Geometrics G-822A, Руководство по эксплуатации

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Geometrics, Inc. G-822/G-823 Magnetometer Manual
9
T he top diagram to the left shows
an alternative sensor orientation
for operation in equatorial
latitudes. This zone is the same
as that shown in figure 8 except
that the sensor is rotated about its
equator by 45º allowing N-S, E-W
survey lines. It includes those
areas where the absolute
inclination of the Earth’s
magnetic field is less than or
equal to 25º.
As with the sensor orientation
shown in Figure 8, there are
restrictions on the direction of
travel when using this sensor
orientation in this region. The
bottom diagram to the left shows
the flight directions where the
sensor will produce adequate
signal strength. These flight
directions are 60
0
wide and are
centered on the cardinal magnetic
field directions 0
0
, 90
0
, 180
0
, and
270
0
.