Javad JNSGyro-4T, Operator'S Manual

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www.javad.com JNSGyro-4T Operator’s Manual B - 1
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PPENDIX
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Specifications
JNSGyro-4T is actually four 20-channel geodetic quality dual frequency GPS/
GNSS receivers packaged in one small box that is in turn connected to four
antennas. The dual frequency code and carrier data from four antennas are
processed to determine the three orientation angles and three dimensional
position up to 20 times per second. The JNSGyro-4T can also be operated in
RTK or DGPS mode from an external base station to provide highly accurate
positionand velocity.
Notice: Performance specifications assume a minimum of 6 GPS
satellites above 15 degrees in elevation and adherence
to the procedures recommended in this manual.
Notice: In areas of high multipath, during periods of large PDOP,
and during periods of increased ionospheric activity,
performance may degrade.
Notice: Use robust checking procedures in areas of extreme
multipath or under dense foliage.