Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 3480

s) and S AS failures mas and Issue of data I DP). SBAS shall broadcast a PRN mask and IODP (Type 1 message). T lues shall indicate whether or not data are being provided for each GNSS satellite. The IODP shall change when there is a change in the PRN mask. The c ange of IODP in Type 1 messages shall occur before the IODP changes in a e. The IODP in Ty ual the IODP broadcast in the PRN mask m pe 1 message) used to designate the satellites for which data are provided in that message. able Data broadcast inter als and supported functions Data type Maximum broadcast interval Ranging GNSS satellite status Basic differential correction Precise differential correction Associated message types SBAS provides a ranging function, it shall comply Per er tion da ng rojected on th URA represe f-sight to an estimate of n the satellite t is less than 256 metres. Each SB ranging errors referenced to SNT. standard deviation of 3.5.7.3 NSS satellite status function quirements contain If n SB a in this secti fu n an g the HP fined Note Active is define onstellation( 3.5.7.3.2 PRN PRN ( he PRN mask va h ny other messag  pe 2 to 5, 7, 24 and messages shall eq essage (Ty Clock-Ephemeris covariance matrix 120 s SBAS in test mode 6 s PR R R 2 to 6, 24 Fast corrections 60 s R* R R 2 to 5, 24 Lo gradation 120 s R* R R Degradation parameters 120 s R Io R Timing data 300 s R R R R R R R Service level 300 s Notes R indicates that the data must be broadcast to support the function R indicates special coding as described in Type messages are only re uired if data are provided for NASS satellites N mask 120 s R R R UDREI 6 s R* ng-term corrections 120 s R* R R 24, 25 GEO ranging function data 120 s R Fast correction de nospheric grid mask 300 s R Ionospheric corrections, GIVEI 300 s (see Note 3) (see Note 3) (see Note 3) (see Note 3) Almanac data 300 s R 23/11/06 A 2007/70/II. szám A endix Annex 10 — Aeronautical Communications able S AS radio fre uency monitoring Parameter Reference Alarm limit Required action Signal power level Chapter 3, 3.7.3.4.4.3 minimum 161 dBW maximum 153 dBW (Note 2) Minimum: cease ranging function (Note 1). Maximum: cease broadcast. Modulation Chapter 3, 3.7.3.4.4.5 monitor for waveform distortion Cease ranging function (Note 1). phase deviation (Notes 2 and 3) less ı 2 UDRE and URA reflect error. Convolutional en 3.5.2.9 all transmit messages Cease broadcast. Ceasing the ranging function is accomplished by broadcasting a URA and ı UDRE of Do Not Use for that S AS satellite These parameters can be monitored by their impact on the received signal uality (C N impact) since that is the impact on the user Alarm limits are not specified because the induced error is acceptable provided it is represented in the ı UDRE and URA parameters I SNT-to-GPS time Chapter 3, 3.7.3.4.5 N/A (Note 3) Cease ranging function unless URA reflects error. Carrier frequency stability 3.5.2.1 N/A (Note 3) Cease ranging function unless ı2 UDRE and URA reflect error. Code/frequency coherence 3.5.2.4 N/A (Note 3) Cease ranging function unless ı 2 UDRE and URA reflect error. Maximum code 3.5.2.6 N/A Cease ranging function un coding are erroneous Notes f the error cannot be represented the ranging function must cease 3.5.7.3.2.1 Recommendation hen the PRN mas is changed S AS should repeat the Type message several times before referencing it in other messages to ensure that users receive the new mas 3.5.7.3.3 Integrity data. If SBAS does not provide the basic differential correction function, it shall transmit fast corrections, long-term corrections and fast correction degradation parameters coded to zero for all visible satellites indicated in the PRN mask. 3.5.7.3.3.1 If SBAS does not provide the basic differential correction function, SBAS shall indicate that the satellite is unhealthy (“Do Not Use”) if the pseudo-range error exceeds 150 metres. 3.5.7.3.3.2 If SBAS does not provide the basic differential correction function, SBAS shall indicate that the satellite is Not l transmit a UDREIi of 13 if e satellite is not “Do Not Use” or “Not Monitored”. 3.5.7.3.3.4 The IODFj parameter in Type 2 to 5, 6 or 24 messages shall be equal to 3. “ Monitored” if the pseudo-range error cannot be determined. 3.5.7.3.3.3 If SBAS does not provide the basic differential correction function, SBAS shal th A 23/11/06 2007/70/II. szám Annex 10 — Aeronautical Communications Volume I 3.5.7.4 asic differential correction function. If an SBAS provides a basic differential correction function, it shall comply with the requirements contained in this section in addition to the GNSS satellite status function requirements defined in 3.5.7.3. 3.5.7.4.1 Performance of basic differential correction function. Given any valid combination of active data, the probability of a horizontal error exceeding the HPLSBAS (as defined in 3.5.5.6) for longer than 8 consecutive seconds shall be less than 10 7 in any hour, assuming a user with zero latency. rvice provider, SBAS shall determine and broa n the PRN mask (PRN mask value equal to “1”). The long-term corrections shall be such that the core satellite constellation(s) satellite position error projected on the line-of-sight to any user in the satellite footprint after application of these long-term corrections is less than 256 metres. For each GLONASS satellite, SBAS shall translate satellite coordinates into WGS-84 as defined in 3.5.5.2 prior to determining the long-term corrections. For each GPS satellite, the broadcast IOD shall match both the GPS IODE and 8 LSBs of IODC associated with the clock and ephemeris data used to compute the corrections (3.1.1.3.1.4 and 3.1.1.3.2.2). Upon transmission of a new ephemeris by a GPS satellite, SBAS shall continue to use the old ephemeris to determine the fast and long-term error corrections for at least 2 minutes and not more than 4 minutes. For each GLONASS satellite, SBAS shall compute and broadcast an IOD that consists of a latency and a validity interval as defined in 3.5.4.4.1. Note The criteria for satellite visibility include the locations of reference stations and the achieved mas angle at those locations 3.5.7.4.3 Fast corrections SBAS shall determine fast corrections for each visible GNSS satellite indicated in the PRN mask (PRN mask value equal to “1”). Unless the IODF 3, each time any fast correction data in Type j (j 2, 3, 4 or 5) message changes, the IODFj shall sequence “0, 1, 2, 0, ...”. Note If there is an alarm condition the I DFj may e ual (see ) ime offset as defined in Table B-44. 3.5.7.4.5 Integrity data. For each satellite for which corrections are provided, SBAS shall broadcast integrity data 27 or 28 message data to calculate įUDRE) such that the integrity requirement in 3.5.7.4.1 is et. If the fast corrections or long-term corrections exceed their coding range, SBAS shall indicate that the satellite is nh Fj for the fast corrections received in Type j message to which the ı i,UDRE apply; or

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