October 2019 - 51
Avionics News October 2019 - 52
Avionics News October 2019 - 53
Avionics News October 2019 - 54
Avionics News October 2019 - 55
Avionics News October 2019 - 56
Avionics News October 2019 - 57
Avionics News October 2019 - 58
Avionics News October 2019 - 59
Avionics News October 2019 - 60
Avionics News October 2019 - 61
Avionics News October 2019 - 62
Avionics News October 2019 - 63
Avionics News October 2019 - 64
Avionics News October 2019 - 65
Avionics News October 2019 - 66
Avionics News October 2019 - 67
Avionics News October 2019 - 68
Avionics News October 2019 - 69
Avionics News October 2019 - 70
Avionics News October 2019 - 71
Avionics News October 2019 - 72
Avionics News October 2019 - 73
Avionics News October 2019 - 74
Avionics News October 2019 - 75
Avionics News October 2019 - 76
Avionics News October 2019 - 77
Avionics News October 2019 - 78
Avionics News October 2019 - 79
Avionics News October 2019 - 80
Avionics News October 2019 - Cover3
Avionics News October 2019 - Cover4
http://www.brightcopy.net/allen/avne/58-4
http://www.brightcopy.net/allen/avne/58-3
http://www.brightcopy.net/allen/avne/58-2
http://www.brightcopy.net/allen/avne/58-1
http://www.brightcopy.net/allen/avne/57-12
http://www.brightcopy.net/allen/avne/57-11
http://www.brightcopy.net/allen/avne/57-10
http://www.brightcopy.net/allen/avne/57-9
http://www.brightcopy.net/allen/avne/57-8
http://www.brightcopy.net/allen/avne/57-7
http://www.brightcopy.net/allen/avne/57-6
http://www.brightcopy.net/allen/avne/57-5
http://www.brightcopy.net/allen/avne/57-4
http://www.brightcopy.net/allen/avne/57-3
http://www.brightcopy.net/allen/avne/57-2
http://www.brightcopy.net/allen/avne/57-1
http://www.brightcopy.net/allen/avne/56-12
http://www.brightcopy.net/allen/avne/56-11
http://www.brightcopy.net/allen/avne/56-10
http://www.brightcopy.net/allen/avne/56-9
http://www.brightcopy.net/allen/avne/56-8
http://www.brightcopy.net/allen/avne/56-7
http://www.brightcopy.net/allen/avne/56-6
http://www.brightcopy.net/allen/avne/56-5
http://www.brightcopy.net/allen/avne/56-4
http://www.brightcopy.net/allen/avne/56-3
http://www.brightcopy.net/allen/avne/56-2
http://www.brightcopy.net/allen/avne/56-1
http://www.brightcopy.net/allen/avne/55-12
http://www.brightcopy.net/allen/avne/55-11
http://www.brightcopy.net/allen/avne/55-10
http://www.brightcopy.net/allen/avne/55-9
http://www.brightcopy.net/allen/avne/55-8
http://www.brightcopy.net/allen/avne/55-7
http://www.brightcopy.net/allen/avne/55-6
http://www.brightcopy.net/allen/avne/55-5
http://www.brightcopy.net/allen/avne/55-4
http://www.brightcopy.net/allen/avne/55-3
http://www.brightcopy.net/allen/avne/55-02
http://www.brightcopy.net/allen/avne/55-01
http://www.brightcopy.net/allen/avne/54-12
http://www.brightcopy.net/allen/avne/54-11
http://www.brightcopy.net/allen/avne/54-10
http://www.brightcopy.net/allen/avne/54-9
http://www.brightcopy.net/allen/avne/54-8
http://www.brightcopy.net/allen/avne/54-7
http://www.brightcopy.net/allen/avne/54-6
http://www.brightcopy.net/allen/avne/54-5
http://www.brightcopy.net/allen/avne/54-4
http://www.brightcopy.net/allen/avne/54-3
http://www.brightcopy.net/allen/avne/54-2
http://www.brightcopy.net/allen/avne/54-1
http://www.brightcopy.net/allen/avne/53-12
http://www.brightcopy.net/allen/avne/53-11
http://www.brightcopy.net/allen/avne/53-10
http://www.brightcopy.net/allen/avne/53-9
http://www.brightcopy.net/allen/avne/53-8
http://www.brightcopy.net/allen/avne/53-7
http://www.brightcopy.net/allen/avne/53-6
http://www.brightcopy.net/allen/avne/53-5
http://www.brightcopy.net/allen/avne/53-4
http://www.brightcopy.net/allen/avne/53-3
http://www.brightcopy.net/allen/avne/53-2
http://www.brightcopy.net/allen/avne/53-1
http://www.brightcopy.net/allen/avne/52-12
http://www.brightcopy.net/allen/avne/52-11
http://www.brightcopy.net/allen/avne/52-10
http://www.brightcopy.net/allen/avne/52-9
http://www.brightcopy.net/allen/avne/52-8
https://www.nxtbook.com/allen/avne/52-7
https://www.nxtbook.com/allen/avne/52-6
https://www.nxtbook.com/allen/avne/52-5
https://www.nxtbook.com/allen/avne/52-4
https://www.nxtbook.com/allen/avne/52-3
https://www.nxtbook.com/allen/avne/52-2
https://www.nxtbook.com/allen/avne/52-1
https://www.nxtbook.com/allen/avne/51-12
https://www.nxtbook.com/allen/avne/51-11
https://www.nxtbook.com/allen/avne/51-10
https://www.nxtbook.com/allen/avne/51-9
https://www.nxtbook.com/allen/avne/51-8
https://www.nxtbook.com/allen/avne/51-7
https://www.nxtbook.com/allen/avne/51-6
https://www.nxtbook.com/allen/avne/51-5
https://www.nxtbook.com/allen/avne/51-4
https://www.nxtbook.com/allen/avne/51-3
https://www.nxtbook.com/allen/avne/51-2
https://www.nxtbook.com/allen/avne/51-1
https://www.nxtbook.com/allen/avne/50-12
https://www.nxtbook.com/allen/avne/50-11
https://www.nxtbook.com/allen/avne/50-10
https://www.nxtbook.com/allen/avne/50-9
https://www.nxtbook.com/allen/avne/50-8
https://www.nxtbook.com/allen/avne/50-7
https://www.nxtbook.com/allen/avne/50-6
https://www.nxtbook.com/allen/avne/50-5
https://www.nxtbook.com/allen/avne/50-4
https://www.nxtbook.com/allen/avne/50-3
https://www.nxtbook.com/allen/avne/50-2
https://www.nxtbook.com/allen/avne/50-1
https://www.nxtbook.com/allen/avne/49-12
https://www.nxtbook.com/allen/avne/49-11
https://www.nxtbook.com/allen/avne/49-10
https://www.nxtbook.com/allen/avne/49-9
https://www.nxtbook.com/allen/avne/49-8
https://www.nxtbook.com/allen/avne/49-7
https://www.nxtbook.com/allen/avne/49-6
https://www.nxtbook.com/allen/avne/49-5
https://www.nxtbook.com/allen/avne/49-4
https://www.nxtbook.com/allen/avne/49-3
https://www.nxtbook.com/allen/avne/49-2
https://www.nxtbook.com/allen/avne/49-1
https://www.nxtbook.com/allen/avne/48-12
https://www.nxtbook.com/allen/avne/48-11
https://www.nxtbookmedia.com