141. Spot Image - HOME Distributor of satellite imagery received from optical and radar remote sensing satellites. This earth observation raster imagery is compatible with all GIS and used for example in land mapping or vegetation monitoring. http://www.spotimage.fr/home/

Palm Islands, Dubai, United Arab Emirates the biggest speculative investment of the beginning of the 21 century! Spot Image becomes TerraSAR-X Services Agent May 2004: 10 new countries join the European Union New price list for ERS and Envisat data effective from May 1st, 2004. Decrease in archive data and new acquisition prices. Legal information Credits

142. Laboratoire Des Sciences De L'Image, De L'Informatique Et De La Télédét Station de r©ception des satellites M©t©osat et NOAA. Strasbourg, France. http://www-grtr.u-strasbg.fr/

HTTP 200 Document follows Date: Thu, 27 May 2004 04:38:55 GMT Server: NCSA/1.5.2 Last-modified: Tue, 23 Jan 2001 15:23:11 GMT Content-type: text/html Content-length: 2300

143. Space Weather: Satellites satellites and Space Weather. The Facts About satellites. http://www.windows.ucar.edu/spaceweather/effects1.html

Satellites and Space Weather The Facts About Satellites What does falling have to do with orbits? The heart of satellite orbits The major types of satellites, orbits and their uses A gallery of invaluable and near real- time data products from space. Number of worldwide satellite launches. Number of satellites in geostationary orbit now. Space Weather Effects Atmospheric Drag Lost Satellites Degraded Solar Panels Electric discharges Phantom commands Last modified prior to September, 2000 by the Windows Team The source of this material is Windows to the Universe , at http://www.windows.ucar.edu/

144. Obsat - Page D'accueil s et pr©dictions de visibilit© mises   jour quotidiennement.......Observation visuelle de satellites artificiels. http://www.obsat.com/

LE PORTAIL SPATIAL FRANCOPHONE dont les missions sur MARS PARTENAIRES :

145. Weather Satellites I soon realised that it could also receive weather satellites that are in polar orbit, and transmit their data on VHF using Automatic Picture Transmission (APT http://www.david-taylor.pwp.blueyonder.co.uk/wxsat/

Software Equipment Antennas Initial Results ... Puzzle 4 - Outlines Weather Satellite Decoding Over Christmas 1998 I decided to act on a long-term but dormant interest that I have, remote imaging. I had purchased a scanner, the Icom IC-R2, again something that I'd been intending to do for a long time, but never actually got around to doing. The IC-R2 is a great box, with lots of opportunities to listen to aircraft and so on. I soon realised that it could also receive weather satellites that are in polar orbit, and transmit their data on VHF using Automatic Picture Transmission (APT) and on UHF using High Resolution Picture Transmission (HRPT). Once I discovered free decoding software on the Internet I was set and I got my first results . I've now added more sets of results including the recent Hekla eruption , the 1999 total solar eclipse , and a radar image of Norway . Roger Ray supplied the image on which this aircraft trail picture is based. The trail is quite thick as the aircraft was circling, and the very low angle of the sun has resulted in a shadow some 50km away just off John o' Groats! Some other puzzle pictures included a cloud effect over Iceland , outlines looking like image-processed pictures , and some radar images However I experienced severe problems with interference from very local pager transmissions (this is mainly a UK issue) and I've put together a few notes on how I've managed to reduce the problem to an acceptable level. My

146. Visual Satellite Observer's Home Page A detailed, interesting, useful collection of information for anyone who wants to view satellites in orbit. http://www.satellite.eu.org/satintro.html

Visual Satellite Observer's Home Page From left to right the above images are: A Soyuz manned capsule. Satellite captured on a long exposure photograph. The external tank caught just after separation during the STS-2 shuttle mission. Note: the preferred URL to use for this page is http://www.satobs.org/satintro.html please update your bookmarks and links! What's new on the VSO Home Page. If you've ever spent some time star gazing shortly after sunset or before sunrise, you've probably noticed one or two "stars" gracefully sailing across the sky. These are orbiting satellites of various types and ages, visible due to the reflection of the Sun's light off their surfaces toward the observer. Satellite observation has much to offer amateur astronomers and space enthusiasts. The challenges involved in spotting a faint, rapidly moving satellite are comparable to spotting a distant galaxy. The hobby leads naturally into such diverse topics as orbital motion, propulsion, mathematics, physics, computer science, commercial, scientific and military applications of satellites, and government space policy. During the first 30 years of the space age, geophysicists used positional measurements of satellites by hobbyists, alongside those of radars and telescopic cameras, to analyze satellite orbit perturbations, revealing details of Earth's upper atmosphere and gravity field.

147. Laser Beamed Power A paper discussing the use of groundbased lasers to provide power for satellites during eclipse http://powerweb.grc.nasa.gov/pvsee/publications/lasers/IAF92_0600.html

NASA Glenn Research Center Presented as paper IAF-92-0600, 43rd IAF Congress, 28 Aug.-5 Sept. 1992, Washington DC. Also available as NASA CR-190793 Laser Beamed Power: Satellite Demonstration Applications Geoffrey A. Landis Sverdrup Technology, Inc. NASA Glenn Research Center 21000 Brookpark Rd., Cleveland, OH 44135 USA and Larry H. Westerlund Satellite Communications Consultants Rockville, MD 20853 USA Abstract It is possible to use a ground-based laser to beam light to the solar arrays of orbiting satellites, to a level sufficient to provide all or some of the operating power required. Near-term applications of this technology to providing supplemental power for existing satellites are discussed. Two missions with significant commercial pay-off are supplementing solar power for radiation-degraded arrays, and providing satellite power during eclipse for satellites with failed batteries. Introduction Beaming of power by laser from the installations on the surface of the Earth to photovoltaic receivers in space is a technology of considerable interest for many applications [1]. An earlier paper [ ] proposed using lasers for eclipse power for communications satellites or other earth-orbiting systems (included as appendix 1 to this report). In this paper it is proposed that a near-term demonstration mission for laser power beaming might be to provide power to existing satellites at or near the end of life due to power system degradation. Such a mission would both demonstrate laser power beaming at a power level that may be achievable with existing technology systems, and also have a large commercial value.

148. BBC News | SCI/TECH | Spy Satellites Retasked Top secret US spy satellites are given new orders to concentrate on Afghanistan. http://news.bbc.co.uk/hi/english/sci/tech/newsid_1548000/1548860.stm

CATEGORIES TV RADIO COMMUNICATE ... INDEX SEARCH You are in: Sci/Tech Front Page World UK ... AudioVideo SERVICES Daily E-mail News Ticker Mobiles/PDAs Feedback ... Low Graphics Tuesday, 18 September, 2001, 11:17 GMT 12:17 UK Spy satellites retasked By BBC News Online science editor Dr David Whitehouse US spy satellites have been given new instructions to concentrate their attention on Afghanistan and the search for Osama Bin Laden, and groups associated with him, sources have told BBC News Online. So-called Signal Intelligence (Sigint) satellites, designed to intercept radio and mobile phone traffic, have been "retasked", as have two spy satellites that take high-resolution images. The use of Sigint satellites marks a departure from normal procedure, as they are not usually used to gather intelligence about dissident groups in that region. BBC News Online also understands that US military sources have also made approaches to two commercial satellite operators, to use data from two private imaging satellites that will be launched in the next few weeks. Following conversations The so-called "retasking" of spy satellites is an unusual step that reflects the seriousness of the response to the hijack plane attacks on New York and Washington DC.

149. OHB-System - Technology For Space Mediumsized system house, with national and international projects in the fields of satellites, manned space flight and technologies for security and reconnaissance. The headquarters are located in Bremen, Germany. http://www.ohb-system.de/

OHB-System AG 28359 Bremen Germany tel.: +49 (0) 421-2020-8 fax: +49 (0) 421-2020-700 ohb@ohb-system.de legal Deutsche Version Satellites Human Spaceflight Space Transportation Security Services Current news on ohb-system.de Transport Rack for International Space Station completed Meet us at Hall 7 Booth 18 OHB-System and Elbit Systems subsidiary ELOP establish Joint Venture Communications satellites for the German federal armed forces` foreign missions

150. The Satellite Encyclopedia The Satellite Encyclopedia is a technical reference containing information on 2000 satellites. Multiple thematic listings (country http://www.tbs-satellite.com/tse/

The Satellite Encyclopedia TSE (short name for "The Satellite Encyclopedia") is a hypertext document built around a dictionary of 2000 satellites. Each satellite fact sheet contains basic information (launch date, official identification...) and extensive description of the payload. TSE is updated every 3 months. TSE in brief Download the Winhelp limited version Order the WWW edition Full ordering information ... Order the Winhelp edition T HE S ATELLITE E NCYCLOPEDIA IN F ACTS Available in Winhelp and WWW formats over 4000 pages see a sample satellite fact sheet multiple thematic listings (per country, launcher, purpose, etc.) 600 high quality see the list the list of satellites on the Clarke Belt slot per slot 2000 satellites covered a detailed list of future launches (250+ satellites with descriptions) 10000 keywords to search from! Published since 1994... 42th edition! Who buys The Satellite Encyclopedia? Space agencies Satellite operators Spacecraft manufacturers Satellite dealers check-out our customer list! Consultants and Engineers Technical libraries check-out our customer list!

151. ExpressVu, DirecWay DW6000, Spectrum Analyzers, Star Choice, Free-to-Air Mpeg-2, Specializes in satellite television sales for Canada. http://kusat.cyberus.ca/

ExpressVu Satellite Television - Direcway DW4000 - Direcway DW6000 - Star Choice Satellite Television - Felec Spectrum Analyzers - Pansat Satellite Receivers Spectrum Analyzers All other

152. NASA Experimental Communications Satellites 1958-1995 NASA Experimental Communications satellites. Contents. NASA has been geosynchronous orbit. RELATED satellites. TDRSS. 93hc138s.gif(68K). The http://roland.lerc.nasa.gov/~dglover/sat/satcom2.html

NO FRAMES FRAMES NASA Experimental Communications Satellites Contents NASA has been active in the development of the communications satellite from the founding of the agency in 1958 to the present day. Communications has been the most successful commercial enterprise in space. Of the hundreds of communications satellites sent into orbit, around 150 are operational today. To enable this success, NASA has launched several experimental satellites to develop the technology needed for commercial applications. This document presents a short history of experimental communications satellites developed by NASA. The projects are covered in chronological order: Introduction Echo Telstar Relay ... Other related projects , such as the Tracking and Data Relay Satellite (TDRS), are also covered. Concluding Remarks Some NASA Links Click on the headings below (satellite names) for more detail. INTRODUCTION This picture shows the latest NASA experimental communications spacecraft, the Advanced Communications Technology Satellite (ACTS), after deployment from the Space Shuttle Discovery on mission STS-51 on September 12, 1993. NASA has been active in the development of the communications satellite from the founding of the agency in 1958 to the present day. Communication is the most successful commercial enterprise in space. Of the hundreds of communications satellites sent into orbit, approximately 150 are operational today. To enable this success, NASA has launched several experimental satellites to develop the technology needed for commercial applications.

153. ESA CEOS Homepage The European Space Agency is a member of the CEOS (Committee for Earth Observation satellites). Committee on Earth Observation satellites (CEOS). http://ceos.esa.int/

The European Space Agency is a member of the CEOS (Committee for Earth Observation Satellites). In cooperation with other space agencies and international organizations, ESA contributes to the development of compatible data products, formats, services, applications and policies, for the benefits of the international user community. CEOS currently has two standing working groups: Working Group on Information Systems and Services (WGISS) WGISS has the goal of coordinating and standardising EO data management and services, addressing the needs of: data providers by assisting them to improve the efficiency of their operations and maximising the utilisation and benefit of the EO data which they gather; and data and information useres by providing simpler and wider access to the resources which they acquire. Working Group on Calibration and Validation (WGCV) WGCV ensures the quality, accuracy and long-term confidence in EO data products the Working Group on Calibration and Validation (WGCV) provides a focus for co-ordination and co-operation in activities related to calibration and validation (cal-val) of Earth observations. CEOS Meeting Calendar IGOS Plenary Meeting CEOS Plenary Meeting Presentations and documentation from both the (ESRIN May 6-10, 2002)

154. Satellite Communications Company - VPN Networks - Telesat Canada Operate a fleet of satellites for the provision of broadcast distribution and telecommunications services. Provides a range of information on services, and operated satellites including Anik and Nimiq . http://www.telesat.ca/

CALL FOR INTEREST Telesat is pleased to announce its newest satellite initiative, Anik F3, and is accepting expressions of interest from Canadian satellite users. Please click here for more information. Canadian communities that need satellite capacity to access broadband are invited to submit applications to the National Satellite Initiative by January 22, 2004. For more information, visit http://broadband.gc.ca SpaceOps 2004 Conference Field Service Representatives Research and Development ... Search Marketing provided by MediaKraft Communications

155. Satellites And The Internet satellites AND THE INTERNET Challenges and Solutions By DC Palter 1st Edition. This book is written for the satellite professional http://www.satnews.com/free/pubs/internetinfo.html

SATELLITES AND THE INTERNET Challenges and Solutions By DC Palter - 1st Edition This book is written for the satellite professional who wants to learn about the design of the Internet and the TCP/IP protocols. In particular, this book focuses on the background needed understand and overcome the performance limitations of TCP/IP when running over satellite in order to be able to design a satellite-based IP network which can take best advantage of expensive satellite bandwidth. With the growth of the Internet, computer networking for e-mail and Web communications by consumers, businesses, and governments has quickly become a larger consumer of bandwidth than telephony. Even voice traffic is migrating to run over IP. This has created an important new market for communications satellites especially in providing links to the many locations across the globe where terrestrial options have difficulty reaching. The growth of the Internet has also made TCP/IP the de facto standard for all computer networking, making it critical for satellite operators and users to understand the fundamentals of TCP/IP. Unfortunately, the TCP protocol is not well designed for long delay, high bit error, and asymmetric bandwidth conditions typical of satellite networks. Consequently, it is necessary for the satellite network architect to understand the cause of these limitations and how to design around them in order to create an efficient, responsive network that does not suffer from the performance constraints and can compete with terrestrial alternatives.

156. Spot Image - HOME Distributor of satellite imagery received from optical and radar remote sensing satellites used for land mapping or vegetation monitoring. http://www.spotimage.fr/

Palm Islands, Dubai, United Arab Emirates the biggest speculative investment of the beginning of the 21 century! Spot Image becomes TerraSAR-X Services Agent May 2004: 10 new countries join the European Union New price list for ERS and Envisat data effective from May 1st, 2004. Decrease in archive data and new acquisition prices. Legal information Credits

157. How Satellites See How satellites See. by Christina Wilder Topics Covered by This Lesson Astronomy/Space Science electromagnetic spectrum; NASA satellites. http://cse.ssl.berkeley.edu/lessons/indiv/wilder/summary.html

How Satellites See by Christina Wilder Grade Levels: Time Requirements: Approximately 2 hours Preparation Time and six 45-min periods Class Time Student Prerequisites: Some understanding of the spectrum, using thermometers, different types of light sources and simple geographical and Earth/Sun/Moon System and artificial satellite concepts Topics Covered by This Lesson: Astronomy/Space Science: electromagnetic spectrum; NASA satellites Physics: electromagnetic spectrum Brief Overview: This project will compare and contrast three NASA satellites: The Extreme Ultraviolet Explorer (EUVE), The Cosmic Background Explorer (COBE), and the Hubble Space Telescope (HST). The lesson includes access to data and images from these three NASA astronomy satellites, contrasting the way the sky appears in three very different electromagnetic wavelengths or colors of light. Other satellite information is included, but the project's focus is a simple introduction to the electromagnetic spectrum as used by the three space observatories. Unit Features: Maps of Earth at Different Projections and Maps of the EUVE Sky at Different Projections (149407 bytes) The Visible Sky (161130 bytes) The Great Observatories (148897 bytes) COBE Spacecraft (159028 bytes) EUVE Spacecraft (215066 bytes) The Electromagnetic Spectrum (166704 bytes) Extreme Ultraviolet Image of the Sky (143043 bytes) Near Infrared Image of the Sky (127796 bytes) Temperature Variations in Cosmic Radiation (COBE) (133419 bytes) Temperatures of the Great Observatories (169190 bytes)

158. Teledesic LLC Development project for the creation of a global, broadband Internet network via a constellation of LEO satellites. http://www.teledesic.com/

159. Rocket Launches With Satellites, Ashes CNN http://cnn.com/2001/TECH/space/09/21/rocket.launch.ap/index.html

160. USGS Flagstaff Planetary Map Index - TOC INDEXES OF MAPS OF THE PLANETS AND satellites 1992. by JL Inge and RM Batson. Jovian satellites Maps of Io; Maps of Europa; Maps of Ganymede; Maps of Callisto. http://wwwflag.wr.usgs.gov/USGSFlag/Space/mapbook/

INDEXES OF MAPS OF THE PLANETS AND SATELLITES by J.L. Inge and R.M. Batson TABLE OF CONTENTS Listing of maps published since 1992 Introduction Listing Information Index headings Map formats Scale factors Map series ... Venus Moon Small-scale lunar maps 1:1,000,000 maps 1:500,000 maps 1:250,000 maps ... Large-scale maps Mars Small scale maps 1:5,000,000 maps 1:5,000,000 geologic maps 1:2,000,000 geologic maps ... Digital maps on CD-ROM Jovian satellites Maps of Io Maps of Europa Maps of Ganymede Maps of Callisto Saturnian satellites Maps of Mimas Maps of Enceladus Maps of Tethys Maps of Dione ... Maps of Iapetus Uranian satellites Maps of Miranda Maps of Ariel Maps of Umbriel Maps of Titania ... Maps of Oberon Neptunian satellites Maps of Triton Appendix I: General list of all maps Appendix II: List of I-maps Appendix III: List of geologic maps ... Appendix VII: Availability of Printed Maps

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