By Dale Stacey
Chapter 1 advent (pages 1–8):
Chapter 2 concept Governing Aeronautical Radio structures (pages 9–104):
Chapter three VHF communique (pages 105–144):
Chapter four army communique structures (pages 145–156):
Chapter five Long?Distance cellular Communications (pages 157–175):
Chapter 6 Aeronautical Telemetry structures (pages 177–186):
Chapter 7 Terrestrial Backhaul and the Aeronautical Telecommunications community (pages 187–199):
Chapter eight destiny Aeronautical cellular communique platforms (pages 201–219):
Chapter nine The Economics of Radio (pages 221–227):
Chapter 10 floor Installations and gear (pages 229–257):
Chapter eleven Avionics (pages 259–305):
Chapter 12 Interference, Electromagnetic Compatibility, Spectrum administration and Frequency administration (pages 307–324):
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Additional info for Aeronautical Radio Communication Systems and Networks
Northern Europe ranges from zone C to G, the subtropics are ranging typically to K and the tropics can go from M up to W and X. When designing links or paths, consideration of the rain zones should be given. 15). 2 Oxygen Absorption and Other Gases Of lesser significance is absorption from other atmospheric gases, particularly oxygen. 16). ) At lower HF and VHF frequencies gaseous absorption is negligible. 15 Rain attenuation curves. For fuller description of how to apply formulaes and principles and attain dB/km, see ITU-R P837.
There is always a carrier present, even when no information is being sent; this means a receiver can easily tune to this carrier frequency and keep locked to it. In the amplitude domain, signals cannot get distorted or shifted by Doppler shifts of receivers and transmitters that are physically moving with relation to one another. 30 DSB-AM modulator. 31 DSB-AM non-coherent detector and coherent detector. 3 Disadvantages of DSB-AM Some of the relative disadvantages of DSB-AM when comparing this modulation to other schemes can be the following: r r r At its best performance, only one-third of power being transmitted is the information signal, the other two-thirds of power is absorbed by the carrier and is not useful.
At a GPS fixing of (18◦ 18 S, 139◦ 12 E) the VHF communication is finally lost. The altitude of the top of the VHF mast in Cairns is 890 m. ) What does this say about the k factor? 26). 32 km On initial inspection this looks way beyond the reasonable radio horizon, so some kind of bending of the radio beam upwards (akin to k factors in excess of 1) must be taking place. By broad definition this is the point where coverage ceases, so it should be assumed this is where LOS stops. Consider the k factor.
Aeronautical Radio Communication Systems and Networks by Dale Stacey