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TacSat-3
TacSat-3 is the second in a series of U.S. military experimental technology and communication satellites. It was assembled in an Air Force Research Laboratory (AFRL) Space Vehicles Directorate facility at Kirtland Air Force Base, New Mexico. The TacSat satellites are all designed to demonstrate the ability to provide real-time data collected from space to combatant commanders in the field. TacSat-3 includes three distinct payloads: * the Advanced Responsive Tactically Effective Military Imaging Spectrometer (ARTEMIS) hyperspectral imager, * the Ocean Data Telemetry Microsatellite Link and * the Space Avionics Experiment. Design TacSat-3 uses a standard satellite bus developed and provided by ATK. The payload consists of a two mirror Ritchey–Chrétien telescope plus correction optics, with a focus device incorporated in the secondary mirror unit, and with a slit Offner spectrometer. The spectrometer uses the ARTEMIS hyperspectral imaging sensor (HSI), which is a single ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tacsat-3 080717-F-2907C-105
TacSat-3 is the second in a series of U.S. military experimental technology and communication satellites. It was assembled in an Air Force Research Laboratory (AFRL) Space Vehicles Directorate facility at Kirtland Air Force Base, New Mexico. The TacSat satellites are all designed to demonstrate the ability to provide real-time data collected from space to combatant commanders in the field. TacSat-3 includes three distinct payloads: * the Advanced Responsive Tactically Effective Military Imaging Spectrometer (ARTEMIS) hyperspectral imager, * the Ocean Data Telemetry Microsatellite Link and * the Space Avionics Experiment. Design TacSat-3 uses a standard satellite bus developed and provided by ATK. The payload consists of a two mirror Ritchey–Chrétien telescope plus correction optics, with a focus device incorporated in the secondary mirror unit, and with a slit Offner spectrometer. The spectrometer uses the ARTEMIS hyperspectral imaging sensor (HSI), which is a singl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tactical Satellite Program
During the second half of 2002, the Naval Research Laboratory studied the tactical application of space assets. Relatively new technologies and processes in the areas of microsatellites, affordable and quick-response launch vehicles, and the classified SIPRNet (Secret Internet Protocol Router Network) made tactical use of space assets possible in the relatively near term. The DoD's Office of Force Transformation (OFT) agreed with the core findings of the study and decided to start an Operationally Responsive Space (ORS) Initiative consisting of a series of experiments. TacSat-1 is the first experiment in this OFT initiative. The TacSat-1 experiment received go-ahead on 7 May 2003. The TacSat series of experimental spacecraft are designed to allow military commanders on a battlefield to request and obtain imagery and other data from a satellite as it passes overhead. Collected data will be delivered to field commanders in minutes rather than hours or days. All TacSats have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Force Research Laboratory
The Air Force Research Laboratory (AFRL) is a scientific research organization operated by the United States Air Force Materiel Command dedicated to leading the discovery, development, and integration of aerospace warfighting technologies, planning and executing the Air Force science and technology program, and providing warfighting capabilities to United States air, space, and cyberspace forces. It controls the entire Air Force science and technology research budget which was $2.4 billion in 2006. The Laboratory was formed at Wright-Patterson Air Force Base near Dayton, Ohio, on 31 October 1997 as a consolidation of four Air Force laboratory facilities (Wright, Phillips, Rome, and Armstrong) and the Air Force Office of Scientific Research under a unified command. The Laboratory is composed of eight technical directorates, one wing, and the Office of Scientific Research. Each technical directorate emphasizes a particular area of research within the AFRL mission which it s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operationally Responsive Space Office
The Operationally Responsive Space Office (ORS Office) is a joint initiative of several agencies within the United States Department of Defense (DoD). The "stand up" of the office took place 21 May 2007 at Kirtland Air Force Base. The first director of the ORS Office was Col. Kevin McLaughlin, who was also dual-hatted as commander of the Space Development and Test Wing located at Kirtland. The ORS Office focuses on providing quick-response tactical space-based capabilities to the warfighter utilizing smaller satellites, such as the Tactical Satellite Program and smaller launch vehicles. Organizations that have been involved in ORS activities include the United States Space Force, United States Army, the United States Navy, DARPA, the National Reconnaissance Office, the Missile Defense Agency and NASA. Leadership Col. John Anttonen took over as Director of the ORS Office in February 2013. Previous directors Peter Wegner was director of ORS from May 2008. History The Joint ORS Of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TacSat-2
TacSat-2 is the first in a series of U.S. military experimental technology and communication satellites.TacSat-2 (also known as JWS-D1 ((Joint Warfighting Space-Demonstrator 1) or RoadRunner) was an experimental satellite built by the USAF's Air Force Research Laboratory with an operational life expected to be not more than one year as part of the "Advanced Concept Technology Demonstration" program. Purpose The TacSat series of experimental spacecraft are designed to allow military commanders on a battlefield to request and obtain imagery and other data from a satellite as it passes overhead. Collected data will be delivered to field commanders in minutes rather than hours or days. The sensor on TacSat-2 could collect color images sharp enough to distinguish ground objects as small as 1 meter in diameter. Systems Satellites in the TacSat series were planned to use commercial or available launchers, and largely off-the-shelf components, in order to reduce costs. Satellite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minotaur (rocket Family)
The Minotaur is a family of United States solid fuel launch vehicles derived from converted Minuteman and Peacekeeper intercontinental ballistic missiles (ICBM). They are built by Northrop Grumman via contract with the Air Force Space and Missile Systems Center's Space Development and Test Directorate (SMC/SD) as part of the Air Force's Rocket Systems Launch Program which converts retired Intercontinental Ballistic Missiles into space and test launch systems for U.S. government agencies. Three variants of the Minotaur are currently in service. The Minotaur I is an orbital launch system used to launch small satellites into low Earth orbit (LEO). The Minotaur II is a target launch vehicle (TLV), also known as Chimera, used for suborbital flights, often as a target for tracking and anti-ballistic missile tests. The Minotaur IV is a more capable LEO launch system. The Minotaur V is designed to reach higher orbits, including geostationary transfer orbit (GTO) and trans-lunar t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TacSat-4
TacSat-4 is the third in a series of U.S. military experimental technology and communication satellites. The United States Naval Research Laboratory (NRL) is the program manager. The Office of Naval Research (ONR) sponsored the development of the payload and funded the first year of operations. The Office of the Director of Defense Research and Engineering (DDR&E) funded the standardized spacecraft bus and the Operationally Responsive Space Office (ORS) funded the launch that will be performed by the Air Force's Space and Missile Systems Center (SMC). The spacecraft was completed by the end of 2009, and was launched on 27 September 2011, at 14:49:00 UTC, on a Minotaur IV launch vehicle into a highly elliptical orbit (HEO). Mission TacSat-4 is equipped with a antenna operating 10 Ultra High Frequency (UHF) channels that can be used for any combination of communications, data ex-filtration or Blue Force Tracking (BFT). TacSat-4 will fly the highly elliptical, 4-hour, orbit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minotaur I
The Minotaur I, or just Minotaur is an American expendable launch system derived from the Minuteman II missile. It is used to launch small satellites for the US Government, and is a member of the Minotaur family of rockets produced by Orbital Sciences Corporation (now Northrop Grumman). Vehicle The Minotaur I is the follow-on to the Orbital Sciences' Taurus (later re-named the "Minotaur-C") launch vehicle, combining the original Taurus's booster stage with a second stage from a Minuteman missile. Minotaur I rockets consist of the M55A1 first stage and SR19 second stage of a decommissioned Minuteman missile. The Orion 50XL and Orion 38, from the Pegasus rocket, are used as third and fourth stages. A HAPS (Hydrazine Auxiliary Propulsion System) upper stage can also be flown if greater precision is needed, or the rocket needs to be able to manoeuvre to deploy multiple payloads. It can place up to of payload into a low Earth orbit at 28.5 degrees of inclination. The Minotaur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mid-Atlantic Regional Spaceport
The Mid-Atlantic Regional Spaceport (MARS) is a commercial space launch facility located at the southern tip of NASA's Wallops Flight Facility on Wallops Island in Virginia, just east of the Delmarva Peninsula and south of Chincoteague, Virginia, United States. It is owned and operated by the Virginia Commercial Space Flight Authority. Background The Virginia General Assembly created the political subdivision Virginia Commercial Space Flight Authority (VCSFA), also known as Virginia Space, in 1995 to promote the development of the commercial space flight industry, economic development, aerospace research, and Science, Technology, Engineering, and Math (STEM) education throughout the Commonwealth. This initiative was done from the recommendations of the Batten College at Old Dominion University, with Dr. Billie Reed, a longtime professor at the University, installed as its Executive Director. In 1997, Virginia Space entered into a Reimbursable Space Act Agreement with NASA, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technology
Technology is the application of knowledge to reach practical goals in a specifiable and reproducible way. The word ''technology'' may also mean the product of such an endeavor. The use of technology is widely prevalent in medicine, science, industry, communication, transportation, and daily life. Technologies include physical objects like utensils or machines and intangible tools such as software. Many technological advancements have led to societal changes. The earliest known technology is the stone tool, used in the prehistoric era, followed by fire use, which contributed to the growth of the human brain and the development of language in the Ice Age. The invention of the wheel in the Bronze Age enabled wider travel and the creation of more complex machines. Recent technological developments, including the printing press, the telephone, and the Internet have lowered communication barriers and ushered in the knowledge economy. While technology contributes to econom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focus (optics)
In geometrical optics, a focus, also called an image point, is a point where light rays originating from a point on the object converge. Although the focus is conceptually a point, physically the focus has a spatial extent, called the blur circle. This non-ideal focusing may be caused by aberrations of the imaging optics. In the absence of significant aberrations, the smallest possible blur circle is the Airy disc, which is caused by diffraction from the optical system's aperture. Aberrations tend to worsen as the aperture diameter increases, while the Airy circle is smallest for large apertures. An image, or image point or region, is in focus if light from object points is converged almost as much as possible in the image, and out of focus if light is not well converged. The border between these is sometimes defined using a "circle of confusion" criterion. A principal focus or focal point is a special focus: * For a lens, or a spherical or parabolic mirror, it is a point ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gigabit
The bit is the most basic unit of information in computing and digital communications. The name is a portmanteau of binary digit. The bit represents a logical state with one of two possible values. These values are most commonly represented as either , but other representations such as ''true''/''false'', ''yes''/''no'', ''on''/''off'', or ''+''/''−'' are also commonly used. The relation between these values and the physical states of the underlying storage or device is a matter of convention, and different assignments may be used even within the same device or program. It may be physically implemented with a two-state device. The symbol for the binary digit is either "bit" per recommendation by the IEC 80000-13:2008 standard, or the lowercase character "b", as recommended by the IEEE 1541-2002 standard. A contiguous group of binary digits is commonly called a ''bit string'', a bit vector, or a single-dimensional (or multi-dimensional) ''bit array''. A group of eight b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
