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Handbookhandbook Mobile-Satellite Service (MSS) Handbook
n International Telecommunication Union Mobile-satellite service (MSS) HandbookHandbook Mobile-satellite service (MSS) Handbook *00000* Edition 2002 Printed in Switzerland Geneva, 2002 ISBN 92-61-09951-3 Radiocommunication Bureau Edition 2002 THE RADIOCOMMUNICATION SECTOR OF ITU The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Sector are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Inquiries about radiocommunication matters Please contact: ITU Radiocommunication Bureau Place des Nations CH -1211 Geneva 20 Switzerland Telephone: +41 22 730 5800 Fax: +41 22 730 5785 E-mail: [email protected] Web: www.itu.int/itu-r Placing orders for ITU publications Please note that orders cannot be taken over the telephone. They should be sent by fax or e-mail. ITU Sales and Marketing Division Place des Nations CH -1211 Geneva 20 Switzerland Telephone: +41 22 730 6141 English Telephone: +41 22 730 6142 French Telephone: +41 22 730 6143 Spanish Fax: +41 22 730 5194 Telex: 421 000 uit ch Telegram: ITU GENEVE E-mail: [email protected] The Electronic Bookshop of ITU: www.itu.int/publications ITU 2002 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. International Telecommunication Union HandbookHandbook Mobile-satellite service (MSS) Radiocommunication Bureau Edition 2002 - iii - FOREWORD In today’s world, people have become increasingly mobile in both their work and play. -
Federal Communications Commission Record 9 FCC Red No
DA 94-203 Federal Communications Commission Record 9 FCC Red No. 6 4. PanAmSat also contends that, in violation of Section Before the 202 of the Communications Act, 47 U.S.C. § 202, Comsat Federal Communications Commission offers a "new" service in Transmittal 20 to a single cus Washington, D.C. 20554 tomer under terms not available to other Comsat cus tomers. PanAmSat Petition at 1-3. Comsat replies that because the reservation request for this particular service In the Matter of was made prior to an April 1993 cut-off date contained in its tariff,3 Comsat correctly applied the pre-April 1993 tariffed terms. Comsat Reply at 2-3.4 Comsat Corporation Transmittal Nos. 20 and 22 5. Finally, PanAmSat contends that, contrary to the Comsat World Systems Commission©s rules, Comsat©s Transmittal 20 omits a ma terial term: the power level for Comsat©s 54 MHz digital Tariff F.C.C. No. 1 video service. Absent such information, PanAmSat argues, the fairness of Comsat©s charges and the adequacy of Comsat©s offering to meet specific customer needs cannot ORDER be determined. PanAmSat Petition at 3-5. Comsat responds that its transmittal implicitly incorporates by reference all Adopted: March 3, 1994; Released: March 4, 1994 relevant provisions in Comsat Tariff No. 1 and that, in cluded among those provisions, is a reference to an By the Chief, Tariff Division, Common Carrier Bureau: INTELSAT document from which the power level can be calculated. Comsat Reply at 4-5. 1. On January 6, 1994, Comsat Corporation -- Comsat 6. -
Low-Cost Wireless Internet System for Rural India Using Geosynchronous Satellite in an Inclined Orbit
Low-cost Wireless Internet System for Rural India using Geosynchronous Satellite in an Inclined Orbit Karan Desai Thesis submitted to the faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Master of Science In Electrical Engineering Timothy Pratt, Chair Jeffrey H. Reed J. Michael Ruohoniemi April 28, 2011 Blacksburg, Virginia Keywords: Internet, Low-cost, Rural Communication, Wireless, Geostationary Satellite, Inclined Orbit Copyright 2011, Karan Desai Low-cost Wireless Internet System for Rural India using Geosynchronous Satellite in an Inclined Orbit Karan Desai ABSTRACT Providing affordable Internet access to rural populations in large developing countries to aid economic and social progress, using various non-conventional techniques has been a topic of active research recently. The main obstacle in providing fiber-optic based terrestrial Internet links to remote villages is the cost involved in laying the cable network and disproportionately low rate of return on investment due to low density of paid users. The conventional alternative to this is providing Internet access using geostationary satellite links, which can prove commercially infeasible in predominantly cost-driven rural markets in developing economies like India or China due to high access cost per user. A low-cost derivative of the conventional satellite-based Internet access system can be developed by utilizing an aging geostationary satellite nearing the end of its active life, allowing it to enter an inclined geosynchronous orbit by limiting station keeping to only east-west maneuvers to save fuel. Eliminating the need for individual satellite receiver modules by using one centrally located earth station per village and providing last mile connectivity using Wi-Fi can further reduce the access cost per user. -
Realizing Resilient Tactical Networks with Maximum Government Control on High-Throughput Satellites
WHITE PAPER Realizing Resilient Tactical Networks with Maximum Government Control on High-throughput Satellites 1 Wide-beam connectivity is an essential aspect of military satellite communications and High Throughput Satellite (HTS) technology is proving to be ideally suited for many Government applications. While most satellite operators offer closed HTS architectures that are vendor-locked with very little control offered to users, the Intelsat Epic Next Generation (Epic) HTS architecture is enterprise- grade, open architecture and vendor-agnostic. Intelsat Epic allows Government and military access to bandwidth-efficient, higher data throughputs on a global-scale via a wide variety of user-chosen waveforms, modems and antennas. Intelsat is proud to present the next generation of satellite communications that features higher data throughput rates and security while offering cost-efficiencies across the board. Introduction High Throughput Satellites (HTS) have been the center of solutions. Interoperability between the various military attention for the past five years. It is important to note that branches, allied, and coalition forces continues to be a most of these systems have been purpose-built solutions to challenge. Finally, most military and government users require service homogeneous sets of users via closed architectures. operational coverage in remote and austere regions such Systems such as ViaSat Exede, Inmarsat Global Express, Hughes as deserts, jungles, and oceans—well outside of population Jupiter, and Eutelsat KA-SAT require new investments in centers for which these closed architectures are optimized. proprietary modem technologies and service architectures. These closed systems offer star-only connectivity and keep With the disconnects between these closed HTS solutions and quality of service control with the service provider, not the end the challenges faced by the Government, it is no wonder that users. -
PUBLIC NOTICE FEDERAL COMMUNICATIONS COMMISSION 445 12Th STREET S.W
PUBLIC NOTICE FEDERAL COMMUNICATIONS COMMISSION 445 12th STREET S.W. WASHINGTON D.C. 20554 News media information 202-418-0500 Internet: http://www.fcc.gov (or ftp.fcc.gov) TTY (202) 418-2555 DA No. 20-883 Report No. SAT-01490 Friday August 14, 2020 Satellite Policy Branch Information Actions Taken The Commission, by its International Bureau, took the following actions pursuant to delegated authority. The effective date of these actions is the release date of this Notice, except where an effective date is specified. SAT-MPL-20200401-00029 E S3048 New Skies Satellites B.V. Modification to PDR/PPL Grant of Authority Effective Date: 06/19/2020 Nature of Service: Fixed Satellite Service On August 11, 2020, the Satellite Division reissued the market access conditions for the NSS-6 space station to reflect a 0.3º degree change in orientation of one of the satellite's beams. Grant of this change was requested pursuant to 25.117(h)(2) of the Commission's rules and became effective on June 19, 2020. SAT-STA-20200624-00082 E S2960 Intelsat License LLC, as debtor-in-possession Special Temporary Authority Grant of Authority Effective Date: 08/13/2020 On August 13, 2020, the Satellite Division granted, with conditions, the request of Intelsat License LLC as debtor-in-possession (Intelsat) for special temporary authority, for an additional period of 180 days, to continue to operate a C/Ku-band satellite, the JCSAT-RA space station, at the 168.9º E.L. orbital location to provide fixed-satellite service in the 3940-4200 MHz (space-to-Earth), 6225-6485 MHz (Earth-to-space), 12.2-12.75 GHz (space-to-Earth), and 13.75-14.5 GHz (Earth-to-space) frequency bands. -
Positioning Using IRIDIUM Satellite Signals of Opportunity in Weak Signal Environment
electronics Article Positioning Using IRIDIUM Satellite Signals of Opportunity in Weak Signal Environment Zizhong Tan, Honglei Qin, Li Cong * and Chao Zhao School of Electronic and Information Engineering, Beihang University (BUAA), Beijing 100191, China; [email protected] (Z.T.); [email protected] (H.Q.); [email protected] (C.Z.) * Correspondence: [email protected]; Tel.: +86-1381-0629-638 Received: 9 December 2019; Accepted: 25 December 2019; Published: 27 December 2019 Abstract: In order to get rid of the dependence of the navigation and positioning system on the global navigation satellite system (GNSS), radio, television, satellite, and other signals of opportunity (SOPs) can be used to achieve receiver positioning. The space-based SOPs based on satellites offer better coverage and availability than ground-based SOPs. Based on the related research of Iridium SOPs positioning in the open environment, this paper mainly focuses on the occluded environment and studies the Iridium SOPs positioning technique in weak signal environment. A new quadratic square accumulating instantaneous Doppler estimation algorithm (QSA-IDE) is proposed after analysing the orbit and signal characteristics of the Iridium satellite. The new method can improve the ability of the Iridium weak signal Doppler estimation. The theoretical analysis and positioning results based on real signal data show that the positioning based on Iridium SOPs can be realized in a weak signal environment. The research broadens the applicable environment of the Iridium SOPs positioning, thereby improving the availability and continuity of its positioning. Keywords: signals of opportunity positioning; Iridium; weak signal; instantaneous Doppler 1. Introduction The new methods for receiver positioning based on abundant and various frequency signals have emerged in recent years. -
Spectrum and the Technological Transformation of the Satellite Industry Prepared by Strand Consulting on Behalf of the Satellite Industry Association1
Spectrum & the Technological Transformation of the Satellite Industry Spectrum and the Technological Transformation of the Satellite Industry Prepared by Strand Consulting on behalf of the Satellite Industry Association1 1 AT&T, a member of SIA, does not necessarily endorse all conclusions of this study. Page 1 of 75 Spectrum & the Technological Transformation of the Satellite Industry 1. Table of Contents 1. Table of Contents ................................................................................................ 1 2. Executive Summary ............................................................................................. 4 2.1. What the satellite industry does for the U.S. today ............................................... 4 2.2. What the satellite industry offers going forward ................................................... 4 2.3. Innovation in the satellite industry ........................................................................ 5 3. Introduction ......................................................................................................... 7 3.1. Overview .................................................................................................................. 7 3.2. Spectrum Basics ...................................................................................................... 8 3.3. Satellite Industry Segments .................................................................................... 9 3.3.1. Satellite Communications .............................................................................. -
APSCC Monthly E-Newsletter AUGUST 2017
APSCC Monthly e-Newsletter AUGUST 2017 The Asia-Pacific Satellite Communications Council (APSCC) e-Newsletter is produced on a monthly basis as part of APSCC’s information services for members and professionals in the satellite industry. Subscribe to the APSCC monthly newsletter and be updated with the latest satellite industry news as well as APSCC activities! To renew your subscription, please visit www.apscc.or.kr/sub4_5.asp. To unsubscribe, send an email to [email protected] with a title “Unsubscribe.” News in this issue has been collected from July 1 to July 31. INSIDE APSCC APSCC 2017 Satellite Conference & Exhibition, 10-12 October, Tokyo, Japan EARLY BIRD REGISTRATION IS NOW OPEN! The APSCC Satellite Conference and Exhibition is Asia’s must-attend executive conference for the satellite and space industry, where business leaders come together to gain market insight, strike partnerships and conclude major deals. Celebrating its 20th annual event APSCC 2017 #SATECHexplorer will incorporate industry veterans and new players through the 3-day of in-depth conference program to reach out to a broader audience. Join APSCC 2017 and expand your business network while hearing from a broad range of thought-provoking panels and speakers representing visionary ideas and years of business experience in the industry. For more information, please visit www.apscc2017.com SATELLITE BUSINESS Geoscience Australia Renews Life-Saving Connectivity Contracts with Speedcast July 5, 2017 - Speedcast International Limited announced Geoscience Australia, Australia’s pre-eminent public sector geoscience organization, has renewed its contract with Speedcast for life-saving connectivity applications. Speedcast provides VSAT connectivity for Geoscience Australia’s seismic reading and GPS land movement applications. -
DESIGN of a LOW-COST AUGMENTATION NAVIGATION SYSTEM: the UNITED KINGDOM’S IMMEDIATE ANSWER to the GALILEO BREXIT
DESIGN OF A LOW-COST AUGMENTATION NAVIGATION SYSTEM: THE UNITED KINGDOM’s IMMEDIATE ANSWER TO THE GALILEO BREXIT CONUNDRUM Lawal S Lasisi Satellite Applications and Development, Nigerian Communications Satellite Ltd, Obasanjo Space Center, affiliated to Federal University of Technology, Minna-Nigeria. e-mail: [email protected]; +2348023151587. Chatwin R Chris Engineering and Design, School of Engineering and Informatics, Room 2B07, Shawcross Building, University of Sussex, Falmer, Brighton-UK, BN1 9QT e-mail: [email protected]; +441273678901. ABSTRACT United Kingdom’s Brexit from the European Union implies restricted access to the European Global Navigation Satellite System (GNSS) System - Galileo; with no access to the secured and encrypted signal used for defense and government purposes, which is restricted to European Union (EU) members. To mitigate this issue, the United Kingdom can, as a matter of urgency, launch a payload on a national military Communications Satellite to provide Navigation Overlay Services for the United Kingdom territory, surrounding waters and neighboring ally countries to meet the requirements of: Defense systems, Aviation, Maritime requirements and the effectiveness of Location-based Services for Emergencies and Crisis management etc. This paper describes the design of a navigation overlay service system as a hoisted payload on a national satellite and the required supporting ground infrastructure, highlighting various applications, services and solutions. Keywords: Brexit, Communications Satellite, Defence, European Union (EU), Galileo, GNSS, Military, Precision Point Positioning, SBAS. 1 INTRODUCTION TO GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) The United States Global Positioning System (GPS) marked the beginning of Global Navigation Satellite Systems (GNSS). After the First World War, radio time signals offered alternative technology for determination of the Greenwich Time line and thus longitude at sea. -
Update of the Space and Launch Insurance Industry
Commercial Space Transportation QUARTERLY LAUNCH REPORT Special Report: Update of the Space and Launch Insurance Industry 4th Quarter 1998 United States Department of Transportation • Federal Aviation Administration Associate Administrator for Commercial Space Transportation 800 Independence Ave. SW Room 331 Washington, D.C. 20591 Special Report SR-1 Update of the Space and Launch Insurance Industry INTRODUCTION at risk, insurance is essential to mitigate the high cost of a failure. Insurance is a basic requirement for the maintenance of a commercial space industry. Certain types of space insurance, such as Space activity mishaps can result in hundreds third party liability insurance, protect the of millions of dollars of expenses. Two general public from the hazards of space recent launch vehicles that failed (a Titan 4A activity. The U.S. Federal Aviation and the initial Delta 3) were valued at $1.3 Administration, through the Commercial billion and $225 million respectively Space Launch Act Amendments of 1988, (inclusive of payload). The replacement cost requires third party liability insurance as a of the recently failed Galaxy 4 satellite, for condition for the issuance of a commercial example, was in the range of $200 to $250 launch license. Under the 1972 United million. In addition, consequences of Nations Convention on International Liability mishaps will typically extend beyond the cost for Damage Caused by Space Objects, of a satellite and launch vehicle. Business governments are liable for injury or damage operations can be delayed, possibly resulting to third parties, caused by launch vehicles or in the deferral of a satellite venture’s vital payloads launched under their jurisdiction. -
Satellite Communication with the Merge on Television Communication
Special Issue - 2018 International Journal of Engineering Research & Technology (IJERT) ISSN: 2278-0181 Confcall - 2018 Conference Proceedings Satellite Communication with the Merge on Television Communication Ayyasamy.T Deepika.S Keerthana. K Head of the Department UG Scholar UG Scholar Dept of Aeronautical Dept of Aeronautical Dept of Aeronautical Srinivasan Engineering College, Srinivasan Engineering College, Srinivasan Engineering College, Perambalur-621 212 Perambalur-621 212 Perambalur-621 212 Abstract - In the context of a worldwide communications with run-down batteries, and leftover rocket boosters all network, satellite communications systems are very important. contribute to the count. This online catalogs of satellite has Satellite communications links add capacity to existing almost 26,000 entries! communications capabilities and provide additional alternate Although anything that is in orbit around Earth is technically routings for communications traffic. Satellite links, as one of a satellite, the term "satellite" is typically used to describe a several kinds of long-distance links, interconnect switching centers located strategically around the world. They are part of useful object placed in orbit purposely to perform some the defense communication systems (DCS) network. One specific mission or task. We commonly hear about weather important aspect of the satellite communications network is that satellites, communication satellites and scientific satellite it continues in operation under conditions that sometimes render other methods of communications inoperable. Because of this, II. HELPFUL HINTS satellites make a significant contribution to improved reliability of Navy communications .When satellite television first hit the A.Types of Classification market in the early 1990s, home dishes were expensive metal • Weather satellites help meteorologists predict the units that took up a huge chunk of yard space. -
Overview of Satellite Communications
Overview of Satellite Communications Dick McClure Agenda Background History Introduction to Satcom Technology Ground System Antennas Satellite technology Geosynchronous orbit Antenna coverage patterns 2 COMMUNICATION SATELLITES Uses Example satellite systems 3 Why Satellite Communications? Satellite coverage spans great distances A satellite can directly connect points separated by 1000’s of miles A satellite can broadcast to 1000’s of homes/businesses/military installations simultaneously A satellite can be reached from ground facilities that move Satellites can connect to locations with no infrastructure Satellites adapt easily to changing requirements Some Common SATCOM Systems The INTELSAT system provides globe-spanning TV coverage The Thuraya satellite-based phone system covers all of Saudi Arabia and Egypt DoD Military Communications Satellite System Links field sites with Pentagon and US command centers DirecTV, Echostar Direct-to-home TV XM Radio, Sirius Satellite radio-to-car/home Hughes VSAT (Very Small Aperture Terminal) systems Links GM car dealers, Walmart, Costco, J C Penney, etc. to their accounting centers Common Satellite Orbits LEO (Low Earth Orbit) Close to Earth Photo satellites – 250 miles Iridium – 490 miles Polar Orbit Provides coverage to polar regions (used by Russian satellites) GEO (Geosynchronous Earth Orbit) Angular velocity of the satellite = angular velocity of earth satellite appears to be fixed in space Most widely used since ground antennas need not move Circular orbit Altitude: 22,236 miles Can’t “see” the poles 6 HISTORICAL BACKGROUND People Early satellites Evolution 7 Historical Background: People Arthur C. Clarke Highly successful science fiction author First to define geosynchronous communications satellite concept Published paper in Wireless World , October 1945 Suggested terrestrial point-to-point relays would be made obsolete by satellites Unsure about how satellites would be powered John R.