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Horizontal position, air transport mode. |
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|  MIL-D-70789A (AR)
3.6.1.1.4
Altitude, exclusive ZUPT mode/other. When
operating in the Exclusive ZUPT Mode, with zero-velocity updates
at 4 minute travel intervals, altitude error shall not exceed 10
meters PE and no more than 1.0 percent of the absolute values of
altitude errors shall exceed 39 meters.
The specification applies when distance traveled is in the range
of 0 to 35,000 meters from the last position update point and
latitude is within the range of 75 south to 75 north.
This requirement shall also apply when operating in the Odometer
mode with zero-velocity updates at 10 minute travel intervals
throughout a mission.
3.6.1.1.5
Horizontal position, air transport mode. When
operating in the Air Transport Mode, horizontal position error
shall not exceed 1 nmi/h Circular Error Probable (CEP) Per hour
of transport time after takeoff. Prior to takeoff, the
appropriate Odometer Mode or Exclusive ZUPT Mode/Other
requirements apply.
3.6.1.1.6 Altitude, air transport
mode. When operating in
the Air Transport Mode, altitude shall
be fixed for the duration
of the transport after takeoff. Prior
to takeoff, the
appropriate Odometer Mode or Exclusive
ZUPT Mode/Other
requirements apply.
Horizontal Position, marine transport mode. When
3.6.1.1.7
operating in the Marine Transport Mode, horizontal position error
shall not exceed 1 nmi/h Circular Error Probable (CEP) per hour
of transport time.
Altitude, marine transport mode. When operating
3.6.1.1.8
in the Marine Transport Mode, altitude shall be fixed for the
duration of the transport.
3.6.1.1.9 Azimuth. When the DRU is mounted and aligned to a
Pointing Device; Vehicle azimuths, grid or geodetic, are
approximations without accuracy specifications.
3.6.1.1.9.1 Normal align. Upon completion of Normal Align
from a cold start, the Pointing Device Grid or Geodetic Azimuth
error shall not exceed 0.67 mil PE. No more than 1.0 percent of
the absolute values of Pointing Device Grid or Geodetic Azimuth
errors shall exceed 2.6 mils.
Upon
completion
of
3.6.1.1.9.2
Stored
heading.
Stored Heading Align, the Pointing Device Grid or Geodetic
Azimuth error with respect to stored heading shall not exceed 0.1
mil RMS.
56
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