Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 3215

b) vertically, within the lateral region, up to the greater of 7 degrees or 1.75 promulgated glide path angle (GPA) above the horizontal with an origin at the glide path interception point (GPIP) and 0.45 GPA above the horizontal or to such lower angle, down to 0.30 GPA, as required, to safeguard the promulgated glide path intercept procedure. This coverage applies between 30 m (100 ft) and 3 000 m (10 000 ft) height above threshold (HAT). Note TP FTP and PIP are defined in Appendix 3.7.3.5.3.1.1 Recommendation For Category I precision approach the data broadcast as specified in should extend down to m ( ft) above the runway surface 3.7.3.5.3.1.2 Recommendation The data broadcast should be omnidirectional when re uired to support the intended applications Note uidance material concerning coverage for Category I precision approach and AP is provided in Attachment D 3.7.3.5.3.2 AS positioning service The GBAS positioning service area shall be that area where the data broadcast can be received and the positioning service meets the requirements of 3.7.2.4 and supports the corresponding approved operations. Note uidance material concerning the positioning service coverage is provided in Attachment D 3.7.3.5.4 Data broadcast characteristics Note RF characteristics are specified in Appendix 3.7.3.5.4.1 Carrier fre uency. The data broadcast radio frequencies used shall be selected from the radio frequencies in the band 108 to 117.975 MHz. The lowest assignable frequency shall be 108.025 MHz and the highest assignable frequency shall be 117.950 MHz. The separation between assignable frequencies (channel spacing) shall be 25 kHz. Note uidance material on R AS fre uency assignments and geographical separation criteria is given in Attachment D Note I S AS geographical separation criteria and geographical separation criteria for AS and F communication services operating in the M band are under development Until these criteria are defined and included in SARPs it is intended that fre uencies in the band M will be used 3.7.3.5.4.2 Access techni ue. A time division multiple access (TDMA) technique shall be used with a fixed frame structure. The data broadcast shall be assigned one to eight slots. Note Two slots is the nominal assignment Some AS facilities that use multiple F data broadcast ( D ) transmit antennas to improve D coverage may re uire assignment of more than two time slots uidance on the use of multiple antennas is given in Attachment D some AS broadcast stations in a RAS may use one time slot 3.7.3.5.4.3 Modulation. GBAS data shall be transmitted as 3-bit symbols, modulating the data broadcast carrier by D8PSK, at a rate of 10 500 symbols per second. 2007/70/II. szám Annex 10 — Aeronautical Communications Volume I 23/11/06 3 6 3.7.3.5.4.4 Data broadcast RF field strength and polari ation Note AS can provide a F data broadcast with either hori ontal ( AS ) or elliptical ( AS E) polari ation that employs both hori ontal polari ation ( P ) and vertical polari ation ( P ) components Aircraft using a P component will not be able to conduct operations with AS e uipment Relevant guidance material is provided in Attachment D 3.7.3.5.4.4.1 AS 3.7.3.5.4.4.1.1 A horizontally polarized signal shall be broadcast. 3.7.3.5.4.4.1.2 The effective radiated power (ERP) shall provide for a horizontally polarized signal with a minimum field strength of 215 microvolts per metre ( 99 dBW/m2) and a maximum field strength of 0.350 volts per metre ( 35 dBW/m2) within the GBAS coverage volume. The field strength shall be measured as an average over the period of the synchronization and ambiguity resolution field of the burst. The RF phase offset between the HPOL and any VPOL components shall be such that the minimum signal power defined in Appendix B, 3.6.8.2.2.3 is achieved for HPOL users throughout the coverage volume. 3.7.3.5.4.4.2 AS E 3.7.3.5.4.4.2.1 Recommendation An elliptically polari ed signal should be broadcast whenever practical. 3.7.3.5.4.4.2.2 When an elliptically polarized signal is broadcast, the horizontally polarized component shall meet the requirements in 3.7.3.5.4.4.1.2, and the effective radiated power (ERP) shall provide for a vertically polarized signal with a minimum field strength of 136 microvolts per metre ( 103 dBW/m2) and a maximum field strength of 0.221 volts per metre ( 39 dBW/m2) within the GBAS coverage volume. The field strength shall be measured as an average over the period of the synchronization and ambiguity resolution field of the burst. The RF phase offset between the HPOL and VPOL components, shall be such that the minimum signal power defined in Appendix B, 3.6.8.2.2.3 is achieved for HPOL and VPOL users throughout the coverage volume. Note The minimum and maximum field strengths in and are consistent with a minimum receiver sensitivity of d m and minimum distance of m ( ft) from the transmitter antenna for a coverage range of m ( NM) 3.7.3.5.4.5 Power transmitted in adjacent channels. The amount of power during transmission under all operating conditions when measured over a 25 kHz bandwidth centred on the ith adjacent channel shall not exceed the values shown in Table 3.7.3.5-1 (located at the end of section 3.7). 3.7.3.5.4.6 Unwanted emissions Unwanted emissions, including spurious and out-of-band emissions, shall be compliant with the levels shown in Table 3.7.3.5-2 (located at the end of section 3.7). The total power in any VDB harmonic or discrete signal shall not be greater than 53 dBm. 3.7.3.5.5 Navigation information. The navigation data transmitted by GBAS shall include the following information:

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