Tài liệu Chương 2 Phân mạng vệ tinh di động hàng không AMSS doc

Trường Đại học Bách Khoa Hà Nội Hanoi University of Science and Technology © HUST 2012 Hệ thông Thông tin Hàng Không TS. Đỗ Trọng Tuấn Bộ môn Kỹ thuật thông tin 2 Trường Đại học Bách Khoa Hà Nội Hanoi University of Science and Technology Phân mạng vệ tinh di động hàng không AMSS Chương 2 © HUST 2012 Hệ thống Thông tin Hàng Không Teminologies 4 AMSS: Aeronautical Mobile Satellite Subsystem AMS(R)S: Aeronautical Mobile-Satellite (Route) Service BGAN: Broadband Global Area Network Overview of ATN architecture 5 Introduction 6 Satellite system for aeronautical communications architecture as considered in (ICAO, 2010) AES (aircraft on board terminal) GES (Earth terminal) “transparent” an IP router AMS(R)S The AMS(R)S provides voice and data connectivity to users such as air traffic controllers, pilots and aircraft operators The AMSS comprises satellites, aeronautical earth stations (AESs), ground earth stations (GESs) and associated ground facilities such as a network coordination center. 7 Existing satellite systems in operation for aeronautical communications  Inmatsat, MTSAT  Iridium AMS(R)S 8 Frequency bands allocated by the ITU. The L band is defined as the Mobile Satellite Service allocation in the frequency ranges 1525-1559 MHz and 1626.5-1660.5 MHz. AMS(R)S 9 The principle of transmission in the safety satellite system  The mobile link, between the satellite and the aircraft, is built on a safety satellite spectrum allocation, based on AMS(R)S standard; AMS(R)S 10 The principle of transmission in the safety satellite system  The satellite is in charge of signals frequency conversion, simultaneously from C or Ku band to L band for the forward link, and from L band to C or Ku band for the return link; [...]... portion, C Band (3.4–4.8 GHz), Ku (10.7– 12. 75 GHz) and Ka (19 22 GHz) bands mainly for the fixed portion 21 Examples Ex1 Link Budget Calculation 22 Satellite Theory Satellite theory block diagram 23 Link Budget Equation miles/km=1,609 24 Link Budget Equation miles/km=1,8 52 C/No = ? 25 Link Budget Equation miles/km=1,8 52 C/No = ? 26 Examples Ex2 27 Examples 28 29 Trường Đại học Bách Khoa Hà Nội Hanoi... LEO constallation (16 satellites for round the world coverage)  Operate between 600 and 20 00 km above the earth’s surface  Round trip delay of between 4 and 70 ms 15 Medium-Earth Orbit Satellite System  Operate between 3000 and 30 000 km above the earth’s surface  Round trip delay of typically between 20 and 25 0 ms  No service providers are known to provide a general service to the aeronautical... map? 18 Inmarsat Inmarsat Atlantic West Atlantic East France Telecom France Telecom Telenor USA Telenor Norway Stratos UK Stratos UK Indian Ocean Pacific Ocean XANTIC Australia Telenor Norway Singapore Telecom KDDI Japan XANTIC Australia Telenor USA Singapore Telecom KDDI Japan SITA Skyphone These ground stations are all single units with antennae linking to two satellites, except for the Telenor USA... 16 Inmarsat Inmarsat mobile system components * Round trip propagation delay of between 24 0 and 28 0 ms 17 Inmarsat Inmarsat Satellite and Ground Stations E.g Goonhilly in the UK, Eik in Norway and Aussaguel in France – all acting as ground station (or hubbing points) for the Inmarsat aero service to the Inmarsat 3-F2 satellite at 15.5◦ west illustrate postion of Inmarsat Satellites on the map? 18 Inmarsat . Science and Technology Phân mạng vệ tinh di động hàng không AMSS Chương 2 © HUST 20 12 Hệ thống Thông tin Hàng Không Teminologies 4 AMSS: Aeronautical. of Science and Technology © HUST 20 12 Hệ thông Thông tin Hàng Không TS. Đỗ Trọng Tuấn Bộ môn Kỹ thuật thông tin 2 Trường Đại học Bách Khoa Hà Nội