First Responder's Guide to Satellite Communications
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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. -
TRACKING and DATA ACQUISITION/ SPACE OPERATIONS **DB Chap 4(297-321) 1/17/02 12:29 PM Page 299
**DB Chap 4(297-321) 1/17/02 12:29 PM Page 297 CHAPTER FOUR TRACKING AND DATA ACQUISITION/ SPACE OPERATIONS **DB Chap 4(297-321) 1/17/02 12:29 PM Page 299 CHAPTER FOUR TRACKING AND DATA ACQUISITION/ SPACE OPERATIONS Introduction NASA’s tracking and data acquisition program provided vital support for all NASA flight projects. NASA also supported, on a reimbursable basis, projects of the Department of Defense, other government agencies, commercial firms, and other countries and international organizations engaged in space research activities. The tracking and data acquisition program supported sounding rock- ets and balloons, research aircraft, Earth orbital and suborbital missions, planetary spacecraft, and deep space probes. The support included: • Tracking to determine the position and trajectory of vehicles in space • Acquisition of scientific and Earth applications data from on-board experiments and sensors • Acquisition of engineering data on the performance of spacecraft and launch vehicle systems • Transmission of commands from ground stations to spacecraft • Communication with astronauts • Communication of information among the various ground facilities and central control centers • Processing of data acquired from launch vehicles and spacecraft • Reception of television transmission from space vehicles NASA established three types of support capabilities: • The Spaceflight Tracking and Data Network (STDN) supported low- Earth orbital missions. • The Deep Space Network (DSN) supported planetary and interplane- tary flight missions. It also supported geosynchronous and highly elliptical missions and those in low-Earth orbit not compatible with the Tracking and Data Relay Satellite System (TDRSS). • The TDRSS provided low-Earth orbital mission support and reduced NASA’s need for an extensive network of ground stations. -
Alexander Graham Bell
WEEK 2 LEVEL 7 Alexander Graham Bell Alexander Graham Bell is the famous inventor of the telephone. Born in Scotland on March 3, 1847, he was the second son of Alexander and Eliza Bell. His father taught students the art of speaking clearly, or elocution, and his mother played the piano. Bell’s mother was almost deaf. His father’s career and his mother’s hearing impairment influenced the course of his career. He became a teacher of deaf people. As a child, Bell didn’t care for school, and he eventually dropped out. He did like to solve problems though. For example, when he was only 12, he invented a new farm implement. The tool removed the tiny husks from wheat grains. After the deaths of his two brothers from tuberculosis, Bell and his parents moved from Europe to Canada in 1870. They thought the climate there was healthier than in Scotland. A year later, Bell moved to the United States. He got a job teaching at the Boston School for Deaf Mutes. © 2019 Scholar Within, Inc. WEEK 2 LEVEL 7 One of his students was a 15-year-old named Mabel Hubbard. He was 10 years older than she was, but they fell in love and married in 1877. The Bells raised two daughters but lost two sons who both died as babies. Bell’s father-in-law, Gardiner Hubbard, knew Bell was interested in inventing things, so he asked him to improve the telegraph. Telegraph messages were tapped out with a machine using dots and dashes known as Morse code. -
WATT, TIEDER, HOFFAR & FITZGERALD, LLP Jennifer
Case 20-32299-KLP Doc 2247 Filed 05/24/21 Entered 05/24/21 17:44:23 Desc Main Document Page 1 of 19 WATT, TIEDER, HOFFAR & WHITE AND WILLIAMS LLP FITZGERALD, L.L.P. Heidi J. Sorvino, Esq. (pro hac vice pending) Jennifer Larkin Kneeland (VSB 71187) James C. Vandermark, Esq. (pro hac vice pending) Marguerite Lee DeVoll (VSB 93474) 7 Times Square, Suite 2900 1765 Greensboro Station Place New York, NY 10036 Suite 1000 (212) 244-9500 McLean, Virginia 22102 [email protected] [email protected] [email protected] [email protected] IN THE UNITED STATES BANKRUPTCY COURT FOR THE EASTERN DISTRICT OF VIRGINIA RICHMOND DIVISION In re: Chapter 11 INTELSAT, S.A. et al.,1 Case No. 20-32299 (KLP) Debtor. (Jointly Administered) OBJECTION AND RESERVATION OF RIGHTS OF SPACE-COMMUNICATION LTD. WITH RESPECT TO NOTICE OF REJECTION OF CERTAIN EXECUTORY CONTRACTS AND/OR UNEXPIRED LEASES Space-Communication Ltd. (“Spacecom”) hereby files this objection (the “Objection”) in response to the Notice of Rejection of Certain Executory Contracts and/or Unexpired Leases [ECF No. 2160] (the “Rejection Notice”) filed by the debtors in the above captioned chapter 11 proceedings (the “Debtors”) seeking to reject certain agreements between Spacecom and Intelsat Satellite LLC (“Intelsat”). In support of this Objection, Spacecom submits the Declaration of Ariel Perets (the “Perets Declaration”) and states as follows: 1 Due to the large number of Debtors in these chapter 11 cases, for which joint administration has been granted, a complete list of the Debtor entities and the last four digits of their federal tax identification numbers is not provided herein. -
Pioneer Passion for Space!
Application report Tesat Spacecom has been putting its trust in Ersa selective soldering The space mission Sentinel 2 – with Tesat equipment on technology for more than 20 years board – transmits data using laser technology. Pioneer passion for space! As one of the market leaders in the field More than 700 successful aerospace proj- of communication engineering payloads ects, many in cooperation with the Ger- for satellites, Tesat-Spacecom can look man Aerospace Center (Deutsches Zen- back on 50 years of experience in aviation trum für Luft- und Raumfahrt DRL), have and aerospace. Around 1,100 employees been completed by Tesat Spacecom. The develop, manufacture, integrate and test Swabian company has been relying on se- systems and devices for telecommunica- lective soldering technology from system tion via satellite on the 60,000 m² site in supplier Ersa since 1998 – and have flown Backnang, Swabia. well with it. Author Meinrad Eckert Area Sales Manager Ersa GmbH published in productronic 09/2019 in Germany Ersa informs 2/4 Friendly takeover: Ersa ECOSELECT 2 replaces the VERSAFLOW 40/50 (in the background). More than 700 aerospace projects, over national Space Station ISS orbits the 2,500 devices in orbit, in total more than earth at a height of around 400 km), it Facts 350 million operating hours in space – will be around one hundred years before the balance at Tesat Spacecom GmbH the service life of the satellite is spent Tesat-Spacecom & Co. KG, which last year returned rev- and it falls back to earth, in geostation- enue figures of 300 million euros and is ary orbit (height of 36,000 km) this is Revenue: celebrating “70 years at the Backnang extended to several million years! 300 million euros site” in 2019, is extremely impressive. -
Public Notice
PUBLIC NOTICE FEDERAL COMMUNICATIONS COMMISSION News Media Information (202) 418-0500 445 12th Street, S.W., TW-A325 Fax-On-Demand (202) 418-2830 Washington, DC 20554 Internet:http://www.fcc.gov ftp.fcc.gov Report Number: 2276 Date of Report: 10/05/2005 Wireless Telecommunications Bureau Assignment of License Authorization Applications, Transfer of Control of Licensee Applications, De Facto Transfer Lease Applications and Spectrum Manager Lease Notifications Action This Public Notice contains a listing of applications that have been acted upon by the Commission. Purpose File Number Parties Action Date Action AM 0001236852 Licensee: GTE Pacifica Inc. dba Verizon Pacifica 09/29/2005 M Transferor: Bell Atlantic New Zealand Holdings, Inc. Transferee: Pacific Telecom Inc. Transfer of Control Call Sign or Lead Call Sign: KNKN616 Radio Service Code(s) CL TC 0002102716 Licensee: OXBOW GEOTHERMAL CORPORATION 10/01/2005 M Transferor: Oxbow Geothermal Corporation Transferee: Caithness Dixie Valley, LLC Transfer of Control Call Sign or Lead Call Sign: KOG4 Radio Service Code(s) AF Page 1 Purpose File Number Parties Action Date Action TC 0002221758 Licensee: Space Systems/Loral, Inc. (Debtor-in-Possession) 09/30/2005 C Transferor: Loral Space & Communiations Ltd. (DIP) Transferee: Loral Space & Communications Inc. Transfer of Control Call Sign or Lead Call Sign: WNHP984 Radio Service Code(s) IG TC 0002288005 Licensee: W.W. Webber, Inc. 09/29/2005 M Transferor: The Webber Group, Inc. Transferee: Norvarem S.A.U. Transfer of Control Call Sign or Lead Call Sign: WPSS744 Radio Service Code(s) IG TC 0002304893 Licensee: Raps Car Co., Inc. 09/28/2005 M Transferor: League of Mutual Taxi Owners Federal Credit Union No. -
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. -
Bell Telephone Magazine
»y{iiuiiLviiitiJjitAi.¥A^»yj|tiAt^^ p?fsiJ i »^'iiy{i Hound / \T—^^, n ••J Period icsl Hansiasf Cttp public Hibrarp This Volume is for 5j I REFERENCE USE ONLY I From the collection of the ^ m o PreTinger a V IjJJibrary San Francisco, California 2008 I '. .':>;•.' '•, '•,.L:'',;j •', • .v, ;; Index to tne;i:'A ";.""' ;•;'!!••.'.•' Bell Telephone Magazine Volume XXVI, 1947 Information Department AMERICAN TELEPHONE AND TELEGRAPH COMPANY New York 7, N. Y. PRINTKD IN U. S. A. — BELL TELEPHONE MAGAZINE VOLUME XXVI, 1947 TABLE OF CONTENTS SPRING, 1947 The Teacher, by A. M . Sullivan 3 A Tribute to Alexander Graham Bell, by Walter S. Gifford 4 Mr. Bell and Bell Laboratories, by Oliver E. Buckley 6 Two Men and a Piece of Wire and faith 12 The Pioneers and the First Pioneer 21 The Bell Centennial in the Press 25 Helen Keller and Dr. Bell 29 The First Twenty-Five Years, by The Editors 30 America Is Calling, by IVilliani G. Thompson 35 Preparing Histories of the Telephone Business, by Samuel T. Gushing 52 Preparing a History of the Telephone in Connecticut, by Edward M. Folev, Jr 56 Who's Who & What's What 67 SUMMER, 1947 The Responsibility of Managcincnt in the r^)e!I System, by Walter S. Gifford .'. 70 Helping Customers Improve Telephone Usage Habits, by Justin E. Hoy 72 Employees Enjoy more than 70 Out-of-hour Activities, by /()/;// (/. Simmons *^I Keeping Our Automotive Equipment Modern. l)y Temf^le G. Smith 90 Mark Twain and the Telephone 100 0"^ Crossed Wireless ^ Twenty-five Years Ago in the Bell Telephone Quarterly 105 Who's Who & What's What 107 3 i3(J5'MT' SEP 1 5 1949 BELL TELEPHONE MAGAZINE INDEX. -
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. -
X Band Transceiver SDR for Small Satellites Rev.02/2018 Physical Layer According to CCSDS Optional High Speed Proprietary Physical Layer
X Band Transceiver SDR for Small Satellites Rev.02/2018 physical layer according to CCSDS optional high speed proprietary physical layer Applications SDR high speed data links Micro, nano or pico satellite usage Bidirectional communication links Downlink / TM & Payload 25 Mbps+ Uplink / Tele-command 64 kbps+ XLink is an advanced transceiver system Features (Software Defined Radio - SDR) for X band . Fully featured and transparent bidirectional communication links of small satellites in LEO X band transceiver (SDR) environment. CCSDS compliant The mechanical dimensions fit for 1U CubeSat as well as for larger satellites. Flight grade tested design The radio interface and protocol are developed . Compact case and low power consumption according to standard CCSDS protocols. extra flat patch antenna design matched to Downlink data rates with net payload rates of customer specific frequencies 25 Mbps+ will be possible. Supported . Low cost COTS design modulation schemes include BPSK, QPSK and . Short delivery time higher order types of modulation with appropriate FEC encoding schemes. Key Specifications Based on the general concept, even higher data rates of more than 100 Mbps may be • X band TX operation: 8,025-8,500 MHz feasible. • X band RX operation: 7,145-7,250 MHz The satellite receiver (Uplink) used for • Operational mode: FDD / Full duplex telecommand purposes of the satellites is • Data rate Sat2Ground: 25 Mbps+ designed for a standard CCSDS BPSK with BCH • Data rate Ground2Sat: 64 kbps+ coding at least 64 kbps. Alternative X band or • Linear RF output power: up to +30 dBm S band uplink receiver frequencies are usable. (2x +27 dBm) Adaptive modulation and coding schemes (AMC) are applicable to maximize data • automatic Doppler shift throughput. -
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. -
Mr. Eyal Copitt, Spacecom, SVP Africa
Mr. Eyal Copitt, Spacecom, SVP Africa What has your client been up to in Africa over the last year? Please highlight any key deployments. Spacecom’s work in 2010 was readying itself for the launch of its AMOS-5 satellite scheduled for Q3-2011 to primarily serve the growing African market. During the past year, we began pre-selling capacity on the satellite and arranging agreements with new clients and partners in the region. We also solidified and expanded our sales team to ensure that our efforts in Africa will be successful as well as conduct very detailed market studies of the various regions and countries we will be addressing. The AMOS-5 satellite, to be located at 17°E, will bring new business to our company and will be a powerful platform offering a pan-African C-band beam connecting Europe and the Middle East alongside three Ku-band regional beams. Its 14x72 MHz and 4x36 MHz C- band transponders combined with 18x72 MHz Ku transponders will enable it to be a prime carrier of African traffic in the years to come in both broadcast and data services. We are bullish on the market and look forward to announcing new deals for pre-capacity in the next few months. AMOS-5 enables us to become a multi-regional satellite operator and positions Spacecom as an attractive source of C-band and Ku-band capacity for a variety of African and African-related businesses, including telcos, cellular operators, broadcasters, governments and others. How have they seen the wireless communications market adapt and evolve in Africa in 2010? Spacecom has set its sights on Africa.