1. Chinese Space Tracking Fleet Continues Rehearsal Tokyo Feb 20, 2002 - The fleet of four Chinese space tracking vessels continued their rehearsal at sea despite the lengthy wait of the next Shenzhou launch. Report of the exercise activities days, and the tracking vessels were ready to perform space mission tracking tasks. http://www.spacedaily.com/news/china-02k.html

DRAGON SPACE Tracking Fleet Continues Rehearsal one of four ships making up China's fleeting of tracking ships by Wei Long Tokyo - Feb 20, 2002 China's fleet of four space tracking vessels continued their rehearsal for the next Shenzhou launch despite ongoing delays with what will be the third test launch of China's future manned spacecraft. Report of the exercise activities appeared in the People's Liberation Army Daily Feb 10. The Yuanwang fleet (Yuanwang means "Long View") continued to rehearse up until days before the arrival of the Lunar New Year of the Horse a week ago. PLA Daily reported that the fleet successfully completed testings of several domestically developed systems in recent days, and the tracking vessels were ready to perform space mission tracking tasks. In order to meet the requirement of increasing tracking and commanding capabilities at sea, in the past few years the fleet has focused on networking research to support tracking and commanding, navigation, power, and equipment protection. One of the systems that the fleet has developed is the navigation command system network, which is equipped with an advanced electronic ocean map system.

2. Liftoff To Space Exploration: Fundamentals the JTrack 3D java applet Live 2D Java tracking Maps J We even add the space Shuttle(during missions used by our remote scientists to keep up with the mission. http://liftoff.msfc.nasa.gov/toc.asp?s=Tracking

3. Dave Ransom Software Home Pages is the fourteenth International space Station mission. This flight will deliver the Expedition Five Crew and the of 1998, I wrote satellite tracking software for a new NASA radar http://www.dransom.com/

Software and Data from David H. Ransom, Jr. W elcome to the Home Page for STSPLUS and other space/astronomy software as well as information and images of current space shuttle missions. Comments, suggestions, and bug reports are invited! e-mail: David H. Ransom, Jr. This Home Page is operated as a public service in spite of costs which far exceed what I anticipated for a "part time hobby". Donations to help continue this service in 2001 are welcome; my new mailing address is: David H. Ransom, Jr. 1492 Paseo de Oro Pacific Palisades, CA 90272 USA NEW SITE FOR ORBITAL DATA! Thanks to the good offices of Rod Eldridge, my current orbital data (TLEs) are now being mirrored at Iowa State University. All users are requested to use the Iowa State site at Ames, Iowa, to keep the traffic at my personal website within reasonable bounds. Thanks, Rod! GET THE CURRENT US NAVAL OBSERVATORY TIME Official US Time (NIST/USNO +/-0.7 Second) Shortcut Links: FLASH! News and comment by Dave Ransom (Ames, IA) FLASH! News and comment by Dave Ransom (Atlanta, GA) Current TLE Data from US Space Command by Dave Ransom (Ames, IA) Current TLE Data from US Space Command by Dave Ransom (Atlanta, GA) ... ALM2TLE by Geoffrey Hitchcox, Program (ZIP file) International Space Station It is traditional to make a final fly-around of the International Space Station (ISS) when a space shuttle departs. This image shows the current configuration, taken on 18 March 2001 by Discovery. Clearly visible are the P6 Solar Arrays, 240 feet wide. (Courtesy NASA)

4. NASA - Space Science - Missions U.S., Soviet Union/Russia, and other countries since the beginning of the space age. Multimission Programs Near-Earth object detection, tracking, and characterization, including http://spacescience.nasa.gov/missions

Missions Under Study In Development Operating ... Curator: Craig Tupper Space Science Missions We have quite a few missions, some well-known and others not so well known. Many involve cooperation with international partners or other U.S. agencies. The links below will take you directly to the mission's home page; for full names and brief descriptions of these missions, click on the column headings (i.e., Under study In development Operating , or Past missions ). We also have a page with some very preliminary mission concepts Under study ANITA Constellation-X DUO EUSO GEC Geospace IBEX ... Past missions Ended after 1989: ASCA Astro-1 Astro-2 BBXRT ... SNOE Spartan Starshine TERRIERS TSS-1 TSS-1R ... Yohkoh Older missions: JPL missions NSSDC database You may also be interested in a comprehensive history of Space Science from the 1940s to present, as well as an excellent reference to the various deep space spacecraft that have been launched by the U.S., Soviet Union/Russia, and other countries since the beginning of the space age. Multi-Mission Programs The following programs include multiple missions, many of which are linked above. You can see brief descriptions of these programs, along with links to them

5. Help Keep NASA Cams Running! Real time images from live NASA web cams and space shuttle mission displays. Includes Kennedy space Center images and links to live shuttle tracking and airto-ground audio/video. http://www.ambitweb.com/nasacams/nasacams.html

Updated: document.write(todaysDate); We Have To Limit Access To Ambit's NASA Cams! Why? Ambit's most popular page now costs too much to afford on my fixed income. I now have problems paying for the "bandwidth" of each month's bill. I use what I know about computers to keep costs as affordable as possible. Unfortunately, "affordability" has reached its limits. You may have noticed that, unlike most other Web sites, Ambit has very few ads (most pages have no ads at all.) Those are the handful of ads and banners that might interest Ambit's visitors. Most ads do not add anything to the Web experience, they all make VERY small amounts of money (if any) and the broker companies that furnish the ads are so unstable (frequent changes or even bankruptcies) that they are more hassle than they are worth. I hope the fact that Ambit has a minimum number of ads makes it more of a "place" you'll want to come back to. After paying for NASA Cams on my own for over six years, it became obvious that the time had come to ask for help if Ambit Was to stay open. View NASA Cams By Making A Donation!

6. Spaceflight Now | Tracking Station | Worldwide Launch Schedule US STORE UK WORLDWIDE STORE space station mission DVD Expedition 6 crew membersKen Bowersox and Don Pettit tell the story of their mission to the http://www.spaceflightnow.com/tracking/

June 10, 2004 - A regularly updated listing of planned missions from spaceports around the globe. Dates and times are given in Greenwich Mean Time. "NET" stands for no earlier than. Recent updates appear in red type . Please send any corrections, additions or updates by e-mail to: justin@spaceflightnow.com Latest changes: Delta/GPS 2R-12 delayed; Adding date for Sea Launch/Telstar 8; Adding Minotaur/XSS-11 Adding date for Ariane/Anik F2 Delta/Aura delayed; Date set for Delta/GPS 2R-12; Adding date for Zenit/Kosmos Delta/GPS 2R-12 delayed; Delta/Aura delayed Adding new date for Delta/Aura; Delta/GPS 2R-12 in question Delta/GPS 2R-12 delayed again June 15 or 16 Launch window: approx. 2325-2350 GMT (7:25-7:50 p.m. EDT) Launch site: SLC-17B, Cape Canaveral Air Force Station, Florida The Boeing Delta 2 rocket will launch the NAVSTAR Global Positioning System 2R-12 military navigation satellite. The launch will be run by the U.S. Air Force. The rocket will fly in the 7925 vehicle configuration. Moved up from July 20 to accommodate MESSENGER launch in late-July. Delayed from June 4 (local time) to replace first stage hydraulic pump. Delayed from June 11 to complete review of wiring harness issue. Delayed from June 13 and 14. See our Mission Status Center launch coverage.

7. Spaceflight Now | Tracking Station | 2004 Launch Log EST) Launch site ELA3, Kourou, French Guiana Arianespace Ariane 5G+ rocket launchedthe European space Agency s Rosetta spacecraft on a mission to rendezvous http://www.spaceflightnow.com/tracking/launchlog.html

June 10, 2004 - This listing shows the completed space launches from spaceports around the globe in 2004. Dates and times are given in Greenwich Mean Time. Please send any corrections, additions or updates by e-mail to: justin@spaceflightnow.com June 10 Launch time: 0128 GMT (9:28 p.m. EDT on 9th) Launch site: Baikonur Cosmodrome, Kazakhstan The Ukrainian Zenit 2 rocket launched a classified Kosmos satellite payload into orbit for the Russian military. The craft is thought to be an electronic reconnaissance satellite. Launch delayed from mid-February, March 17, March 31, April 25 and April 26. [June 10] May 28 Launch time: 0600 GMT (2:00 a.m. EDT) Launch site: Baikonur Cosmodrome, Kazakhstan A Tsiklon 2 booster launched a classified satellite, named Kosmos 2407, for the Russian military. The spacecraft is believed to be an electronic intelligence satellite for the Russian Navy. [May 28] May 25 Launch time: 1234 GMT (8:34 a.m. EDT) Launch site: Baikonur Cosmodrome, Kazakhstan A Russian government Soyuz rocket launched the 14th Progress cargo delivery ship to the International Space Station. Delayed from Jan. 30 as ripple effect from earlier Progress launch slip. Delayed from May 19. See our launch coverage . [May 25] May 20 Launch time: 1747 GMT (1:47 p.m. EDT)

8. National Park Service: Man In Space (Mission Control Centers) various ongoing NASA projects including the tracking of the The first version ofthe space Flight Operations This mission control center was in a single room http://www.cr.nps.gov/history/online_books/butowsky4/space22.htm

Cover Page MENU Contents Phase I: Introductory Essay Phase II: ... Spacecraft Man in Space A National Historic Landmark Theme Study Mission Control Centers Interior View of the Network Operations Control Center, 1981. (Courtesy of NASA-JPL, JPL Public Affairs Office) Space Flight Operations Facility Name: Space Flight Operations Facility Location: Jet Propulsion Laboratory, Pasadena, California Owner: National Aeronautics and Space Administration (NASA) Condition: Excellent, altered, original site Builder/Architect: NASA Dates: 1963-Present DESCRIPTION The Space Flight Operations Facility (SFOF) is at the Jet Propulsion Laboratory (JPL) in Pasadena, California. The SFOF is where spacecraft tracking and scientific data are received and processed from JPL's Deep Space Network. The SFOF was constructed in 1963 and is composed of three floors and a basement. The SFOF is a square building with a standby powerhouse extending from the basement on the west side. The entire structure encloses 122,074 square feet. All parts of the building, except for parts of the basement and the standby power house, are air-conditioned to precise tolerances. The exterior of the structure has a rock and concrete face. At the heart of the SFOF is the Network Operations Control Center which provides a centralized control point for NASA's Deep Space Network. The Network Operations Control Center has two separate functional elements: Network Operations Control and Network Data Processing.

9. National Park Service: Man In Space (Tracking Stations) NASA to solve the technical problems of tracking deep space probes its role and contributionto the continuing mission of NASA in the exploration of space. http://www.cr.nps.gov/history/online_books/butowsky4/space21.htm

Cover Page MENU Contents Phase I: Introductory Essay Phase II: ... Spacecraft Man in Space A National Historic Landmark Theme Study Tracking Stations Aerial View of the Pioneer Deep Space Station and support buildings, pre-1969. (Courtesy of NASA-JPL, JPL Facilities Office) Pioneer Deep Space Station Name: Pioneer Deep Space Station Location: Goldstone Deep Space Communications Complex, Fort Irwin, California Owner: National Aeronautics and Space Administration (NASA) Condition: Excellent, unaltered, original site Builder/Architect: U.S. Army Dates: DESCRIPTION The Pioneer Station (DSS 11) was the first deep space station to be constructed in the NASA Deep Space Network. It was built in 1958 and is at the Goldstone Deep Space Communications Complex near the northeast tip of Goldstone Dry Lake approximately 45 miles northwest of Barstow, California. The Pioneer Station antenna is a 26-meter large-diameter, polar mounted, steerable parabolic dish. The parabolic dish has a surface tolerance of approximately .125 inch and beamwidth characteristics (0.1 degree) that permit efficient use of frequencies from 1 to 3 GHz. The antenna structure was designed for closed loop steering control. The 26-meter dish surface was constructed of punched aluminum panels bolted to an open steel framework mounted atop a 62 foot high tower-like polar mount steering mechanism. [ At the present time the Pioneer Station antenna is mothballed and in a standby status. Over the years it has become technologically obsolete and other NASA tracking stations now carry the burden of communicating with the various active space probes.

10. Sino-Kiribati Diplomatic Dispute Won't Hurt China's Space Mission Beijing (Xinhua) Dec 02, 2003 The severing of diplomatic relations between China and Kiribati, where there is a Chinese aerospace tracking station, will not affect the country's space missions http://www.spacedaily.com/news/china-03zzd.html

DRAGON SPACE Sino-Kiribati Diplomatic Dispute Won't Hurt China's Space Mission The Kiribati tracking station Beijing (Xinhua) Dec 02, 2003 The severing of diplomatic relations between China and Kiribati, where there is a Chinese aerospace tracking station, will not affect the country's space missions or the launch of the Shenzhou VI, an expert said. On Saturday the Chinese Government cut ties with Kiribati, a tiny island nation in the South Pacific, because it established so-called "diplomatic relations" with Taiwan. According to the Beijing Times, Liu Dengyue, a researcher with the China Aerospace Science and Technology Corp, said the tracking station is not of crucial importance. If the station on Kiribati is cancelled China could find another place in the region to build a new one, Liu said. China could also send monitoring ships to the region if a new station cannot be established, he added. Earlier on Saturday Chinese Ambassador to Kiribati Ma Shuxue made solemn representations on the Kiribati Government's establishment of so-called "diplomatic relations" with Taiwan. According to sources with the Foreign Ministry, Ma pointed out that the Kiribati Government, regardless of the friendly China-Kiribati relations and oppositions from various sides in Kiribati, obstinately acted to make "two Chinas."

11. Chronology Of Manned Space Missions This mission deployed the third tracking and data relay satellite into orbit. STS30(USA), Atlantis, May 4, 1989, Deployed the radar mapping space probe Magellan http://www.windows.ucar.edu/tour/link=/space_missions/manned_table.html

A History of Manned Space Missions Mission (Country) Craft Launch Date Crew Mission Highlights Vostok-1 (USSR) Kedr (Cedar) April 12, 1961 Gagarin Cosmonaut Yuri Garagin became the first human in space. Mercury-3 (USA) Freedom 7 May 5, 1961 Shepard Alan Shepard became the first American in space during a fifteen minute sub-orbital flight Mercury-4 (USA) Liberty Bell-7 July 21, 1961 Grissom The second US sub-orbital flight, reaching an altitude of 126 miles Vostok-2 (USSR) Orel (Eagle) August 6, 1961 Titov Titov was the first to spend an entire day in space. Mercury-6 (USA) Friendship 7 February 20,1962 Glenn The first US manned orbital flight at an orbit 100-162 miles from the Earth. Mercury-7 (USA) Aurora 7 May 24, 1962 Carpenter The second US manned orbital flight which orbited the Earth three times. Vostok-3 (USSR) Sokol (Falcon) August 11, 1962 Nikolayev First four-day flight and first "group" flight with Vostok-4. Vostok-4 (USSR) Berkut (Golden Eagle) August 12, 1962 Popovich The other half of the first "group" flight. Vostok-4 came within five miles of Vostok-3. Mercury-8 (USA) Sigma 7 October 3, 1962

12. Upgraded Chinese Space Tracking Ships In Full Rehearsal For New Mission The newly serviced fleet of Chinese space tracking vessels are ready for new assignment,possibly with tracking of the Shenzhou3 unmanned mission as their http://www.spacedaily.com/news/china-01zzd.html

DRAGON SPACE Chinese Tracking Ships In Full Rehearsal For Shenzhou-3 Launch YW-1 left port for system testing in July after completion of servicing in its home port in Shanghai. (Photo: Wen Wei Po) by Wei Long Beijing - Dec 27, 2001 Science and Technology Daily reported last Monday (17th) that the entire fleet of refurbished and upgraded Yuanwang (YW, Yuanwang means "Long View") tracking vessels gathered at an unspecified location to carry out a full scale launch tracking rehearsal in mid-December. The report, however, did not provide any details and the duration of the exercise. Then on Friday (21st) Xinhua News Agency reported that the fleet successfully completed the 10-day "comprehensive simulation" in the East China Sea and returned home in the afternoon. According to Xinhua the rehearsal was "a comprehensive assessment of executing the task of maritime tracking of Shenzhou." The full scale rehearsal of the entire tracking fleet probably signals another milestone in the launch preparation of the third unmanned test flight of Shenzhou ("Magic Vessel" or "Divine Vessel"), the SZ-3 mission. Chinese space officials have not acknowledged any preparations to launch SZ-3. But various reports in recent months indicate that SZ-3 prelaunch activities are underway. For example, the Chinese Academy of Launch Vehicle Technology (CALT) said in October that the CZ-2F launcher which would launch SZ-3 had received certification by authorities in Beijing.

13. Tracking Satellite Home Page STS107 Crew Poster. STS-107 mission Poster. Odigo Messaging SMS ICQ Messaging. ISSFanClub News The Gate for your space Information Real Time Satellite tracking. http://www.ik1sld.org/index2.htm

Visit our Portal ISS Exp. Crew 5 sent the best regards for Members of ISS FanClub Download your new Wallpaper ISS 7th Crew Apr. 26, 2003 - 03:54 UTC 1st Crew Info 1st Crew Photos 2nd Crew Info 2nd Crew Photos ... 7th Crew Photos Soyuz TM-34 Returned back home Nov. 10, 2002 - 00:04 UTC HAM Radio contact by Frank De Winne Odissea Mission Timeline Launch: Oct. 30, 2002 - 03:11 UTC Docking: Nov. 1, 2002 - 05:00 UTC Undocking: Nov. 9, 2002 - 20:44 UTC Landing: Nov. 10, 2002 - 00:04 UTC Taxi Crew # 1 (Musabayev-Baturin-Tito) Taxi Crew # 2 (Afanasiev-Haignere-Kozeev) Taxi Crew # 3 (Gidzenko-Vittori-Shuttleworth) Taxi Crew # 4 (Zalyotin-De Winne-Lonchakov) ISS - PCSat - Starshine IGate Europe ACTIVE Phase-3D Launch Photo Gallery ICQ Software for Palm v. 2.1beta Keplers for Palm Devices ? Soyuz TMA-1 Crew safe after a long wait (Image from Previous Soyuz Landing) May 4, 2003 - 02:07 UTC

14. Communication And Tracking Analysis An important element of planning a space mission is calculating of a spacecraftand catapult it further into space. Satellite tracking and Control http://www.jaxa.jp/missions/projects/sas/cm_tr/index_e.html

JAXA TopPage Missions Projects Space Science Research Usuda Deep Space Center In space missions, we have to optimize the trajectory of rockets as well as the orbits of satellites and spacecraft. The development of the trajectory plan is an essential area of investigation for the Institute of Space and Astronautical Science. - Orbital Engineering In order to send satellites and orbiters on target, we have to determine exactly when and how to launch the rockets that take them into space. When assessing orbits, we have to take many different elements into account, including the gravitational pull of the Earth, the Sun, and the other planets. Orbital engineering is the field that handles this work. - Mission Analysis An important element of planning a space mission is calculating the most efficient flight path, which uses the least amount of fuel possible to reach the Moon, an asteroid, or a planet such as Venus or Jupiter. To design this path, and to place the spacecraft into the right orbit on arrival at its destination, we have to calculate the movement of planets. Sometimes we use the method called "swing-by," which uses the gravity of a planet to change the direction of a spacecraft and catapult it further into space. This kind of planning requires an enormous amount of analysis and computation. - Satellite Tracking and Control Sagamihara Operation Center (SOC) at the Sagamihara Campus is in charge of tracking and controlling scientific satellites. SOC operates as a part of the Space Tracking and Data Network (STDN) of JAXA. It sends commands to the satellites, and receives data from them. Commands sent from SOC are actually sent to outer space from the Usuda Deep Space Center (Usuda-cho, Nagano Prefecture) or the Uchinoura Space Center (USC) (Uchinoura, Kagoshima Prefecture). At the Usuda Deep Space Center, the antenna is 64 meters in diameter, and mainly communicates with probes that are headed for the Moon and for other planets. The antenna at USC mainly is used to communicate with satellites orbiting Earth.

15. MSNBC - Today, it is providing the 2006 Starlight mission with two small deepspace transpondersfor tracking and controlling data transmissions between the spacecraft http://www.msnbc.msn.com/id/4873989/

MSN Home My MSN Hotmail Shopping ... Money document.write('') Web Search: logoImg("http://sc.msn.com"); MSNBC News Alerts Newsletters Help ... MSNBC Shopping Search MSNBC: Advanced Search File not found. Our Web servers cannot find the page or file you asked for. The link you followed may be broken or expired. Go to our MSNBC home page , the NBC Sports home page , or try searching our Archives Cover News Business ... Anti-Spam Policy

16. Last Frontier State Launches First Orbital Mission Last Frontier State Launches First Orbital mission By Jim quartet of research satellitesinto space for NASA the terrorist attacks, a balky tracking radar and http://www.space.com/missionlaunches/athena_launch_010929.html

SEARCH: advertisement Last Frontier State Launches First Orbital Mission By Jim Banke Senior Producer, Cape Canaveral Bureau posted: 01:30 am ET 30 September 2001 CAPE CANAVERAL, Fla. With whales swimming, wild horses grazing and buffalo roaming nearby, the Last Frontier State hosted its first orbital shot into the final frontier on Saturday as an Athena 1 rocket lofted a quartet of research satellites into space for NASA and the Air Force. Delayed two weeks because of the terrorist attacks, a balky tracking radar and a massive solar flare that could have interfered with the rocket's guidance system, the Lockheed Martin-built rocket soared from the Kodiak Launch Complex at 10:40 p.m. EDT Saturday (0240 GMT Sunday). During the next two hours or so the booster successfully reached polar orbit and deployed all four of the NASA and Air Force student research and technology satellites known collectively as Kodiak Star and individually as PICOSat, Sapphire, PCSat and Starshine 3 riding atop the Athena 1. "The rocket's performed just great," said Chuck Dovale, NASA's launch manager from the Kennedy Space Center. "It was really a pleasure to see the liftoff. It jumped off the pad and went down the nominal track, just right on the money. Everyone cheered in the launch control center."

17. Other Military Space Program Guides Home Page supports the tracking Resources Catalog (TRCat) online reference guideto provide a global directory of ground stations. space mission Acronym List http://www.fas.org/spp/military/program/other.htm

FAS Space Military Program ... Join FAS Other Military Space Program Guides National Security Space Road Map Office of the National Security Space Architect (NSSA) March/July 1999 This Road Map is one component of a larger master plan envisioned by the NSS Architect (NSSA). The NSS Master Plan documents the NSS Systems Architecture which is both the NSS Road Map and the documented results of multiple Architecture Development Team efforts. Department of Defense Space Program - An Executive Overview for FY 1998 - 2003 March 1997 - identifies the cross-cutting trends and major themes that underlie DoD activites and initiatives and summarizes featured space programs to illustrate their roles in longer-term planning activities. ARMY SPACE REFERENCE TEXT Describes the space segments, the energy sources used, payload types, and tracking networks for satellite control, as well as the capabilities and limits of satellite systems. Brief historical overview of the Space and Missile Systems Center and its predecessors, covering the evolution of the mission and the organizational structure, the history of base facilities, and the history of the principal space and missile programs. The 6555th: Missile and Space Launches through 1970 6555th Aerospace Test Wing history over the first two decades of its existence the golden age of Air Force missile and space launch vehicle flight tests at Cape Canaveral.

18. ESA Portal - Stardust Tests New ESA Deep-space Ground Station In Australia to transmit and receive data from other space missions sent to is a NASA Jet PropulsionLaboratory mission, was selected for the tracking tests as it http://www.esa.int/export/esaCP/ESA7G3OED2D_index_0.html

ESA Life in Space Expanding Frontiers Improving Daily Life ... Benefits for Europe Multimedia ESA Multimedia gallery National galleries Media Centre Press Releases Information Notes ESA Television ESA and the EU Cooperation Services Calendar Publications Frequently asked questions ESA-sponsored Conferences ... Subscribe Search All ESA Home Advanced Search New ESA antenna Stardust tests new ESA deep-space ground station in Australia 21 June 2002 The spacecraft Stardust, which is on its way to meet the Comet Wild 2 in January 2004, last week helped ESA to carry out final testing of the Agency’s first deep-space ground station, situated just 140 km north of Perth in New Norcia, Australia. ESA’s new 35-metre telemetry, tracking and command antenna has a pointing accuracy of 0.01 degrees and will be a vital link in ESA’s Rosetta mission to the comet Wirtanen. This is one of the most ambitious scientific missions ever to be launched and is scheduled to take place early in 2003. The 630-tonne antenna will be the main communications link between Rosetta and Mission Control at ESA’s European Space Operations Centre (ESOC) in Germany. It will also be used to transmit and receive data from other space missions sent to explore the Universe beyond the Moon, such as ESA’s Mars Express, also scheduled for launch in 2003. Stardust, which is a NASA Jet Propulsion Laboratory mission, was selected for the tracking tests as it is on an interplanetary trajectory currently more than 300 million km from the Earth. As it passed over Australia on 8 June, at a maximum elevation of over 70 degrees, the New Norcia ground station successfully tracked the spacecraft and received its signals.

19. FAQ Goddard space Flight Center (GSFC) offers an to provide customers with mission planning,flight data processing, telemetry, commanding, tracking, range, and http://ccs.honeywell-tsi.com/cco/faq.htm

GSFC Mission Services Project GSFC Customer Commitment FAQ Home [ FAQ ] Resources Services Frequently Asked Questions What are mission services and data services? Who uses GSFC mission and data services? When do I need mission and data services? How do I get mission and data services? What are mission services and data services? Mission and data services entail the planning, procurement, provision, and management of functions critical to mission success. Goddard Space Flight Center (GSFC) offers an extensive set of mission and data services that span the entire duration of a mission, from the earliest stages of project formulation to the end of mission life. Experienced GSFC and contractor staff use proven processes and systems to provide customers with mission planning, flight operations, flight dynamics, science data processing, telemetry, commanding, tracking, range, and various additional services such as anomaly resolution and training. Throughout the mission life cycle, our mission and data services operate in concert to provide a comprehensive array of mission tools. Our service offerings are flexible—customers can take advantage of individual or multiple services at any stage in a program. For example, in the initial phases of a mission, GSFC staff can provide assistance in determining requirements, producing trade or cost studies, and exploring available options to meet mission goals. Throughout the development stage, we offer project management assistance and can ensure system readiness through testing and simulations. During operations, GSFC can supply complete flight operations and flight dynamics services including scheduling, navigation, and spacecraft tracking, command, and control. GSFC can process and store customer data, and even produce data products.

20. Ocean Surface Topography From Space-Missions Positioning System Demonstration Receiver (GPSDR) The space segment consists of a TOPEX/Poseidonwas the first mission to use GPS for tracking, the results http://sealevel.jpl.nasa.gov/mission/who-spacecraft.html

@import url( "../main.css" ); + View the NASA Portal OVERVIEW SCIENCE TECHNOLOGY ... Who's Who Navigation: Tracking the Spacecraft A spacecraft can be tracked in a variety of ways, and in fact TOPEX/Poseidon uses three different systems simultaneously for tracking. DORIS Onboard the spacecraft is a system called DORIS, for Doppler Orbitography and Radiopositioning Integrated by Satellite (shown here.) Built by the French, the complete DORIS system includes the receiver on the spacecraft and a worldwide network of Doppler tracking stations. This system uses microwave energy to locate and pinpoint the position of spacecraft such as TOPEX/Poseidon by measuring the Doppler frequency shift in the microwave signals as the Earth and the spacecraft move relative to one another. (If this sounds like the way radar systems work...it is.) The DORIS system is accurate to within ±0.3 mm/s radial velocity. LRA Another system on the spacecraft is the NASA Laser Retro reflector Array, or LRA (shown here.) Ground-based laser tracking stations reflect laser beams off the retro reflector array and measure the time it takes the signals to return to their places of origin. This allows the ground stations to plot precisely where the satellite has been, within ±2 cm. GPSDR There is also an experimental system onboard. The Global Positioning System Demonstration Receiver (GPSDR) was included to test the accuracy of tracking using the U.S. Defense Department's Global Positioning System constellation of satellites. The GPS consists of three components: the space segment, the control segment, and the user segment.

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