Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 3885

b) aircraft manoeuvres, speeds and attitudes normally encountered within the coverage volume. Note 1.— The airborne equipment includes the aircraft antenna(s), the airborne receiver, the pilot interface equipment and the necessary interconnections. Note 2.— etailed Minimum Performance Specifications for MLS avionics have been compiled and coordinated by the European Organization for Civil Aviation Electronics (E ROCAE) and RTCA Inc. ICAO periodically provides to Contracting States current lists of the publications of these organizations in accordance with Recommendations 3/1 (a) and 6/7(a) of the Seventh Air Navigation Conference. 7.1.2 Function decoding 7.1.2.1 The airborne equipment is to be capable of decoding and processing the approach azimuth, high rate approach azimuth, back azimuth, and approach elevation functions, and data required for the intended operation. 7.1.2.2 In addition, the receiver utilizes techniques to prevent function processing resulting from the presence of function preambles embedded within the data fields of basic and auxiliary data words and scanning beam side lobe radiation. One technique to accomplish this is to decode all functionpreambles. Following the decode of a preamble, the detection and decoding of all function preambles is then disabled for a period of time corresponding to the length of the function. 7.1.2.3 Range information is decoded independently. 7.1.3 The receiver decodes the full range of angles permitted by the signal format for each function. The guidance angle is determined by measuring the time interval between the received envelopes of the TO and FRO scans. The decoded angle is related to this time interval by the equation given in Chapter 3, 3.11.4.5. 7.1.4 The receiver is capable of normal processing of each radiated function without regard to the position of the function in the transmitted sequences. 7.1.5 If the MLS approach azimuth and back azimuth information is presented on the selector and/or flight instruments, it is to be displayed in magnetic degrees. Receivers in the automatic mode display the relevant information transmitted by the ground station as part of the basic data word 4. 7.1.6 The receiver has the capability for both manual and automatic selection of approach track, elevation angle and back azimuth radial when provided. When in automatic mode, the selection is made as follows. 7.1.6.1 Approach azimuth — select the angular reciprocal of the approach azimuth magnetic orientation in basic data word 4. 7.1.6.2 Elevation angle — select the minimum glide path in basic data word 2. 7.1.6.3 Back azimuth — select the angle of the back azimuth magnetic orientation in basic data word 4. Note.— The receiver indicates when deviation is referenced to the back azimuth signal. 7.1.7 The MLS airborne receiver system must have an integrity compatible with the overall integrity of MLS which is at least 1 – 1 × 10–7 in any one landing. 7.1.8 For airborne equipment used in MLS/RNAV operations the capability is to be provided to unambiguously display the procedure selected. ATT G-23 23/11/06 2007/70/II. szám Annex 10 — Aeronautical Communications Volume I 7.2 Radio frequency response 7.2.1 Acceptance bandwidth 7.2.1.1 The receiver should meet acquisition and performance requirements when the received signal frequency is offset by up to plus or minus 12 kHz from the normal channel centre frequency. This figure considers possible ground transmitter offsets of plus or minus 10 kHz and Doppler shifts of plus or minus 2 kHz. The receiver should decode all functions independently of the different frequency offsets of one function relative to another. 7.2.2 Selectivity 7.2.2.1 When the receiver is tuned to an inoperative channel and an unwanted MLS signal of a level 33 dB above that specified in Chapter 3, 3.11.4.10.1 for the approach azimuth DPSK is transmitted on any one of the remaining channels, the receiver should not acquire the signal. 7.2.3 In-channel spurious response 7.2.3.1 The receiver performance specified in Chapter 3, 3.11.6, should be met when, in addition, interference on the same channel is received at a level not exceeding that specified in Chapter 3, 3.11.4.1.4. 7.2.4 Interference from out-of-band transmissions 7.2.4.1 The receiver performance in Chapter 3, 3.11.6 is to be met when, in addition, interference from undesired signals is received at a level not exceeding –124.5 dBW/m2 at the MLS receiver antenna. 7.3 Signal processing 7.3.1 Acquisition 7.3.1.1 The receiver should, in the presence of an input guidance signal which conforms to the requirements of Chapter 3, 3.11.4, acquire and validate the guidance signal before transitioning to the track mode within two seconds along the critical portion of the approach and within six seconds at the limits of coverage. 7.3.2 Tracking 7.3.2.1 While tracking, the receiver should provide protection against short duration large amplitude spurious signals. When track is established, the receiver should output valid guidance information before removing the warning. During track mode, the validation process should continue to operate. 7.3.2.2 After loss of the tracked signal for more than one second, the receiver should provide a warning signal. Within the one-second interval, the guidance information should remain at the last output value. Note 1.— A validated guidance signal is one that satisfies the following criteria

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