Galileo OS SIS ICD.indd - GSA - Europa

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�� t A S rect �t�iT8� � � s cE5� S � i TS E / 8 8 , 5 i�� t A P rect �t�iT8� � � s cE5� P � i TS E / 8 8 , 5 i�� The coeffi cients ASi and APi are according to Table 5. s, E5 s, E5 i 0 1 2 3 4 5 6 7 6 © European Union 2010 Document subject to terms of use and disclaimers p. ii-iii OD SIS ICD, Issue 1, February 2010 Eq. 5 2 ASi 2 �1 1 -1 � 2 �1 � 2 �1 -1 1 2 �1 2 APi � 2 �1 1 -1 2 �1 2 �1 -1 1 � 2 �1 Table 5. AltBOC Subcarrier Coeffi cients One period of the sub-carrier functions sc E5-S and sc E5-P is shown in Figure 4. Figure 4. One Period of the Two Subcarrier Functions Involved in AltBOC Modulation 2.3.1.3. Equivalent Modulation Type Equivalently, the AltBOC complex baseband signal s E5(t) can be described as an 8-PSK signal according to Eq. 6. The corresponding phase states are illustrated in Figure 5. sE 5 � � � � 4 � � � �� t � exp j k�� t with k�� t � �1, 2, 3, 4, 5, 6, 7, 8 �, Figure 5. 8-PSK Phase-State Diagram of E5 AltBOC Signal Eq. 6
The relation of the 8 phase states to the 16 different possible states of the quadruple e E5a-I(t), e E5a-Q(t), e E5b-I(t), and e E5b-Q(t) depends also on time. Therefore, time is partitioned fi rst in sub-carrier intervals T s,E5 and further sub-divided in 8 equal sub-periods. The index i Ts of the actual sub-period is given by Eq. 7 and determines which relation between input quadruple and phase states has to be used. � 8 iT s � integer part� �t �� Ts, E5 modulo � Ts, E5 �� with iT s � �0, 1, 2, 3, 4, 5, 6, 7 � Eq. 7 The dependency of phase-states from input-quadruples and time is given in Table 6. i Ts 2.3.2. E6 Signal Input Quadruples eE5a-I -1 -1 -1 -1 -1 -1 -1 -1 1 1 1 1 1 1 1 1 eE5b-I -1 -1 -1 -1 1 1 1 1 -1 -1 -1 -1 1 1 1 1 eE5a-Q -1 -1 1 1 -1 -1 1 1 -1 -1 1 1 -1 -1 1 1 eE5b-Q -1 1 -1 1 -1 1 -1 1 -1 1 -1 1 -1 1 -1 1 t’ = t modulo Ts,E5 t’ k according to sE5(t)=exp(jkπ/4) 0 [0,Ts,E5/8[ 5 4 4 3 6 3 1 2 6 5 7 2 7 8 8 1 1 [Ts,E5/8, 2 Ts,E5/8[ 5 4 8 3 2 3 1 2 6 5 7 6 7 4 8 1 2 [2 Ts,E5/8, 3 Ts,E5/8[ 1 4 8 7 2 3 1 2 6 5 7 6 3 4 8 5 3 [3 Ts,E5/8, 4 Ts,E5/8[ 1 8 8 7 2 3 1 6 2 5 7 6 3 4 4 5 4 [4 Ts,E5/8, 5 Ts,E5/8[ 1 8 8 7 2 7 5 6 2 1 3 6 3 4 4 5 5 [5 Ts,E5/8, 6 Ts,E5/8[ 1 8 4 7 6 7 5 6 2 1 3 2 3 8 4 5 6 [6 Ts,E5/8, 7 Ts,E5/8[ 5 8 4 3 6 7 5 6 2 1 3 2 7 8 4 1 7 [7 Ts,E5/8, Ts,E5[ 5 4 4 3 6 7 5 2 6 1 3 2 7 8 8 1 Table 6. Look-up Table for AltBOC Phase States Figure 6 provides a generic view of the E6 signal generation. C E6-B C E6-C D E6-B e E6-B e E6-C 1 � 2 – Figure 6. Modulation Scheme for the E6 Signal The E6 signal B and C components are generated according to the following ● e E6-B from the C/NAV navigation data stream D E6-B modulated with the encrypted ranging code C E6-B ● e E6-C (pilot component) from the ranging code C E6-C Equation 8 provides their mathematical description. e e E6� B E6�C ( t) � ( t) � � � � i�� i�� c �� E6�C , i rectT � L C , E 6�C E 6�C © European Union 2010 Document subject to terms of use and disclaimers p. ii-iii OD SIS ICD, Issue 1, February 2010 s E6 �c �� E6� B, i d E6� B � L D C � , 6� 6� E 6 B C E B E B , �� i rectT �tiTC, E6� B � �tiT� C, E6�C � �� Eq. 8 7
Page 1 and 2: European uropean GNSS (Galileo) Ope
Page 3 and 4: and/or standardisation purposes acc
Page 5 and 6: Table of Contents 1. Introduction .
Page 7 and 8: C.3. Primary Codes for the E5a-I Co
Page 9 and 10: List of Tables Table 1. Carrier Fre
Page 11 and 12: 1. Introduction 1.1. Document Scope
Page 13 and 14: 2.1.3. Receiver Reference Bandwidth
Page 15: e e e e E5a �I E5a �Q E5b� I
Page 19 and 20: Component (Parameter Y) Sub-carrier
Page 21 and 22: For purposes of establishing user r
Page 23 and 24: 3.3. Primary Codes Generation The p
Page 25 and 26: Code No Start Value Initial Sequenc
Page 27 and 28: Code No Table 17. Base Register 2 S
Page 29 and 30: Code Identifi er Code Length No. of
Page 31 and 32: Code Identifi er Code Length No. of
Page 33 and 34: SVID E5a-I E5a-Q E5b-I E5b-Q 27 E5a
Page 35 and 36: SVID E5a-I E5a-Q E5b-I E5b-Q 21 CS2
Page 37 and 38: 4.1.4. FEC Coding and Interleaving
Page 39 and 40: 4.2.3. F/NAV Frame Layout The F/NAV
Page 41 and 42: Subframe 12 4.2.4. F/NAV Page Conte
Page 43 and 44: Figure 15. I/NAV Message Structure
Page 45 and 46: Even/odd=0 Page Type E5b-I E1-B Res
Page 47 and 48: 4.3.4. I/NAV Nominal Frame Layout T
Page 49 and 50: Word Type 3: Ephemeris (3/4) and SI
Page 51 and 52: Even/odd=0 Page Type E5b-I E1-B Dum
Page 53 and 54: Start bit = 1 Part (5/8) Part (6/8)
Page 55 and 56: Parameter Defi nition Bits Scale fa
Page 57 and 58: leap seconds. Since the next leap s
Page 65 and 66: Table 79. Almanac Parameters * Para
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7. Annex B - Defi nitions and Nomen
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59 Component Primary Code Length (c
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4BBCEA32E5B5D0EED15F88BF5D96D058E6D
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D2B53363A548E6476647C10F55611469828
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2768ECABBFBEE87FBF1DAA992C8439602B1
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E 1 9 C 6 9 C 3 8 6 8 C 7 5 0 7 D 0
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16BAF1D9361126F3514557403415F286C8E
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B0A1427F7EFC07EFCC62DDC5455A77B57D3
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9FA64FB70902BA09988A30697F110B892D7
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1DCB6C9F0F7C5E57BD0A7875D4B2D8E31AE
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77 © European Union 2010 Document
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F C 6 9 7 2 F C E D B 2 3 F A 8 3 7
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D 6 3 3 6 C 7 C E A E 8 C C 3 1 6 2
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7 4 B A 0 8 3 E D 5 5 3 6 3 7 6 0 A
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1 F 8 0 2 2 4 2 6 F 6 8 5 1 9 B 5 4
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E 1 B C o d e N o 3 3 9 6 1 4 0 8 B
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D F 9 6 B E C F 1 1 2 4 5 5 1 D 4 8
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1 2 1 F 7 0 3 D 2 F 4 8 F C D A 3 1
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5 3 B D E 3 1 0 2 8 4 5 A 7 9 A 2 0
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A 0 0 3 B D D 3 5 F 5 4 7 E 5 0 3 9
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E 1 C C o d e N o 2 7 9 8 C D F C B
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C 8 9 C 4 9 3 C 1 1 6 1 5 7 D 2 0 D
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9 9 E A 5 0 F 7 C 9 E B 3 8 9 9 0 F
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9. Annex D - Licence Agreement for
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1.12. OS SIS ICD - the Open Service
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around the scope, terms and conditi
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ARTICLE 9 - Infringements by third
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For the EUROPEAN COMMISSION: For ad
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Territorial coverage File reference
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10. Annex E - Licence Agreement For
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1.11 Licensee Background - shall me
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operation of the Infrastructure Dev
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ARTICLE 9 - Infringements by third
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For the EUROPEAN UNION: For adminis
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Territorial coverage File reference
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