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FIGS 6-10: EXPERIENCE WITH HYBRID IR-VISIBLE VIEWING FROM LOW FLYING AIRCRAFT | FI
FIG 6.
The preflight checkout procedure |
for the airborne instrument assembly |
involves both coincidence and virtual
image plane adjustment, to correspond
with a convenient object chosen at
the distance to be flown from the
patrol objects. White = warm in the
hybrid view shown here.
hybrid view with black = warm. Since
'black' becomes transparent in the
Superviewer, this is an excellent
mode for airborne alignment should
this be necessary, since objects
are seen through their transparent
image positions only when properly
aligned.
FIG 8.
With isothermal contours replacing
the gray tones in the hybrid view,
remote temperature measurements
can be made in realtime, while air-
borne, or offline from the VTR play-
back, after landing.
FIG 9.
The observer, sitting up front beside
the pilot, uses the CCTV monitor to
follow what the IR operator is seeing.
The monitor's light shade and separate
brightness and contrast controls enable
the black-and-white TV imagery to be
seen even in the highest ambient light.
FIG 7.
Continuing the preflight checkout:
FIG 10.
A portable video tape cassette recorder
(VTR) is used to register the hybrid view
of airborne detection events, together
with simultaneous sound recordings from
the aircraft intercom system, relating
the circumstances of each event.