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|  MIL-N-812O7A(AS)
Bearing Measurement Accuracy
3.4.8.2
Digital Bearing Accuracy - The equipment shall
3.4.8.2.1
have bearing errors no greater than shown below, under static
tracking conditions, when both 15 Hz and 135 Hz information are
present.
Signal Strength
Bearing Accuracy
-82 dBm to 0 dBm
0.5
1.5
-90 dBm to -82 dBm
below -90 dBm
2.0
The increase in error under dynamic tracking conditions shall not
exceed an additional 1 at a bearing rate of change of 5
/second. The above shall apply at all bearings and within the
modulation limits of 15% to 55% with modulation indexes not more
than 0.30 nor less than 0.07.
Analog Bearing Accuracy - The equipment shall
3.4.8.2.2
have bearing errors no greater than shown below, under static
tracking conditions, when both 15 Hz and 135 Hz information are
present:
Signal Strength
Bearing Accuracy
-82 dBm to 0 dBm
1.0
-90 dBm to -82 dBm
2.0
below -90 dBm
2.5
The increase in error under dynamic tracking conditions shall not
exceed an additional 1 at a bearing rate of change of 5
/second. The above shall apply at all bearings and within the
modulation limits of 15% to 55% with modulation indexes not more
than 0.30 nor less than 0.97.
15 Hertz Digital Bearing Accuracy - The
3.4.8.2.3
equipment shall have bearinq errors no greater than shown below,
under static tracking conditions, when operating with 15 Hz
information only. This requirement shall be applicable over a 7%
to 40% range of modulation, with and without auxiliary reference
groups.
15.
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