IS-GPS-800A - US Coast Guard Navigation Center

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GPS PRNSignal No.3.2-3 L1C O Overlay Code Parameter Assignments (sheet 3 of 3)S1 PolynomialCoefficient (Octal) *(m ij )Initial 11 Bits (Octal † ) ** Final 11 Bits (Octal † )43 4563 1307 117044 5755 3763 156745 6127 1604 353446 4671 1021 251547 4511 2624 010448 4533 0406 334349 5357 0114 151050 5607 0077 217051 6673 3477 071052 6153 1000 337553 7565 3460 265054 7107 2607 330755 6211 2057 226256 4321 3467 216157 7201 0706 207658 4451 2032 120059 5411 1464 064360 5141 0520 200061 7041 1766 337762 6637 3270 160563 4577 0341 1552NOTES:* The polynomial coefficient is given as 1, m 10 , … , m 1 , 1. Thus octal 5111 corresponds tothe generator polynomial P 1 (x) = 1 + x 3 + x 6 + x 9 + x 11 .** The initial 11 bits also represent the initial condition, n 11, ……, n 1, for each PRN signalnumber. (See Figure 3.2-2)†The initial and the final bit values are obtained after dropping the initial bit value 0.14 IS-GPS-800A8 June 2010
FIXED LENGTH-10223 LEGENDRE SEQUENCE (INDEXED 0 THROUGH 10222)0 1 1 1 1 0 1 1 1 1 0 0 1 0 1 0 1 0 1 0 0 1 0 1 . . . 0 0 1 0 1 1 0 1 0 1 0 1 0 1 1 0 0 0 0 1 0 0 0 0. . .. . .WEIL INDEX(w)WEIL SEQUENCE WITH INDEX wW(0)W(1)W(2) . . . W(10222)INSERTION INDEX(p)EXPANSION SEQUENCE:0 1 1 0 1 0 0C(0)C(1)C(2) 0 1 1 0 1 0 0 C(10229)LENGTH-10230 RANGING CODE WITH WEIL INDEX w AND INSERTION INDEX pNOTE: WEIL INDICES AND INSERTION INDICES GIVEN IN TABLE 3.2-2Figure 3.2-1. Generation of L1C P -/L1C D -Codes15 IS-GPS-800A8 June 2010
Page 1 and 2: IS-GPS-800A8 June 2010GLOBAL POSITI
Page 3 and 4: REVISION RECORDLTR DESCRIPTION DATE
Page 5 and 6: 3.2.3.3 Cyclic Redundancy Check ...
Page 7 and 8: LIST OF FIGURESFigure 3.2-1. Genera
Page 9 and 10: 1. INTRODUCTION1.1 ScopeThis Interf
Page 11 and 12: 3. SIGNAL REQUIREMENTSThe requireme
Page 13 and 14: Carriers of the two L1C components
Page 15 and 16: 3.2.2 PRN Code CharacteristicsThe c
Page 17 and 18: The overlay codes are derived from
Page 19 and 20: 3.2-2 L1C Ranging Codes Parameter A
Page 21: GPS PRNSignal No.3.2-3 L1C O Overla
Page 25 and 26: 3.2.2.2 Non-Standard CodesThe non-s
Page 27 and 28: corresponding to MSB = 0. (A SV tra
Page 29 and 30: This code has the following charact
Page 31 and 32: 3.2.3.5 InterleavingThe 1748 encode
Page 33 and 34: 3.3 Signal ModulationThe signals mo
Page 35 and 36: Bit valueL1C DbitstreamSubcarrier s
Page 37 and 38: 3.5 Message DefinitionAs shown in F
Page 40 and 41: DIRECTION OF DATA FLOW FROM SV100 B
Page 46 and 47: 3.5.3 Subframe 2Subframe 2 provides
Page 48 and 49: Table 3.5-1. Subframe 2 Parameters
Page 50 and 51: 3.5.3.1 Transmission Week NumberBit
Page 52 and 53: 3.5.3.6 Ephemeris Parameter Charact
Page 54 and 55: Table 3.5-2. Elements of Coordinate
Page 56 and 57: The user shall use the broadcast UR
Page 58 and 59: where, ISC L1CD is provided to the
Page 60 and 61: 3.5.3.10.1 Integrity Status Flag (I
Page 62 and 63: The ionospheric data shall be updat
Page 64 and 65: 3.5.4.2.3 User Algorithm for Applic
Page 66 and 67: transmitted by the SVs will degrade
Page 68 and 69: Table 3.5-7.Midi Almanac Parameters
Page 70 and 71: MSBCDC = Clock Differential Correct
Page 72 and 73:
3.5.4.5 Subframe 3, Page 6 - TextSu
Page 74 and 75:
5. RESERVED66 IS-GPS-800A8 June 201
Page 76 and 77:
LSF - Leap Seconds FutureL1C - Comm
Page 78 and 79:
Table 6.2-1.Legendre Sequence (Octa
Page 80 and 81:
Table 6.2-2 LDPC Submatrix A for Su
Page 82 and 83:
Page 84 and 85:
Page 86 and 87:
Page 88 and 89:
Page 90 and 91:
Table 6.2-3. LDPC Submatrix B for S
Page 92 and 93:
Table 6.2-7. LDPC Submatrix T for s
Page 94 and 95:
Table 6.2-7. LDPC Submatrix T for s
Page 96 and 97:
Table 6.2-8. LDPC Submatrix A for s
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Table 6.2-8. LDPC Submatrix A for s
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Table 6.2-9. LDPC Submatrix B for S
Page 102 and 103:
Table 6.2-13. LDPC Submatrix T for
Page 104 and 105:
Table 6.2-16. Number of 1’s in LD
Page 106 and 107:
6.3 Supporting Material6.3.1 Additi
Page 108 and 109:
Table 6.3-1 Additional L1C Ranging
Page 110 and 111:
Page 112 and 113:
Page 114 and 115:
PRNSignalNo.Table 6.3-2. Additional
Page 116 and 117:
PRNSignalNo.Table 6.3-2 Additional
Page 118 and 119:
Page 120 and 121:
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