Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 3200

d) precise differential correction: determine and transmit the ionospheric corrections (Appendix B, 3.5.7.5). Note If all the functions are provided S AS in combination with core satellite constellation(s) can support departure en route terminal and approach operations including Category I precision approach The level of performance that can be achieved depends upon the infrastructure incorporated into S AS and the ionospheric conditions in the geographic area of interest 2007/70/II. szám C a ter Annex 10 — Aeronautical Communications 3 6 23/11/06 3.7.3.4.2.1 Ranging 3.7.3.4.2.1.1 Excluding atmospheric effects, the range error for the ranging signal from SBAS satellites shall not exceed 25 m (82 ft) (95 per cent). 3.7.3.4.2.1.2 The probability that the range error exceeds 150 m (490 ft) in any hour shall not exceed 10 5. 3.7.3.4.2.1.3 The probability of unscheduled outages of the ranging function from an SBAS satellite in any hour shall not exceed 10 3. 3.7.3.4.2.1.4 The range rate error shall not exceed 2 m (6.6 ft) per second. 3.7.3.4.2.1.5 The range acceleration error shall not exceed 0.019 m (0.06 ft) per second-squared. 3.7.3.4.3 Service area. The SBAS service area shall be a defined area within an SBAS coverage area where SBAS meets the requirements of 3.7.2.4 and supports the corresponding approved operations. Note The coverage area is that area within which the S AS broadcast can be received (e g the geostationary satellite footprints) Note S AS coverage and service areas are discussed in Attachment D 3.7.3.4.4 RF characteristics Note Detailed RF characteristics are specified in Appendix 3.7.3.4.4.1 Carrier fre uency The carrier frequency shall be 1 575.42 MHz. Note After when the upper NASS fre uencies are vacated another type of S AS may be introduced using some of these fre uencies 3.7.3.4.4.2 Signal spectrum. At least 95 per cent of the broadcast power shall be contained within a 12 MHz band centred on the L1 frequency. The bandwidth of the signal transmitted by an SBAS satellite shall be at least 2.2 MHz. 3.7.3.4.4.3 Signal power level. Each SBAS satellite shall broadcast navigation signals with sufficient power such that, at all unobstructed locations near the ground from which the satellite is observed at an elevation angle of 5 degrees or higher, the level of the received RF signal at the output of a 3 dBi linearly polarized antenna is within the range of 161 dBW to 153 dBW for all antenna orientations orthogonal to the direction of propagation. 3.7.3.4.4.4 Polari ation. The broadcast signal shall be right-hand circularly polarized. 3.7.3.4.4.5 Modulation The transmitted sequence shall be the Modulo-2 addition of the navigation message at a rate of 500 symbols per second and the 1 023 bit pseudo-random noise code. It shall then be BPSK-modulated onto the carrier at a rate of 1.023 megachips per second. 3.7.3.4.5 S AS networ time (SNT). The difference between SNT and GPS time shall not exceed 50 nanoseconds. 3.7.3.4.6 Navigation information. The navigation data transmitted by the satellites shall include the necessary information to determine:

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