Application of Communications Satellite to Educational Development; an Overview of the Washington University Program
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Factory Radio Communications
0 rf indoor collllllunicafions ___________ Factory Radio Communications Noise and propagation measurements reveal/imitations for UHF/microwave i'ndoor radio communication systems By Theodore S. Rappaport Virginia Polytechnic Institute and State University A glimpse into a typical factory re· any type of tether will require a radio In Japan, spectrum has been set aside veals a high degree of automation has system for control. Optical systems are for 300 mW, 4800 bps indoor radio .entered into the work place. Computer viable, but become inoperative when systems operating in the 400 MHz and driven automated test benches, wired obstructed. Furthermore, radio systems 2450 MHz bands (4). guided robots and PC-controlled drill will be us~ful for quickly and cheaply Accurate characterization of the oper presses are a few examples of the connecting often moved manufacturing ating channel is a mandatory prerequi proliferation of computer technology equipment and computer terminals. Ra site for the development of reliable and automation in manufacturing. The dio will also accommodate reconfig wideband indoor radio systems. Radio boom in automation has created a need urable voice/data communications for channel propagation data from factory for reliable real-time communications in other facets of factory and office building buildings have been· made available for factories. In 1985, the Manufacturing operation and may eventually be used the first time through a research pro Automation Protocol (MAP) networking in homes and offices to provide univer gram sponsored by NSF and Purdue standard was established by manufac- sal digital portable communications (1 ). University. As shown here, it is not . turing leaders to encourage commer Presently, communications· between environmental noise, but rather multi cialization of high data rate communica computers and automated machines are path propagation that limits the capacity tions hardware for use in computer conducted almost exclusively over ca of a radio link. -
Detecting and Locating Electronic Devices Using Their Unintended Electromagnetic Emissions
Scholars' Mine Doctoral Dissertations Student Theses and Dissertations Summer 2013 Detecting and locating electronic devices using their unintended electromagnetic emissions Colin Stagner Follow this and additional works at: https://scholarsmine.mst.edu/doctoral_dissertations Part of the Electrical and Computer Engineering Commons Department: Electrical and Computer Engineering Recommended Citation Stagner, Colin, "Detecting and locating electronic devices using their unintended electromagnetic emissions" (2013). Doctoral Dissertations. 2152. https://scholarsmine.mst.edu/doctoral_dissertations/2152 This thesis is brought to you by Scholars' Mine, a service of the Missouri S&T Library and Learning Resources. This work is protected by U. S. Copyright Law. Unauthorized use including reproduction for redistribution requires the permission of the copyright holder. For more information, please contact [email protected]. DETECTING AND LOCATING ELECTRONIC DEVICES USING THEIR UNINTENDED ELECTROMAGNETIC EMISSIONS by COLIN BLAKE STAGNER A DISSERTATION Presented to the Faculty of the Graduate School of the MISSOURI UNIVERSITY OF SCIENCE AND TECHNOLOGY In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY in ELECTRICAL & COMPUTER ENGINEERING 2013 Approved by Dr. Steve Grant, Advisor Dr. Daryl Beetner Dr. Kurt Kosbar Dr. Reza Zoughi Dr. Bruce McMillin Copyright 2013 Colin Blake Stagner All Rights Reserved iii ABSTRACT Electronically-initiated explosives can have unintended electromagnetic emis- sions which propagate through walls and sealed containers. These emissions, if prop- erly characterized, enable the prompt and accurate detection of explosive threats. The following dissertation develops and evaluates techniques for detecting and locat- ing common electronic initiators. The unintended emissions of radio receivers and microcontrollers are analyzed. These emissions are low-power radio signals that result from the device's normal operation. -
Comparing Futures for the Sacramento-San Joaquin Delta
comparing futures for the sacramento–san joaquin delta jay lund | ellen hanak | william fleenor william bennett | richard howitt jeffrey mount | peter moyle 2008 Public Policy Institute of California Supported with funding from Stephen D. Bechtel Jr. and the David and Lucile Packard Foundation ISBN: 978-1-58213-130-6 Copyright © 2008 by Public Policy Institute of California All rights reserved San Francisco, CA Short sections of text, not to exceed three paragraphs, may be quoted without written permission provided that full attribution is given to the source and the above copyright notice is included. PPIC does not take or support positions on any ballot measure or on any local, state, or federal legislation, nor does it endorse, support, or oppose any political parties or candidates for public office. Research publications reflect the views of the authors and do not necessarily reflect the views of the staff, officers, or Board of Directors of the Public Policy Institute of California. Summary “Once a landscape has been established, its origins are repressed from memory. It takes on the appearance of an ‘object’ which has been there, outside us, from the start.” Karatani Kojin (1993), Origins of Japanese Literature The Sacramento–San Joaquin Delta is the hub of California’s water supply system and the home of numerous native fish species, five of which already are listed as threatened or endangered. The recent rapid decline of populations of many of these fish species has been followed by court rulings restricting water exports from the Delta, focusing public and political attention on one of California’s most important and iconic water controversies. -
F, I3/ M EARTH VIEW: a Business Guide to Orbital Remote Sensing
_Ot-//JJ J zJ v - _'-.'3 7 F, i3/ m EARTH VIEW: A Business Guide to Orbital Remote Sensing NgI-Z4&71 (_!ASA-C_-ISB23_) EAsT VIEW: A 3USINESS GUI_E TO ORBITAL REMOTE SENSING (Houston Univ.) 13I p CSCL OBB Unclos G3/_3 001_137 Peter C. Bishop July 1990 Cooperative Agreement NCC 9-16 Research Activity No. IM.1 NASA Johnson Space Center Office of Commercial Programs Space Station Utilization Office "=.,. © Research Institute for Computing and Information Systems University of Houston - Clear Lake - T.E.C.H.N.I.C.A.L R.E.P.O.R.T Iml i I Jg. I k . U I i .... 7X7 iml The university of Houston-Clear Lake established the Research Institute for Computing and Information systems in 1986 to encourage NASA Johnson Space Center and local industry to actively support research in the computing and r' The information sciences. As part of this endeavor, UH-Clear Lake proposed a _._ partnership with JSC to jointly define and manage an integrated program of research in advanced data processing technology needed for JSC's main missions, including RICIS administrative, engineering and science responsibilities. JSC agreed and entered itffo : " a three-year cooperatlveagreement with UH-Clear _ke beginning in May, 1986, to ii jointly plan and execute such research through RICIS. Additionally, under Concept Cooperative Agreement NCC 9-16, computing and educational facilities are shared by the two institutions to conduct the research. The mission of RICIS is to conduct, coordinate and disseminate research on _-.. -- : computing and information systems among researchers, sponsors and users from UH-Clear Lake, NASA/JSC, and other research organizations. -
HF+50 Mhz ALL MODE COMMUNICATIONS RECEIVER Expanded Frequency Coverage Imize Image and Spurious Responses for DSP Capabilities Better Signal fidelity
HF+50 MHz ALL MODE COMMUNICATIONS RECEIVER Expanded frequency coverage imize image and spurious responses for DSP capabilities better signal fidelity. The IC-R75 covers a frequency range DSP (Digital Signal Processor) filtering in the *1 Not guaranteed. that’s wider than other HF receivers; AF stage is available with the optional UT- *2 Not guaranteed; When PREAMP OFF; CW 0.03–60.000000 MHz*. This wide fre- narrow 500 Hz bandwidth; 100 kHz channel 106 DSP UNIT*. The DSP provides the fol- quency coverage allows you to listen to a spacing lowing functions: variety of communications including ma- * Already installed with some versions. rine communications, amateur radio, short • Dynamic range characteristics example Noise reduction: wave radio broadcasts and more. Intercept points Measuring condition Pulls desired AF signals from noise. Out- *Guaranteed 0.1–29.99 MHz and 50–54 MHz only 140 Frequency : 14.15 MHz (100 kHz separation) Mode : CW 120 Bandwidth : 500 Hz (both 2nd and 3rd IF) standing S/N ratio is achieved, providing PREAMP, ATT : OFF 100 clean audio in SSB, AM and FM. Pull weak 80 Preamp1 ON High stability receiver circuit 60 signals right out of the noise. Signal output Preamp OFF 40 Receiver output level (dB) output level Receiver Icom’s latest wide band technology pro- 3rd IMD 20 S+N = 3 dB N output Comparison of receive signal speaker output 0 vides highly stable receive sensitivity over –140 –120 –100 –80 –60 –40 –20 ±0 16.0 22.0 103.5 dB (PREAMP1 ON) 104.5 dB (PREAMP OFF) Receiver input level the entire receive frequency range. -
Testing and Troubleshooting Digital RF Communications Receiver Designs Application Note 1314
Testing and Troubleshooting Digital RF Communications Receiver Designs Application Note 1314 I Q Wireless Test Solutions Table of Contents Page Page 1 Introduction 15 3. Troubleshooting Receiver Designs 2 1. Digital Radio Communications Systems 15 3.1 Troubleshooting Steps 3 1.1 Digital Radio Transmitter 15 3.2 Signal Impairments and Ways to Detect Them 3 1.2 Digital Radio Receiver 16 3.2.1 I/Q Impairments 3 1.2.1 I/Q Demodulator Receiver 17 3.2.2 Interfering Tone or Spur 4 1.2.2 Sampled IF Receiver 17 3.2.3 Incorrect Symbol Rate 4 1.2.3 Automatic Gain Control (AGC) 18 3.2.4 Baseband Filtering Problems 5 1.3 Filtering in Digital RF Communications Systems 19 3.2.5 IF Filter Tilt or Ripple 19 3.3 Table of Impairments Versus Parameters Affected 6 2. Receiver Performance Verification Measurements 20 4. Summary 6 2.1 General Approach to Making Measurements 7 2.2 Measuring Bit Error Rate (BER) 20 5. Appendix: From Bit Error Rate (BER) to Error Vector Magnitude (EVM) 8 2.3 In-Channel Testing 8 2.3.1 Measuring Sensitivity at a Specified BER 22 6. Symbols and Acronyms 9 2.3.2 Verifying Co-Channel Rejection 23 7. References 9 2.4 Out-of-Channel Testing 9 2.4.1 Verifying Spurious Immunity 10 2.4.2 Verifying Intermodulation Immunity 11 2.4.3 Measuring Adjacent and Alternate Channel Selectivity 14 2.5 Fading Tests 14 2.6 Best Practices in Conducting Receiver Performance Tests Introduction This application note presents the The digital radio receiver must fundamental measurement principles extract highly variable RF signals involved in testing and troubleshooting in the presence of interference and digital RF communications receivers— transform these signals into close particularly those used in digital RF facsimiles of the original baseband cellular systems. -
Chapter 9: Communications Systems
GCE A level Electronics – Chapter 9: Communications systems Chapter 9: Communications systems Learning Objectives: At the end of this topic you will be able to: • recall that communication is the transfer of meaningful information from one location to another • recall the structure of a simple communication system consisting of: • information source • transmitter/encoder • transmission medium • amplifier/regenerator • receiver/decoder • information destination • recall and explain the relationship between: • bandwidth • data rate • information-carrying capacity • select and apply the equations: available bandwidth • NCH = channel bandwidth • maximum date rate = 2 × available bandwidth • explain the need to multiplex a number of signals onto one transmission medium and describe the principles of frequency and time division multiplexing • describe the role of filters in communication systems • use the decibel scale to express power gain in amplifiers and attenuation in transmission media • select and apply the equation: POUT • G = 10 log = dB 10 P IN • differentiate between noise and distortion • calculate the total gain in a communication system given the power gain or attenuation of its component parts • state what is meant by signal-to-noise ratio • select and apply the equations: PS VS • SNR = 10 log = = 20 log = dB 10 P 10 V N N • state what is meant by signal attenuation and describe the significance of signal attenuation (in dB) for the signal-to-noise ratio 282 © WJEC CBAC Ltd 2018 GCE A level Electronics – Chapter 9: Communications systems Introduction to information transfer Communication is defined as the transfer of meaningful information from one location to another. Over time, many ways of communicating information have evolved, allowing us to transfer information both faster and over greater distances. -
The Evolution of Commercial Launch Vehicles
Fourth Quarter 2001 Quarterly Launch Report 8 The Evolution of Commercial Launch Vehicles INTRODUCTION LAUNCH VEHICLE ORIGINS On February 14, 1963, a Delta launch vehi- The initial development of launch vehicles cle placed the Syncom 1 communications was an arduous and expensive process that satellite into geosynchronous orbit (GEO). occurred simultaneously with military Thirty-five years later, another Delta weapons programs; launch vehicle and launched the Bonum 1 communications missile developers shared a large portion of satellite to GEO. Both launches originated the expenses and technology. The initial from Launch Complex 17, Pad B, at Cape generation of operational launch vehicles in Canaveral Air Force Station in Florida. both the United States and the Soviet Union Bonum 1 weighed 21 times as much as the was derived and developed from the oper- earlier Syncom 1 and the Delta launch vehicle ating country's military ballistic missile that carried it had a maximum geosynchro- programs. The Russian Soyuz launch vehicle nous transfer orbit (GTO) capacity 26.5 is a derivative of the first Soviet interconti- times greater than that of the earlier vehicle. nental ballistic missile (ICBM) and the NATO-designated SS-6 Sapwood. The Launch vehicle performance continues to United States' Atlas and Titan launch vehicles constantly improve, in large part to meet the were developed from U.S. Air Force's first demands of an increasing number of larger two ICBMs of the same names, while the satellites. Current vehicles are very likely to initial Delta (referred to in its earliest be changed from last year's versions and are versions as Thor Delta) was developed certainly not the same as ones from five from the Thor intermediate range ballistic years ago. -
Chapter 2 Radio Receiver Characteristics
Source: Communications Receivers: DSP, Software Radios, and Design Chapter 1 Basic Radio Considerations 1.1 Radio Communications Systems The capability of radio waves to provide almost instantaneous distant communications without interconnecting wires was a major factor in the explosive growth of communica- tions during the 20th century. With the dawn of the 21st century, the future for communi- cations systems seems limitless. The invention of the vacuum tube made radio a practical and affordable communications medium. The replacement of vacuum tubes by transistors and integrated circuits allowed the development of a wealth of complex communications systems, which have become an integral part of our society. The development of digital signal processing (DSP) has added a new dimension to communications, enabling sophis- ticated, secure radio systems at affordable prices. In this book, we review the principles and design of modern single-channel radio receiv- ers for frequencies below approximately 3 GHz. While it is possible to design a receiver to meet specified requirements without knowing the system in which it is to be used, such ig- norance can prove time-consuming and costly when the inevitable need for design compro- mises arises. We strongly urge that the receiver designer take the time to understand thor- oughly the system and the operational environment in which the receiver is to be used. Here we can outline only a few of the wide variety of systems and environments in which radio re- ceivers may be used. Figure 1.1 is a simplified block diagram of a communications system that allows the transfer of information between a source where information is generated and a destination that requires it. -
FM 24-18. Tactical Single-Channel Radio Communications
FM 24-18 TABLE OF CONTENTS RDL Document Homepage Information HEADQUARTERS DEPARTMENT OF THE ARMY WASHINGTON, D.C. 30 SEPTEMBER 1987 FM 24-18 TACTICAL SINGLE- CHANNEL RADIO COMMUNICATIONS TECHNIQUES TABLE OF CONTENTS I. PREFACE II. CHAPTER 1 INTRODUCTION TO SINGLE-CHANNEL RADIO COMMUNICATIONS III. CHAPTER 2 RADIO PRINCIPLES Section I. Theory and Propagation Section II. Types of Modulation and Methods of Transmission IV. CHAPTER 3 ANTENNAS http://www.adtdl.army.mil/cgi-bin/atdl.dll/fm/24-18/fm24-18.htm (1 of 3) [1/11/2002 1:54:49 PM] FM 24-18 TABLE OF CONTENTS Section I. Requirement and Function Section II. Characteristics Section III. Types of Antennas Section IV. Field Repair and Expedients V. CHAPTER 4 PRACTICAL CONSIDERATIONS IN OPERATING SINGLE-CHANNEL RADIOS Section I. Siting Considerations Section II. Transmitter Characteristics and Operator's Skills Section III. Transmission Paths Section IV. Receiver Characteristics and Operator's Skills VI. CHAPTER 5 RADIO OPERATING TECHNIQUES Section I. General Operating Instructions and SOI Section II. Radiotelegraph Procedures Section III. Radiotelephone and Radio Teletypewriter Procedures VII. CHAPTER 6 ELECTRONIC WARFARE VIII. CHAPTER 7 RADIO OPERATIONS UNDER UNUSUAL CONDITIONS Section I. Operations in Arcticlike Areas Section II. Operations in Jungle Areas Section III. Operations in Desert Areas Section IV. Operations in Mountainous Areas Section V. Operations in Special Environments IX. CHAPTER 8 SPECIAL OPERATIONS AND INTEROPERABILITY TECHNIQUES Section I. Retransmission and Remote Control Operations Section II. Secure Operations Section III. Equipment Compatibility and Netting Procedures X. APPENDIX A POWER SOURCES http://www.adtdl.army.mil/cgi-bin/atdl.dll/fm/24-18/fm24-18.htm (2 of 3) [1/11/2002 1:54:49 PM] FM 24-18 TABLE OF CONTENTS XI. -
Mr. Les Kovacs
United Launch Alliance Overview 2016 ITEA Symposium Les Kovacs Director, Executive Branch Affairs October 5, 2016 Copyright © 2012 United Launch Alliance, LLC. Unpublished Work. All Rights Reserved. United Launch Alliance Overview Delta Family Atlas V Family EELV Provides Assured Access for National Security Space Missions Two World Class Launch Systems – Atlas V, Delta IV More Than a Century of Combined Experience in Expendable Launch Systems – Pooled Experience of > 1300 Launches – Legacy Reaching Back to the 1950s Commercial Sales Through Lockheed Commercial Launch Services or 401 431 551 Medium Medium Heavy Boeing Launch Services 4,2 5,4 GTO LEO GTO LEO 4,750 kg – 8,900 kg 8,080 kg – 15,760 kg 4,210 kg – 13,810 kg 7,690 kg – 23,560 kg 10,470 lb – 19,620 lb 17,820 lb – 34,750 lb 9,280 lb – 30,440 lb 16,960 lb – 51,950 lb One Team, One Infrastructure , 100% Mission Success 11 October 2016 | 1 A Sampling of Notable Launches… MSL New Horizons EFT-1 JUNO WGS OTV GPS 11 October 2016 | 2 30 Year Product Road Map Delta-M RD180 Delta-Hvy 2045 Retired Retired Retired BE4 Replaces the RD180 11 OctoberLater 2016 | 3 Upgrade to ACES Retires Delta-Heavy for ¼ the Lift Cost 500 Series Configuration Expanded Existing Centaur Second Stage New Composite New (Common) 5.4m Interstage Diameter Booster New Solid Rocket Boosters Existing 5.4m New Existing PLF BE-4 Avionics Engines & Software New 5.4m Lower PLF Adapter New Composite Heat Shield 1111 October October 2016 2016| 4 | 4 Atlas - Vulcan Evolution 38 34 30 26 5m PLF Single 22 Common Avionics -
Radio Bygones Indexes
INDEX MUSEUM PIECES Broadcast Receivers 78 C2-C4 Radio Bygones, Issues Nos 73-78 Command Sets 73 C1-C4 ARTICLES & FEATURES Crystal Sets from Bill Journeaux’s Collection 74 C4 K. P. Barnsdale’s ZC-1 77 C2 AERONAUTICAL ISSUE PAGE Keith Bentley Collection 75 C2-C4 The Command Set by Trevor Sanderson Michael O’Beirne’s MI TF1417 77 C4 Part 1 73 4 National Wireless Museum, Isle of Wight 74 C3 Part 2 74 28 Replica Lancaster at Pitstone Green Museum 76 C1-C4 Letter 75 32 Russian Volna-K 74 C1-C2 Firing up a WWII Night Fighter Radar AI Mk.4 Tony Thompson’s Ekco PB505 77 C3 by Norman Groom 76 6 NEWS & EVENTS AMATEUR AirWaves (On the Air Ltd) 76 2 Amateur Radio in the 1920s 73 27 Amberley Working Museum 74 2 Maintaining the HRO by Gerald Stancey 76 27 Antique Radio Classified 75 3 77 3 BOOKS 78 3 Tickling the Crystal 75 15 ARI Surplus Team 73 3 Classic Book Review by Richard Q. Marris BBC History Lives! (Website) 76 2 Modern Practical Radio and Television 76 10 BVWS and 405-Alive Merge! 74 3 CHiDE Conservation 74 3 CIRCUITRY Club Antique Radio Magazine 73 2 Invention of the Superhet by Ian Poole 76 22 HMS Collingwood Museum 74 3 Mallory ‘Inductuner’ by Michael O’Beirne 76 28 Confucius He Say Loudly! 74 2 Duxford Radio Society 78 3 CLANDESTINE Eddystone User Group Lighthouse 74 3 Clandestine Radio in the Pacific by Peter Lankshear 73 16 77 3 Spying Mystery by Ben Nock 74 18 78 3 Letter 75 32 Felix Crystalised (BVWS) 77 2 Talking to Mosquitoes by Brian Cannon 77 10 Hallo Hallo 75 3 Letter 78 38 77 3 Jackson Capacitors 76 2 COMMENT Medium Wave Circle