We use cookies to ensure that we give you the best experience on our website. It enables a user to inquire about satellite imagery over any portion of the world by specifying a nominal scene center designated by PATH and ROW numbers. WGS Up-loadable stored-program switching Digital signal processing used to route traffic of varying bandwidths Launches Just one WGS satellite has the same capability as the entire legacy 14-satellite DSCS network. WGS-9, set for liftoff in March 2017, represents the international contribution to the program with funding for the satellite provided by Canada, Denmark, the Netherlands, Luxembourg and New Zealand in exchange for access to bandwidth from the entire global constellation. This year, resiliency is baked into all the conversations, said assistant secretary of Defense for space policy John, The Space Force and the Pentagon have put considerable effort into making proliferating satellite constellations to make them more resilient against attack, but the ground stations and networks that communicate with those satellites pose a backdoor risk through which adversaries could potentially attack space capability, said Chief of Space Operations, The Space Force must transition from delivering behind-the-scenes support to playing a more active role in which space capabilities are continuously tested and contestedand it must do so in as short a time as possible, said Chief of Space Operations Gen. B. The satellite operators come under the control segment. The WGS system is composed of three principal segments: Space Segment (satellites), Control Segment (operators) and Terminal Segment (users). It's like going from dial-up . U.S. officials told Air & Space Forces Magazine the exercise, dubbed Juniper Oak, was notable in both size and scope. The two deployable solar arrays each have five wings that are covered with ultra triple-junction gallium-arsenide solar cells which deliver an end-of-life power of at least 11 Kilowatts. Block II was inaugurated in 2012 with the launch of WGS-4 and features a number of upgrades including a radio frequency bypass capability for optimized services to airborne intelligence, surveillance and reconnaissance platforms (Unmanned Aerial Vehicles) requiring ultra-high bandwidth and data rates. Each WGS satellite is digitally channelized and transponded. As of the latest revision, the WGS 84 datum surface is a pole-flattened ( oblate) spheroid, with major ( transverse) radius a = 6,378,137 m at the equator, and minor ( conjugate) radius b = 6,356,752.314 245 m at the poles (a flattening of 21.384 685 755 km, or 1/298.257 223 563 0.335% in relative terms). Regulation Part 12 rules for commercial item acquisition. Fiscal 2018 procurement funds in the amount of $300,000,000 are being obligated at the time of award. Coverage may vary. The WGS-1 satellite operates over the Pacific region. The next three, WGS satellites 4, 5, and 6, make up Block II. [15], WGS-8 (USA-272) was successfully launched by a Delta IV Medium+ (5,4) launch vehicle on 7 December 2016 at 23:52 UTC from SLC-37B at Cape Canaveral Air Force Station in Florida. SpaceX is developing a low latency, broadband internet system to meet the needs of consumers across the globe. 3 hours 6 hours 12 hours 24 hours. Coverage Maps. The WGS satellites will complement the DSCS III Service Life Enhancement Program (SLEP) and GBS payloads and will offset the eventual decline in DSCS III capability. Canada has also signed on to become a partner.[5]. Boeing successfully launched the WGS-2 into geostationary orbit on the Atlas V in April 2009. There was a continuing need for these users to access the Gapfiller satellites and the two or more DSCS III SLEPs to provide worldwide coverage. Home Ways to Watch Satellite Coverage Map Printable Map Daystar Television is available in over 100 million homes in the United States and 680 million homes around the world. The end users of the communication services provided by the WGS are described by the DoD as the terminal segment. It provides steerable spotbeams that can reach any position within the satellites field of view between 65 degrees north and south latitude. The orbit data is extracted from the following two-line orbital elements, 1 39222U 13041A 23053.33868934 .00000076 00000-0 00000-0 0 9997 2 39222 0.0131 103.0841 0000182 169.9453 225.6390 1.00270828 33911. Background Map denotes coverage for satellite two-way voice and duplex data only. The satellites launched into orbit are controlled through four army wideband satellite operations centres (WSOCs) on the ground, using ground equipment hardware and software developed by Boeing, ITT Industries and Raytheon. The order for long lead items for WGS7 was placed in August 2010. Atlas V is equipped with 4m-diameter payload fairing, two solid rocket motors and a single-engine Centaur upper stage, attached to a single common core booster (CCB) powered by an RD-180 engine. Other improvements involve uniquely shaping the terrestrial footprint of the beams for smaller footprints that are less susceptible to jamming. II. WGS combines a chemical propulsion system in use for the initial climb to Geostationary Orbit with an electrical propulsion system to fulfill stationkeeping tasks and extend the satellites lifetime beyond that of pure liquid-fueled spacecraft. The contract was worth $160.3m and was extendible up to $1.3bn. Its coverage area stretches from the West Coast of the United States to Southeast Asia. Ion thrusters generate thrust by accelerating ions through the use of an electric field and ejecting these ions at extremely high velocity creating thrust force propelling the spacecraft forward. The first three WGS satellites are known as the Block I Group of Satellites that were part of the initial deal with Boeing signed in January 2002. After the launch, the military designated the WGS-1 as USA-195, which entered service in April 2008. The WGS provide near-term continuation and augmentation of the services currently provided by the Defense Satellite Communications System (DSCS) and the Global Broadcast Service (GBS) Ka services currently provided by GBS payloads on UFO satellites. The system will provide capacity ranging from 2.1Gbps to more than 3.6Gbps to tactical users, depending on the mix of ground terminals, data rates and modulation schemes employed. The Gapfiller System supports continuous 24 hour per day wideband satellite services to tactical users and some fixed infrastructure users. The Army relies on Ka and Ku band satellite communications (SATCOM) for beyond line of sight (BLOS) communications between Division, Brigade, Battalion, and Company echelons. Delivers IP-based voice, video, and data networking Set up and point the terminal in 30 minutes or less Ruggedized, packable, lightweight terminal With a simple feed-arm swap, the Viasat MMT operates over commercial Ku-, WGS Ka-, ViaSat-1 and ViaSat-2 Ka-, and commercially available X-band constellations. WGS1 parameters have been measured for the Narrow Coverage Antenna (NCA) and Area Coverage Antenna (ACA) beams. Southwest Asia Coverage: NSS11 - 108E Southeast Asia Coverage: Palapa D - 113E Southeast Asia Coverage: JCSAT 4B - 124E Thailand Coverage: Thaicom 5 - 78.5E Europe & Middle East Latin & South America North America Tri-Americas New Zealand Coverage: Optus D1 - 160E Satellite TV Services in this region include: Sky TV: www.skytv.co.nz WGS will augment DoD communications services currently provided by the Defense Satellite Communications System (DSCS), which provides Super High Frequency (SHF) wideband communications, and by the Ka-band Global Broadcast Service (GBS), which uses direct broadcast satellite technology to provide critical information to U.S. and allied forces. It carries Ka-band and X-band transponders with 8.088 gigahertz of bandwidth offering downlink speeds of up to 11gigabits per second. Oct. 10, 2007 The WGS-2 satellite was positioned over the equator around 60 East longitude (over the Indian Ocean) for use by United States Central Command in Afghanistan, Iraq and other parts of Southwest Asia. The upgraded hardware also will be installed on the planned 10th WGS satellite. After launch, the WGS-1 satellite was given the U.S. military designation USA-195. Each standard WGS satellite offers 4.875 GHz of instantaneous switchable bandwidth corresponding to a capacity of 2.1 to 3.6 Gbps depending on the ground terminals, data rates and modulation profiles that are employed. WGS 8, launched in 2016, marks the first in the Modified Block II satellites, hosting an upgraded digital channelizer which enables a 90% improvement in available bandwidth compared to previous WGS spacecraft. Looking for online definition of WGS or what WGS stands for? Users include the Australian Defence Force and U.S. Army ground mobile terminals, U.S. Navy ships and submarines, national command authorities for the nuclear forces, and various national security/allied national forces. These three projects provide NATO with access to the military segments of four national satellite communications systems: SYRACUSE from France, SICRAL from Italy, Skynet from the United Kingdom and WGS from the United States. Primary function:High-capacity military communications satellite It provides services to the US DoD and Australian Department of Defence. WGS provides two-way X-band and Ka-band communications as well as Ka-band broadcast services to US Armed Forces and other agencies worldwide. May 23, 2013 SatBeams - Satellite Coverage Maps and Charts Homepage. This high-capacity satellite communications system is intended to support the warfighter with newer and far greater capabilities than provided by current systems. Timezone: 51.51N Jan. 19, 2012 Each individual beam is shapeable and can be uniquely tailored to each situation. Operation and usage of the WGS System is divided into three segments the Space Segment with the Satellites, the Control Segment which operates the satellites, and the Terminal Segment which corresponds to user terminals on the ground. The Program Office plan for WGS satellite launch is to integrate them on both Delta and Atlas Evolved Expendable Launch Vehicles (EELVs). The history of U.S. MILSATCOM has been one of aggregation of mission capabilities over time. In addition, the channelizer supports multicast and broadcast services and provides an extremely effective and flexible uplink spectrum monitoring capability for network control. Boeings team of contractors includes Harris Corporation, ITT Industries, Logicon and SAIC. The DoD wideband satellite communications system consists of multiple types of military satellites, control facilities, and user terminals that comprise three distinct segments: (1) the User Terminal Segment, (2) the Space Segment, which consist of three Gapfiller Satellites in geo-synchronous orbit, each providing a two way X-band, a new two way military Ka-band, and broadcast Ka-band services, and (3) the Control Segment. Please make a donation to support Gunter's Space Page. The Option for WGS4 and 5 was exercised in November 2006. A team led by Boeing Integrated Defence Systems was awarded a contract to develop the WGS system in 2001. Fast Smooth. The ground segment is a critical part of the end-to-end science data return, and it includes all the ground-based elements that are used to collect and disseminate information from the satellite to the user (figure 11.1). EN . Chance Saltzman unveiled his "Theory of Success" concept Feb. 22, as the force carves out its military role. In its newest announcement, Space Systems Command said the program maintains an aggressive five-year schedule poised to deliver six months faster than legacy WGS satellites., The Defense Department started placing WGS satellites in orbit in 2007. Two-way Ka- (1GHz) and X-Band (500MHz) communications are supported by the Spacecraft which also provides a capability to convert signals from one to the other with its onboard systems. Satellite coverage spans great distances A satellite can directly connect points separated by 1000's of miles A satellite can broadcast to 1000's of . WGS systems feature digitally channelised transponder satellites that provide communication capacity, connectivity and flexibility to the US military forces. HOME / SATELLITES / Satellite Coverage Maps . The 2001 Defense Appropriations Act, signed on August 9, 2000, limited funding to two satellites. The spacesegment is a constellationof geo-synchronous militarycommunications satellitesthat leverage cost-effectiveproduction methods to deliverhigh throughput Ka- andX-band Services. Device must be registered on the network in order to place S.O.S./911 call. Required power varies between 1,300 and 4,500 Watts achieving a thrust of up to 165 Millinewtons and a specific impulse of 3,500 seconds. Hoping to prod a debate on the Space Force's future, Chief of Space Operations Gen. B. WGS-10 is the latest part of a constellation of highly-capable communications satellites that serve the armed forces of the United States and its allies. The new channelizer makes use of the latest Application Specific Integrated Circuit technology to be more efficient in converting uplinked data to digital signals which can then be moved internal to the satellites ahead of reconversion and downlink. The Wideband Global SATCOM (WGS) system, previously known as the wideband gapfiller satellite system, is a high-capacity communication satellite. The combined wideband satellite communications system consists of space vehicles of multiple types, control terminals and facilities, and user terminals.
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