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Technical Details of the Elliott 152 and 153
Appendix 1 Technical Details of the Elliott 152 and 153 Introduction The Elliott 152 computer was part of the Admiralty’s MRS5 (medium range system 5) naval gunnery project, described in Chap. 2. The Elliott 153 computer, also known as the D/F (direction-finding) computer, was built for GCHQ and the Admiralty as described in Chap. 3. The information in this appendix is intended to supplement the overall descriptions of the machines as given in Chaps. 2 and 3. A1.1 The Elliott 152 Work on the MRS5 contract at Borehamwood began in October 1946 and was essen- tially finished in 1950. Novel target-tracking radar was at the heart of the project, the radar being synchronized to the computer’s clock. In his enthusiasm for perfecting the radar technology, John Coales seems to have spent little time on what we would now call an overall systems design. When Harry Carpenter joined the staff of the Computing Division at Borehamwood on 1 January 1949, he recalls that nobody had yet defined the way in which the control program, running on the 152 computer, would interface with guns and radar. Furthermore, nobody yet appeared to be working on the computational algorithms necessary for three-dimensional trajectory predic- tion. As for the guns that the MRS5 system was intended to control, not even the basic ballistics parameters seemed to be known with any accuracy at Borehamwood [1, 2]. A1.1.1 Communication and Data-Rate The physical separation, between radar in the Borehamwood car park and digital computer in the laboratory, necessitated an interconnecting cable of about 150 m in length. -
ODQN 10-1.Indd
National Aeronautics and Space Administration Orbital Debris Quarterly News Volume 10, Issue 1 January 2006 Collision Avoidance Maneuver Performed by NASA’s Terra Spacecraft Inside... The Terra spacecraft, often referred to as the ignator 1983-063C, U.S. Satellite Number 14222) fl agship of NASA’s Earth Observing System (EOS), would come within 500 m of Terra on 23 October, successfully performed a small collision avoidance GSFC and SSN personnel undertook a more de- Large Area Debris maneuver on 21 October 2005 to ensure safe passage tailed assessment of the coming conjunction. Collector (LAD-C) by a piece of orbital debris two days later. This ac- The Scout debris was in an orbit with an alti- Update ........................2 tion demonstrated the effectiveness of a conjunction tude similar to that of Terra (approximately assessment procedure implemented in 2004 680 km by 710 km), but its posigrade Revision of Space by personnel of the NASA Goddard inclination of 82.4° and different orbit Shuttle Wing Leading Space Flight Center (GSFC) and the plane meant that a collision would have Edge Reinforced U.S. Space Surveillance Network occurred at a high velocity of near- (SSN). The trajectories of Terra ly 12 km/s. By 21 October Carbon-Carbon Failure and its companion EOS space- refi ned analysis of the Criteria Based on craft are frequently com- future close approach Hypervelocity Impact pared with the orbits of indicated that the miss and Arc-Jet Testing ...3 thousands of objects distance was only ap- tracked by the SSN proximately 50 m with Object Reentry to determine if an an uncertainty that Survivability Analysis accidental collision yielded a probability Tool (ORSAT) – is possible. -
Serving Mission Critical Communication Needs
SERVING MISSION CRITICAL COMMUNICATION NEEDS INMARSAT PLC ANNUAL REPORT AND ACCOUNTS 2010 OUR BUSINESS Inmarsat is the world’s leading provider of a comprehensive portfolio of global mobile satellite services for use on land, at sea and in the air. We provide voice and data connectivity to end-users through the most versatile and reliable network in the world, giving us the capability to deliver innovative services and solutions on an unprecedented scale. We have been able to sustain strong revenue and profit growth because our experience, commitment, people and network infrastructure enable us and our partners to benefit from market opportunities in both buoyant and turbulent economic conditions. GLOBAL REACH EUROPE European NORTH AMERICA Investment Boeing signs Bank funds KYRGYZSTAN contract for Global Alphasat TSF supports Xpress satellites UN and NGO MIDDLE EAST monitors Oman Air debuts GSM and WiFi SINGAPORE HAITI access for Global launch of passengers 10,500 families IsatPhone Pro at call friends and PAKISTAN BRAZIL ITU deploys CommunicAsia loved-ones BGAN used after quake BGAN to relay telemedicine election results for fl ood victims SOUTH AFRICA World Cup AUSTRALIA ARGENTINA charity marathon Frontline role Dakar Rally CHILE uses BGAN in Queensland Media report debut for as cyclone miners’ rescue IsatPhone Pro follows fl oods via BGAN CONTENTS 2010 OPERATIONS GOVERNANCE FINANCIAL STATEMENTS 01 Financial Highlights 34 Board of Directors 59 Independent Auditors’ 62 Consolidated Statement 105 Company Balance Sheet Report to the Members -
Aerospace, Defense, and Government Services Mergers & Acquisitions
Aerospace, Defense, and Government Services Mergers & Acquisitions (January 1993 - April 2020) Huntington BAE Spirit Booz Allen L3Harris Precision Rolls- Airbus Boeing CACI Perspecta General Dynamics GE Honeywell Leidos SAIC Leonardo Technologies Lockheed Martin Ingalls Northrop Grumman Castparts Safran Textron Thales Raytheon Technologies Systems Aerosystems Hamilton Industries Royce Airborne tactical DHPC Technologies L3Harris airport Kopter Group PFW Aerospace to Aviolinx Raytheon Unisys Federal Airport security Hydroid radio business to Hutchinson airborne tactical security businesses Vector Launch Otis & Carrier businesses BAE Systems Dynetics businesses to Leidos Controls & Data Premiair Aviation radios business Fiber Materials Maintenance to Shareholders Linndustries Services to Valsef United Raytheon MTM Robotics Next Century Leidos Health to Distributed Energy GERAC test lab and Technologies Inventory Locator Service to Shielding Specialities Jet Aviation Vienna PK AirFinance to ettain group Night Vision business Solutions business to TRC Base2 Solutions engineering to Sopemea 2 Alestis Aerospace to CAMP Systems International Hamble aerostructure to Elbit Systems Stormscope product eAircraft to Belcan 2 GDI Simulation to MBDA Deep3 Software Apollo and Athene Collins Psibernetix ElectroMechanical Aciturri Aeronautica business to Aernnova IMX Medical line to TransDigm J&L Fiber Services to 0 Knight Point Aerospace TruTrak Flight Systems ElectroMechanical Systems to Safran 0 Pristmatic Solutions Next Generation 911 to Management -
Global Maritime Distress and Safety System (GMDSS) Handbook 2018 I CONTENTS
FOREWORD This handbook has been produced by the Australian Maritime Safety Authority (AMSA), and is intended for use on ships that are: • compulsorily equipped with GMDSS radiocommunication installations in accordance with the requirements of the International Convention for the Safety of Life at Sea Convention 1974 (SOLAS) and Commonwealth or State government marine legislation • voluntarily equipped with GMDSS radiocommunication installations. It is the recommended textbook for candidates wishing to qualify for the Australian GMDSS General Operator’s Certificate of Proficiency. This handbook replaces the tenth edition of the GMDSS Handbook published in September 2013, and has been amended to reflect: • changes to regulations adopted by the International Telecommunication Union (ITU) World Radiocommunications Conference (2015) • changes to Inmarsat services • an updated AMSA distress beacon registration form • changes to various ITU Recommendations • changes to the publications published by the ITU • developments in Man Overboard (MOB) devices • clarification of GMDSS radio log procedures • general editorial updating and improvements. Procedures outlined in the handbook are based on the ITU Radio Regulations, on radio procedures used by Australian Maritime Communications Stations and Satellite Earth Stations in the Inmarsat network. Careful observance of the procedures covered by this handbook is essential for the efficient exchange of communications in the marine radiocommunication service, particularly where safety of life at sea is concerned. Special attention should be given to those sections dealing with distress, urgency, and safety. Operators of radiocommunications equipment on vessels not equipped with GMDSS installations should refer to the Marine Radio Operators Handbook published by the Australian Maritime College, Launceston, Tasmania, Australia. No provision of this handbook or the ITU Radio Regulations prevents the use, by a ship in distress, of any means at its disposal to attract attention, make known its position and obtain help. -
Updated Analysis of Inmarsat and Iridium Aeronautical Services in the Same Oceanic Airspace
E.F.C.LaBerge Senior Fellow, Honeywell CNS RTC June 18, 2008 [email protected] Updated Analysis of Inmarsat and Iridium Aeronautical Services in the Same Oceanic Airspace. 1 IEEE/AIAA 26th DASC, October 2007, Paper 213 EFC LaBerge & D. Zeng Purpose and Scope of the Analysis • Investigate Iridium AMSS/AMS(R)S and Inmarsat AMSS/AMS(R)S on separate aircraft in the same oceanic airspace • Analysis is limited to Oceanic Airspace structured following DO-306 guidelines, since FANS-1/A datalink Air Traffic Service (ATS) has widespread approval for operations in oceanic airspace • Conclusions are not applicable to other operational scenarios or airspace, including: - Polar, continental enroute, terminal, approach, and airport surface airspace as defined in Eurocontrol/FAA COCR document; - Simultaneous independent operation of Iridium and Inmarsat AESes on the same aircraft; and - All non-aeronautical terminals and non-aeronautical services 2 Released to ICAO ACP WGM June 18, 2008 Conclusions • The probability of Inmarsat AMSS/AMS(R)S causing a service interruption that would affect the availability of Iridium AMSS/AMS(R)S operating on separate aircraft in oceanic airspace is very small • In oceanic airspace, Inmarsat AMSS/AMS(R)S out of band emissions from one aircraft do not cause harmful interference to Iridium AMSS/AMS(R)S on another aircraft: - The functioning of Iridium AMSS/AMS(R)S is not endangered; - No serious degradation, obstruction or repeated interruption of the operation of Iridium AMSS/AMS(R)S 3 Released to ICAO ACP WGM June 18, 2008 Full disclosure, etc. • This work was based on the volumetric interference approach briefed to AMCP WGA in 1998-2000… • …and supported by Iridium, LLC (the old Iridium). -
Is Iot the Next Industrial Satellite Communication Revolution?
WHITEPAPER: IS IOT THE NEXT INDUSTRIAL SATELLITE COMMUNICATION REVOLUTION? By Oscar Glottmann, Spacebridge Inc. The Internet of Things (IoT) and associated expected to grow 23 percent annually, and MachineTo-Machine (M2M) connectivity of the 28 billion total devices that will be has been named the next Industrial connected by 2021, close to 16 billion will be Revolution, as it will bring major changes in IoT devices. the way all businesses, governments, and people will interact with each other, as well Other notable forecasts summed up as with the entire world. In this article, we will by Forbes(*2) on November 2016 are explore if IoT/M2M will also bring about the McKinsey’s estimates that the total IoT next Industrial Satellite Communications market size in 2015 was up to $900M, (SATCOM) Revolution. Forecasts for growth growing to $3.7B in 2020 attaining a 32.6% and expected number of IoT/M2M devices CAGR, the General Electric prediction are staggering. Just to take one example, that the Industrial Internet of Things (IoT) Ericsson Mobility Report(*1) beginning investment is expected to top $60 trillion of 2016 predicts IoT will overtake mobile during the next 15 years, and the IHS phones by 2018, and predicts that between forecast predicting that the IoT market will 2015 and 2021 the number of IoT/M2M grow from an installed base of 15.4 billion connected devices will grow 23 percent devices in 2015 to 30.7 billion devices in annually. Furthermore, Ericsson predicts 2020 and 75.4 billion in 2025. the number of IoT connected devices is Predictions are predictions, but one thing is for certain, IoT is going to be big. -
Harnessing the Right Inmarsat Service Successfully for Your Business Manoj Mohindra, Solutions & Sales Engineering, Inmarsat Maritime
Harnessing the Right Inmarsat Service Successfully for your Business Manoj Mohindra, Solutions & Sales Engineering, Inmarsat Maritime © Inmarsat confidential What I will cover? 1. The Maritime Product Portfolio 2. Inmarsat Adding Value 3. A look at the future of Maritime Communications First things first - INMARSAT! " ! Strong Maritime presence with 32 years of experience " ! 500,000 Global terminals •! 250,000 maritime terminals •! >30,000 FleetBroadband active installations " ! The only GMDSS provider for Maritime " ! Future secure, Alphasat & Global Xpress " ! We are the Gold Standard – for all our Markets. Inmarsat confidential 1. Maritime Product Portfolio (a) Networks / Satellites (b) Terminals (c) Unique Capability Committed to servicing User Needs Realities of today & into the future I- I- I- AlphaSat Global Xpress 4 4 4 !""#$ !""%$ !""&$ !""'$ !""($ !"")$ !""*$ !"+"$ !"++$ !"+!$ !"+#$ !"+%$ !"+&$ !"+'$ !"+($ !"+)$ " ! L-band to remain a major component of Inmarsat services Future Needs driven by requirements for: " ! A new generation of broadband MSS at Ka-band •! high bandwidth demand, •! worldwide coverage, " ! Independent from L-band •! dynamic / flexible resource mgnt. constellation, but integrated as a service offering Provide the capacity where it is needed, when it is needed! " ! Life Expectancies into late 2020’s © Inmarsat confidential a1. Existing & Evolved I-2 & I-3 Satellite Network (8) a2. Existing & Evolved (E&E) (I2 & I3 Satellites) 7 a3. Three Inmarsat BGAN I-4 Satellites F3* F2 F1 F3* 3 Satellites at 53°W, 64°E -
GEC Computers Ltd
V1 January 2015 GEC Computers Ltd. Origins. In 1968 the real-time computing interests of AEI, Elliott-Automation, English Electric, Marconi and GEC, were consolidated into a single company [ref. 1]. It traded initially as Marconi Elliott Computer Systems Ltd (MECS) and then, after 1971, as GEC Computers Ltd. English Electric obtained the non-computing products and the mainframe data processing products were transferred to ICT/ICL. MECS, and GEC Computers, were for many years based at Borehamwood, though the specialist aerospace computing activities were soon transferred to Marconi-Elliott Avionics Systems Ltd. at Rochester. Initially, the range of MECS computers was inherited from Marconi and Elliott-Automation and comprised the MYRIAD series, M2100 series (a small-scale 16-bit multiprocessor for real-time control]), and the 900 series (see below). About 50% of the applications for these computers were described as ‘military’. The other 50% was made up roughly equally of the following applications areas: Industrial, Laboratory, Marine, Education, Traffic control, Communications, Medical. The GEC 900 series of computers [refs. 2- 4], though first introduced in 1961, had a life extending into the 1980s with machines such as the 920ATC. By then developments had for several years been based firmly at Rochester, under various titles such as GEC-Marconi Avionics Ltd. and eventually BAE Systems. The 900 series is described elsewhere, in the Mainframes section of the Our Computer Heritage website. [ref. 2]. The GEC 2000 and 4000 families. By 1970 GEC Computers Ltd. was working at the Computer Research Laboratory (CRL), Borehamwood, on three new computer ranges. These were known internally as Alpha, Beta, and Gamma. -
Inmarsat Mini-C Mobile Earth Station
INMARSAT MINI-C MOBILE EARTH STATION MODEL FELCOM 16 SAFETY INSTRUCTIONS WARNING CAUTION Do not open the equipment. Use the proper fuse. Hazardous voltage which can Use of a wrong fuse can result in fire or cause electrical shock, burn permanent damage to the equipment. or serious injury exists inside the equipment. Only qualified WARNING LABEL personnel should work inside A warning label is attached to the the equipment. communication unit. Do not remove the label. If the label is missing or damaged, Hazardous microwave. contact your dealer about replacement. Do not approach within 60 cm of the antenna radome WARNING Name: Warning Label (1) when it is transmitting. To avoid electrical shock, do not Type: 86-003-1011 remove cover. No user-serviceable Code No.: 100-236-741 Microwave radiation can be parts inside. harmful to the human body, particularey the eyes. Radiation Level At 10W/m 2 60 cm Do not disassemble or modify the equipment. Fire, electrical shock or serious injury can result. Turn off the power immediately if water leaks into the equipment or the equip- ment is emitting smoke or fire. Continued use of the equipment can cause fire or electrical shock. Any repair work must be done by a licensed radio technician. Improper repair work can cause electrical shock or fire. i TABLE OF CONTENTS FOREWORD.........................................................................................................vi SYSTEM CONFIGURATION ..............................................................................viii INMARSAT C SYSTEM OVERVIEW -
PRFP-11) & Interconnectivity Workshop 26-30 November 2019, Apia, SAMOA
11th APT Policy and Regulation Forum for Pacific (PRFP-11) & Interconnectivity Workshop 26-30 November 2019, Apia, SAMOA Workshop Topic ENABLERS FOR A BETTER CONNECTED PACIFIC - New Satellite Technologies and Services (MSS, ESIM and LEOs) Dr Bob Horton Consultant Satellite Industry ENABLERS FOR A BETTER CONNECTED PACIFIC - New Satellite Technologies and Services (MSS and LEOs) CONTENTS • Examples of progress : MSS, ESIM – Inmarsat LEOs – OneWeb • Pacific Needs - understanding and participating in the regional/global environment - the Pacific : a “Collection of Islands” or an “Island Collective”? - opportunities overdue in APAC Inmarsat use of spectrum L band Ka band User links: 1626.5-1660.5 MHz ↑, 1525-1559 Feeder link ↑ : 27.5 – 30.0 GHz MHz↓ Feeder link↓ : 17.7 – 20.2 GHz Extended L-band: User link ↑ : 29.0 – 30.0 GHz User link↓ : 19.2 – 20.2 GHz User links: 1668-1675 MHz ↑, 1518 MHz-1525 MHz ↓ Used by Inmarsat Global Express satellites S band Used by Inmarsat-4 satellites and Alphasat Feeder link ↑ : 27.5 – 29.5 GHz Feeder link↓ : 17.7 – 19.7 GHz User link ↑ 1980-2010MHz Q/V band User link↓ : 2170-2200MHz C band 37.5-42.5 GHz ↓ Used by Europasat Feeder links for L-band satellites operate in 47.2-50.2 GHz + 50.4-51.4 GHz ↑ the bands 3550 – 3700 MHz and 6425 – - Planned for future satellites to free 6575 MHz through more than 20 Land Earth Stations up Ka-band for user terminals TT&C operated in standard C-band on most - Developmental payload on Alphasat Inmarsat satellites Inmarsat and Extended L-band Extended L-band will be available -
Marconi Wireless Telegraph Company of America (Assets Acquired by RCA in 1920) Marconi International Marine Communication Co
1/24/2019 Marconi Company - Wikipedia Marconi Company The Marconi Company was a British telecommunications and engineering Marconi Company Ltd company that did business under that name from 1963 to 1987. It was derived from earlier variations in the name and incorporation, spanning a period from Former type Private company its inception in 1897 until 2006, during which time it underwent numerous Industry Telecommunications changes, mergers and acquisitions. The company was founded by the Italian Fate Acquired by GEC inventor Guglielmo Marconi and began as the Wireless Telegraph & (1968) Signal Company. The company was a pioneer of wireless long distance Renamed to GEC- communication and mass media broadcasting, eventually becoming one of the Marconi Ltd UK's most successful manufacturing companies. In 1999, its defence (1987) manufacturing division, Marconi Electronic Systems, merged with British Predecessor Wireless Telegraph Aerospace to form BAE Systems. In 2006, extreme financial difficulties led to & Signal Company the collapse of the remaining company, with the bulk of the business acquired (1897–1900) by the Swedish telecommunications company, Ericsson. Marconi's Wireless Telegraph Company (1900–1963) Successor CMC Electronics Contents (1903–present) GEC-Marconi Ltd History Naming history (1987–1998) Early history BAE Systems Operations as English Electric subsidiary (1999 to present) Expansion in Canada Marconi plc Expansion as GEC subsidiary (1999–2003) Marconi Corporation Marconi name today plc See also (2003–2006) References