Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 3438

b) 1 some of the navigation data are not valid. A 23/11/06 2007/70/II. szám Annex 10 — Aeronautical Communications Volume I The 5 LSBs shall indicate the health of the signal components in accordance with 3.1.1.3.3.4. The health indication shall be provided relative to the capabilities of each satellite as designated by the configuration code in 3.1.1.3.3.5. Any satellite that does not have a certain capability shall be indicated as “healthy” if the lack of this capability is inherent in its design or it has been configured into a mode which is normal from a receiver standpoint and does not require that capability. Additional health data shall be given in subframes 4 and 5. Note The data given in subframe may differ from that shown in subframes and or of other satellites since the latter may be updated at a different time 3.1.1.3.1.4 Issue of data cloc (I DC) Bits 23 and 24 of word 3 in subframe 1 shall be the 2 MSBs of the 10-bit IODC term. Bits 1 through 8 of word 8 in subframe 1 shall contain the 8 LSBs of the IODC. The IODC shall indicate the issue number of data set. The transmitted IODC shall be different from any value transmitted by the satellite during the preceding 7 days. Note The relationship between the I DC and the Issue of Data Ephemeris (I DE) terms is defined in 3.1.1.3.1.5 Estimated group delay differential Bits 17 through 24 of word 7 shall contain the correction term, TGD, to account for the effect of satellite group delay differential. Note T D does not include any C A to P( ) code relative group delay error 3.1.1.3.1.6 Satellite cloc correction parameters Bits 9 through 24 of word 8, bits 1 through 24 of word 9, and bits 1 through 22 of word 10 shall contain the parameters needed by the users for apparent satellite clock correction (toc, af2, af1andaf0). 3.1.1.3.1.7 Reserved data fields. Reserved data fields shall be as indicated in Table B-4. All reserved data fields shall support valid parity within their respective words. 3.1.1.3.2 Subframes and satellite ephemeris data Subframes 2 and 3 shall contain the ephemeris representation of the transmitting satellite. 3.1.1.3.2.1 Ephemeris parameters The ephemeris parameters shall be as indicated in Table B-5. For each parameter in subframe 2 and 3, the number of bits, the scale factor of the LSB, the range, and the units shall be as specified in Table B-6. 3.1.1.3.2.2 Issue of data ephemeris (I DE) The IODE shall be an 8-bit number equal to the 8 LSBs of the 10-bit IODC of the same data set. The IODE shall be provided in both subframes 2 and 3 for the purpose of comparison with the 8 LSBs of the IODC term in subframe 1. Whenever these three terms do not match, as a result of a data set cutover, new data shall be collected. The transmitted IODE shall be different from any value transmitted by the satellite during the preceding six hours (Note 1). Any change in the subframe 2 and 3 data shall be accomplished in concert with a change in both IODE words. Change to new data sets shall occur only on hour boundaries except for the first data set of a new upload. Additionally, the toe value, for at least the first data set transmitted by a satellite after an upload, shall be different from that transmitted prior to the change (Note 2). able Subframe 1 reser ed data fields Word Bit 11 12 1 24 1 24 1 24 1 16 23/11/06 A 2007/70/II. szám A endix Annex 10 — Aeronautical Communications able Ep emeris data M0 Mean anomaly at reference time ǻn Mean motion difference from computed value e Eccentricity A Square root of the semi-major axis OMEGA0 Longitude of ascending node of orbit plane at weekly epoch i0 Inclination angle at reference time Ȧ Argument of perigee OMEGADOT Rate of right ascension iDOT Rate of inclination angle Cuc Amplitude of the cosine harmonic correction term to the argument of latitude Cus Amplitude of the sine harmonic correction term to the argument of latitude Crc Amplitude of the cosine harmonic correction term to the orbit radius Crs Amplitude of the sine harmonic correction term to the orbit radius Cic Amplitude of the cosine harmonic correction term to the angle of inclination Cis Amplitude of the sine harmonic correction term to the angle of inclination toe Reference time, ephemeris IODE Issue of data, ephemeris able Ep emeris parameters Parameter Number of bits** Scale factor (LSB) Effective range*** Units IODE Crs 16* 2 5 metres ǻn 16* 2 43 semi-circles/second M0 32* 2 31 semi-circles Cuc 16* 2 29 radians e 2 33 0.03 dimensionless Cus 16* 2 29 radians A 2 19 metres1/2 toe 604 784 seconds Cic 16* 2 29 radians OMEGA0 32* 2 31 semi-circles Cis 16* 2 29 radians i0 32* 2 31 semi-circles Crc 16* 2 5 metres Ȧ 32* 2 31 semi-circles OMEGADOT 24* 2 43 semi-circles/second iDOT 14* 2 43 semi-circles/second * Parameters so indicated are two s complement, with the sign bit ( or ) occupying the MSB. ** See Figure B-6 for complete bit allocation in subframe. *** Unless otherwise indicated in this column, effective range is the maximum range attainable with the indicated bit allocation and scale factor. A 23/11/06 2007/70/II. szám Annex 10 — Aeronautical Communications Volume I Note The I DE I DC terms provide the receiver with a means for detecting any changes in the ephemeris cloc representation parameters Note The first data set may change ( ) at any time during the hour and therefore may be transmitted by the satellite for less than hour 3.1.1.3.2.3 Reserved data fields Within word 10, subframe 2, bits 17 through 22 shall be reserved. Reserved data fields shall support the valid parity within their respective words. 3.1.1.3.3 Subframes and support data Both subframes 4 and 5 shall be subcommutated 25 times each. With the possible exception of “reserved” pages and explicit repeats, each page shall contain different data in words 3 through 10. The pages of subframe 4 shall use 6 different formats, and the pages of subframe 5 shall use two different formats as indicated in Figure B-6. Pages of subframe 4 shall be as follows:

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