Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 4857

c) either a miss distance estimate could not be calculated on the current cycle or the calculated miss distance is less than Hm; and for all other conditions the result of the range test is negative. Note.— The formula in item a) 2) above provides a practical text for the following condition: the range and range rate estimates indicate that the encounter could be such that the linear miss distance is less than or equal to Dm and the linear time to closest approach is less than T. 4.3.3.3.1 The values of the parameters T, Dm and Hm are as follows: R· t R· t – R· t P· m P· m P· m P· m S T s Dm (km) 0.37 0.65 1.0 1.5 2.0 (Dm (NM) 0.20 0.35 0.55 0.80 1.1) Hm (m) 1 019 1 483 2 083 (Hm (ft) 1 251 2 126 3 342 4 861 6 683) r Dm – r·′ r·′ r· R· t Table A-1 Nominal altitude band SLC command code Altitude threshold at which sensitivity level value changes Hysteresis values 0 to 1 000 ft AGL 1 000 ft AGL ±100 ft 1 000 ft to 2 350 ft AGL 2 350 ft AGL ±200 ft 2 350 ft AGL to FL 50 FL 50 ±500 ft FL 50 to FL 100 FL 100 ±500 ft FL 100 to FL 200 FL 200 ±500 ft above FL 200 2007/70/II. szám Attachment Annex 10 — Aeronautical Telecommunications ATT-43 28/11/02 4.3.4 ALTITUDE TEST 4.3.4.1 ALTITUDE TEST TERMS’ DESCRIPTION Altitude divergence rate . The rate of change of a. Current altitude separation (a). The modulus of the current tracked altitude separation between own aircraft and the intruder. Times to closest approach (τu, τm). The estimated time which will be taken to reach minimum range. τu is the maximum value (assuming rectilinear relative motion and zero miss distance) and τm is the minimum value (assuming rectilinear relative motion and the maximum miss distance of interest, Dm). Time to co-altitude (τv). The estimated time which will be taken to reach co-altitude. Vertical miss distance (vm). An estimated lower bound for the projected altitude separation at the estimated time of closest approach. 4.3.4.2 Current altitude separation. Current altitude separation is declared “small” if a < Zt where Zt is set equal to Zm (4.3.4.4.2) in the reference logic. 4.3.4.3 ALTITUDE CONVERGENCE 4.3.4.3.1 is calculated as follows: = – for zo – zi ≥ 0 = – for zo – zi < 0 4.3.4.3.2 The aircraft are declared converging in altitude if < . 4.3.4.3.3 The value of is positive and not greater than 0.3 m/s (60 ft/min). 4.3.4.4 VERTICAL MISS DISTANCE 4.3.4.4.1 When the aircraft are converging in range ( ≤0), time to closest approach and vertical miss distance are calculated as follows: = minimum ( , – ) τu = minimum ( , T) τm = ( /r)/  for r ≥ Dm = 0 for r < Dm vm1 = (zo – zi ) + ( – ) τu vm2 = (zo – zi ) + ( – ) τm vm = 0 for vm1vm2 ≤ 0, otherwise vm = minimum (vm1, vm2) for vm1 > 0 = maximum (vm1, vm2) for vm1 < 0 4.3.4.4.2 Vertical miss distance is declared “small” if vm < Zm. The maximum values for Zm are given by: 4.3.4.5 TIME TO CO-ALTITUDE 4.3.4.5.1 The time to co-altitude for less than is calculated as follows: τv = –a/ Note.— τv is not used if the aircraft are not converging in altitude and range. 4.3.4.5.2 τv is declared “small” if τv < Tv for encounters in which the magnitude of own aircraft’s vertical rate is not more than 600 ft/min or own aircraft’s vertical rate has the same sign as but smaller magnitude than that of the intruder. For all other encounters τv is declared “small” if τv < T. The values of the parameters Tv are as follows: S Tv s 4.3.4.6 Altitude test criteria. The altitude test of the reference logic gives a positive result when any of the three following conditions are satisfied:

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