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Ka Band
The Ka band (pronounced as either "kay-ay band" or "ka band") is a portion of the microwave part of the electromagnetic spectrum defined as frequencies in the range 26.5–40 gigahertz (GHz), i.e. wavelengths from slightly over one centimeter down to 7.5 millimeters. The band is called Ka, short for "K-above" because it is the upper part of the original NATO K band, which was split into three bands because of the presence of the atmospheric water vapor resonance peak at 22.24 GHz (1.35 cm), which made the center unusable for long range transmission. The 30/20 GHz band is used in communications satellite uplinks in either the 27.5 GHz and 31 GHz bands, and high-resolution, close-range targeting radars aboard military airplanes. Some frequencies in this radio band are used for vehicle speed detection by law enforcement. The Kepler Mission used this frequency range to downlink the scientific data collected by the space telescope. The designation "Ka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hertz
The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose expression in terms of SI base units is s−1, meaning that one hertz is the reciprocal of one second. It is named after Heinrich Rudolf Hertz (1857–1894), the first person to provide conclusive proof of the existence of electromagnetic waves. Hertz are commonly expressed in multiples: kilohertz (kHz), megahertz (MHz), gigahertz (GHz), terahertz (THz). Some of the unit's most common uses are in the description of periodic waveforms and musical tones, particularly those used in radio- and audio-related applications. It is also used to describe the clock speeds at which computers and other electronics are driven. The units are sometimes also used as a representation of the energy of a photon, via the Planck relation ''E'' = ''hν'', where ''E'' is the photon's energy, ''ν'' is its freq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kacific
Kacific Broadband Satellites Group (Kacific) is a satellite operator providing a high-speed broadband internet service for the South East Asia and Pacific Islands regions. Its first Ka-band HTS satellite, Kacific1, was designed and built by Boeing and launched into geostationary orbit atop a SpaceX Falcon 9 launch vehicle on 16 December 2019. History Kacific is the brainchild of Christian Patouraux, also CEO, who founded the company in 2013. In its first months, to raise capital and develop the business plan, the company attracted Mark Rigolle and Cyril Annarella, who became co-founders. The company is registered in Vanuatu. In December 2013, Kacific announced its intention to launch Kacific1. This Ka-band high throughput satellite (HTS) placed in geostationary orbit will provide high speed internet to the Pacific region and South East Asia. Designed and manufactured by Boeing, the Kacific1 HTS satellite is based on the 702 satellite platform. Kacific offers direct internet access, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
O3b MPOWER
O3b mPOWER is a communications satellite system currently under construction and deployment. The first two satellites were launched on 16 December 2022 and commercial service is expected to begin in Q3 2023. Owned and operated by SES, O3b mPOWER initially comprises 11 high-throughput and low- latency satellites in a medium Earth orbit (MEO), along with ground infrastructure and intelligent software, to provide multiple terabits of global broadband connectivity for applications including cellular backhaul to remote rural locations and simultaneous international IP trunking.''SES building a 10-terabit O3b mPower constellation'' SpaceNews, 11 September 2017, Accessed 25 August 2020 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SES-17
SES-17, is a high throughput all electric geostationary communications satellite owned and operated by SES S.A., and designed and manufactured by Thales Alenia Space. Launched on 24 October 2021 from Centre Spatial Guyanais (CSG), in Kourou, French Guiana by an Ariane 5ECA launch vehicle, SES-17 was positioned at 67.1° west in May 2022 and, after testing, became fully operational in June 2022.''SES-17 Ka-Band Satellite is Now Operational'' Via Satellite. 16 June 2022. Accessed 25 August 2022 The satellite operates in conjunction with SES's other geostationary satellites and SES's |
SpaceNews
''SpaceNews'' is a print and digital publication that covers business and political news in the space and satellite industry. ''SpaceNews'' provides news, commentary and analysis to an audience of government officials, politicians and executives within the space industry. ''SpaceNews'' details topics in civil, military and space and the satellite communications business. ''SpaceNews'' covers important news in North America, Europe, Asia, Africa, the Middle East and South America from NASA, the European Space Agency, and private spaceflight firms such as Arianespace, International Launch Services, SpaceX and United Launch Alliance. The magazine regularly features profiles on relevant and important figures within the space industry. These profiles have featured numerous government leaders, corporate executives and other knowledgeable space experts, including NASA administrators Richard Truly, Daniel Goldin, Sean O’Keefe, Michael Griffin and Charles Boldin. Founded in 1989, '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Internet Constellation
A satellite internet constellation is a constellation of artificial satellites providing satellite internet service. In particular, the term has come to refer to a new generation of very large constellations (sometimes referred to as a megaconstellations ) orbiting in low Earth orbit (LEO) to provide low-latency, high bandwidth (broadband) internet service. History While more-limited satellite internet services have been available through geosynchronous commsats orbiting in geostationary orbit for years, these have been of quite limited bandwidth (not broadband), high- latency, and provided at such a relatively high price that demand for the services offered has been quite low. In the 1990s, several LEO satellite internet constellations were proposed and developed, including Celestri (63 satellites) and Teledesic (initially 840, later 288 satellites). These projects were abandoned after the bankruptcy of the Iridium and Globalstar satellite phone constellations in the ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuiper Systems
Kuiper Systems LLC is a subsidiary of Amazon that was set up in 2019 to deploy a large broadband satellite internet constellation to provide broadband internet connectivity. The deployment is also referred to by its project name "Project Kuiper". Amazon has signed launch contracts with three launch service providers for a total of 91 launches over the next decade in order to build out the entire constellation, now planned to contain 3,276 satellites. The overall contract value for these launches is in excess of . , no date has been set for when initial launches of the operational constellation will begin. Two initial prototype satellites “KuiperSat-1” and “KuiperSat-2” were originally planned to be launched in the fourth quarter of 2022 with ABL Space Systems on their RS1 rocket. On 12 October 2022, Amazon updated this plan to be on ULA's Vulcan Centaur launch vehicle in "early 2023." History Amazon announced in April 2019 that they would fund and deploy a large br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amazon (company)
Amazon.com, Inc. ( ) is an American multinational technology company focusing on e-commerce, cloud computing, online advertising, digital streaming, and artificial intelligence. It has been referred to as "one of the most influential economic and cultural forces in the world", and is one of the world's most valuable brands. It is one of the Big Five American information technology companies, alongside Alphabet, Apple, Meta, and Microsoft. Amazon was founded by Jeff Bezos from his garage in Bellevue, Washington, on July 5, 1994. Initially an online marketplace for books, it has expanded into a multitude of product categories, a strategy that has earned it the moniker ''The Everything Store''. It has multiple subsidiaries including Amazon Web Services (cloud computing), Zoox (autonomous vehicles), Kuiper Systems (satellite Internet), and Amazon Lab126 (computer hardware R&D). Its other subsidiaries include Ring, Twitch, IMDb, and Whole Foods Market. Its acquisition of Who ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Webb Space Telescope
The James Webb Space Telescope (JWST) is a space telescope which conducts infrared astronomy. As the largest optical telescope in space, its high resolution and sensitivity allow it to view objects too old, distant, or faint for the Hubble Space Telescope. This will enable investigations across many fields of astronomy and cosmology, such as observation of the first stars, the formation of the first galaxies, and detailed atmospheric characterization of potentially habitable exoplanets. The U.S. National Aeronautics and Space Administration (NASA) led JWST's design and development and partnered with two main agencies: the European Space Agency (ESA) and the Canadian Space Agency (CSA). The NASA Goddard Space Flight Center (GSFC) in Maryland managed telescope development, the Space Telescope Science Institute in Baltimore on the Homewood Campus of Johns Hopkins University operates JWST, and the prime contractor was Northrop Grumman. The telescope is named after James E. Webb, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SES S
SES, S.E.S., Ses and similar variants can refere to: Business and economics * Socioeconomic status * Scottish Economic Society, a learned society in Scotland * SES, callsign of the TV station SES/RTS (Mount Gambier, South Australia) * SES S.A. SES S.A. is a Luxembourgish-French satellite telecommunications network provider supplying video and data connectivity worldwide to broadcasters, content and internet service providers, mobile and fixed network operators, governments and insti ..., a satellite owner and operator * Single Economic Space or Eurasian Economic Space, a project of economical integration of five post-Soviet states: Belarus, Kazakhstan, Russia, Armenia, and Kyrgyzstan * Single European Sky * Stock Exchange of Singapore * Subud Enterprise Services Science and technology * SES (universities), Science and Engineering South, a consortium of 6 research-intensive public universities in the Southeast of England, UK * Sedimentation enhancing strategy, Sedimentati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medium Earth Orbit
A medium Earth orbit (MEO) is an geocentric orbit, Earth-centered orbit with an altitude above a low Earth orbit (LEO) and below a high Earth orbit (HEO) – between above sea level.''Catalog of Earth Satellite Orbits'' NASA Earth Observatory. 4 September 2009. Accessed 2 May 2021. The boundary between MEO and LEO is an arbitrary altitude chosen by accepted convention, whereas the boundary between MEO and HEO is the particular altitude of a geosynchronous orbit, in which a satellite takes 24 hours to circle the Earth, the same period as the Earth’s own rotation. All satellites in MEO have an orbital period of less than 24 hours, with the minimum period (for a circular orbit at the lowest MEO altitude) about 2 hours. Satellites in MEO or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iridium Next
The Iridium satellite constellation provides L band voice and data information coverage to satellite phones, pagers and integrated transceivers over the entire surface of Earth. Iridium Communications owns and operates the constellation, additionally selling equipment and access to its services. It was conceived by Bary Bertiger, Raymond J. Leopold and Ken Peterson in late 1987 (in 1988 protected by patents Motorola filed in their names) and then developed by Motorola on a fixed-price contract from July 29, 1993, to November 1, 1998, when the system became operational and commercially available. The constellation consists of 66 active satellites in orbit, required for global coverage, and additional spare satellites to serve in case of failure. Satellites are placed in low Earth orbit at a height of approximately and inclination of 86.4°. The nearly polar orbit and communication between satellites via Ka band inter-satellite links provide global service availability (includin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
