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C NMEA 0183
226 Copernicus GPS Receiver
AL - Almanac Page
This sentence can be used to query or set almanac data for a specific satellite.
Following is the query format:
$PTNLQAL,xx*hh<CR><LF>
Following is the set or response format.
$PTNLaAL,xx,x.x,hh,hhhh,hh,hhhh,hhhh,hhhhhh,hhhhhh,hhhhhh,hhhhhh,hhh,hhh*
hh<CR><LF>
Table C.14 Almanac Page
Field Description
xx Satellite ID
Table C.15 Almanac Page, Set or Response Format
Field Description
a Mode (S = set; R = Response).
xx Satellite ID, 01-32.
x.x GPS week number, variable length integer, 4 digits maximum.
hh SV health, HEX data conforming to GPS ICD 200.
hhhh Eccentricity, HEX data conforming to GPS ICD 200.
hh t_oa, almanac reference time, HEX data conforming to GPS ICD 200.
hhhh sigma_I,HEX data conforming to GPS ICD 200.
hhhh OMEGADOT, HEX data conforming to GPS ICD 200.
hhhhhh root_a, HEX data conforming to GPS ICD 200.
hhhhhh Omega, HEX data conforming to GPS ICD 200.
hhhhhh Omega_0, HEX data conforming to GPS ICD 200.
hhhhhh M_O, HEX data conforming to GPS ICD 200.
hhh a_fO, HEX data conforming to GPS ICD 200.
hhh a_fl, HEX data conforming to GPS ICD 200.