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Data Hacking

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204 Part III — <strong>Data</strong> <strong>Hacking</strong><br />

A Total number of messages<br />

B Current message number<br />

C Satellite PRN number (01 to 32)<br />

D GPS week ID (0 to 1023)<br />

E Satellite health<br />

F Orbital eccentricity<br />

G Almanac reference time<br />

H Sigma – Inclination angle<br />

I OmegaDOT – Rate of right ascension<br />

J Square root of semi-major axis<br />

K Omega – Argument perigee<br />

L Longitude of ascension node<br />

M Mean anomaly<br />

T1 Clock parameter<br />

T2 Clock parameter<br />

*hh Checksum<br />

BOD (Bearing: Origin to Destination)<br />

This NMEA sentence shows the bearing angle of a line calculated at the origin waypoint and<br />

extending to the destination waypoint for the active navigation leg of the journey.<br />

$GPBOD,xxx,T,yyy,M,DESTID,STARTID*hh<br />

xxx Bearing (True, from origin to destination)<br />

T True<br />

yyy Bearing (Magnetic, from origin to destination)<br />

M Magnetic<br />

DESTID Destination ID<br />

STARTID Origin ID<br />

*hh Checksum

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