IS-GPS-800A - US Coast Guard Navigation Center
IS-GPS-800A - US Coast Guard Navigation Center
IS-GPS-800A - US Coast Guard Navigation Center
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DIRECTION OF DATA FLOW FROM SV100 BITSMSB FIRST1915283669PRN8 BITSPageNo6 BITSWN a-n13 BITSt oa8 BITSReduced AlmanacPacket 133 BITSReduced AlmanacPacket 232 MSBsDIRECTION OF DATA FLOW FROM SV100 BITSMSB FIRST102135168Reduced AlmanacPacket 333 BITSReduced AlmanacPacket 433 BITSReduced AlmanacPacket 533 BITSReduced Almanac Packet 2 – 1 LSB201DIRECTION OF DATA FLOW FROM SV74 BITS234MSB FIRST251 274Reduced AlmanacPacket 633 BITSRESERVED17 BITSNOTE: Broadcast sequence of subframe 3 pages is a variable and, as such, users must not expect a fixedpattern of page sequence.CRC24 BITSFigure 3.5-4. Subframe 3, Page 3 – Reduced Almanac33 <strong>IS</strong>-<strong>GPS</strong>-<strong>800A</strong>8 June 2010