NewSat’s Chief Technology Officer (CTO), David Ball, an executive focusing on scientific and technological issues within the organization, features in APB’s Satellite Special. He discusses the big changes within the satellite industry, as well as news that shakes and shapes the market.
Ball sketches out three growth areas and threats to the satellite market. Aside from that, he also provides an update on the Jabiru Satellite Program’s fleet of Ka band satellites.
NewSat is to date the largest independent provider of satellite communications/communications satellite (COMSAT) or artificial satellite stationed in space for the purpose of telecommunications in the Commonwealth of Australia, a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans.
Newsat provides coverage to 75.5% of the Earth’s surface, including their satellites, VSATs (very small aperture terminals), a two-way satellite ground station or a stabilized maritime VSAT antenna with a dish antenna that is smaller than three meters, and teleports (telecommunications port), a satellite ground station with multiple parabolic antennas (i.e., an antenna farm) that functions as a hub connecting a satellite or geocentric orbital network with a terrestrial telecommunications network.
See: 'Voyager 1' Mission Profile: Exploration of Jupiter
Showing posts with label telecommunications. Show all posts
Showing posts with label telecommunications. Show all posts
Monday, July 23, 2012
Wednesday, July 18, 2012
The C Band Interference
There is one issue that refuses to go away for the satellite industry. It is the C band interference.
ABS’s Chief Operating Officer Scott Sprague said “C band Wi-max issues and interference are always a worry.” He said that the satellite is used for lifeline-like services and then there is also the economic impact.
SES World Skies’s Senior Vice-President Deepak Mathur at SES agreed: “C band is an enormous issue and will be an ongoing issue. We have to remember 98% of video content in Asia is delivered by C band.”
The C band is the name given to certain portions of the electromagnetic spectrum which includes wavelengths of microwaves that are used for long distance radio telecommunications. The IEEE C band (4 GHz to 8 GHz) and its slight variations contains frequency ranges that are used for many satellite communications transmissions, some WiFi devices, some cordless telephones, and some weather radar systems.
The microwave frequencies of this band perform better under adverse weather conditions in comparison with others, especially Ku band (11.2 GHz tyo 14.5 GHz) microwave frequencies which are used by another large set of communication satellites. The adverse weather conditions, collectively referred to a rain fade, all have to do with moisture in the air, including rain and snow.
See: 'Voyager 1': Pre-Voyager Mission Interstellar Mission Profile
ABS’s Chief Operating Officer Scott Sprague said “C band Wi-max issues and interference are always a worry.” He said that the satellite is used for lifeline-like services and then there is also the economic impact.
SES World Skies’s Senior Vice-President Deepak Mathur at SES agreed: “C band is an enormous issue and will be an ongoing issue. We have to remember 98% of video content in Asia is delivered by C band.”
The C band is the name given to certain portions of the electromagnetic spectrum which includes wavelengths of microwaves that are used for long distance radio telecommunications. The IEEE C band (4 GHz to 8 GHz) and its slight variations contains frequency ranges that are used for many satellite communications transmissions, some WiFi devices, some cordless telephones, and some weather radar systems.
The microwave frequencies of this band perform better under adverse weather conditions in comparison with others, especially Ku band (11.2 GHz tyo 14.5 GHz) microwave frequencies which are used by another large set of communication satellites. The adverse weather conditions, collectively referred to a rain fade, all have to do with moisture in the air, including rain and snow.
See: 'Voyager 1': Pre-Voyager Mission Interstellar Mission Profile
Tuesday, July 17, 2012
NewSat Towards the World
NewSat, Australia’s largest satellite communications company, is providing vital communications for Australian Defence personnel located in far-flung places. They are also now preparing to launch its very own communications satellite.
Mike Keneally, Vice-President of Satellite Strategy, speaks to Grant Smith about the company’s Government Accredited Adelaide and Perth teleports, the services the Teleports provide Australian and US Defence Force personnel and Jabiru-1, Australia’ first locally owned commercial satellite.
See: ‘Voyager 1′ Before the Voyager Interstellar Mission
Mike Keneally, Vice-President of Satellite Strategy, speaks to Grant Smith about the company’s Government Accredited Adelaide and Perth teleports, the services the Teleports provide Australian and US Defence Force personnel and Jabiru-1, Australia’ first locally owned commercial satellite.
See: ‘Voyager 1′ Before the Voyager Interstellar Mission
Monday, July 16, 2012
VSAT History
The concept of the geostationary orbit was originated by Russian theorist Konstantin Tsiolkovsky, an Imperial Russian and Soviet rocket scientist and pioneer of the astronautic theory. He wrote articles in space travel at the turn of the century.
In the 1920s, Hermann Oberth and Herman Potocnik, aka Herman Noordung, described an orbit at an altitude of 35,900 kilometers. Its orbital period, or the time for it to make one complete orbit about another object, exactly matched the Earth’s rotational period, making it appear to hover a fixed point on the Earth’s equator.
Arthur C. Clarke contributed to the understanding of satellites through an article published in Wireless World in October 1945 titled “Extra-Terrestrial Relays: Can Rocket Stations Give Worldwide Radio Coverage?” In this article, Clarke not only determines the orbital characteristics/elements, or the parameters required to uniquely identify a specific orbit, necessary for a geostationary orbit, but also discusses the frequencies and power needed for communications.
Live satellite communications was developed in the sixties by the National Aeronautics and Space Administration (NASA), named Syncom 1-3. It is transmitted live coverage of the 1964 Olympics in Japan to viewers in the United States and Europe. Soon after, on April 6, 1965, the first commercial satellite was launched into space, Intelsat I, nicknamed Early Bird.
The first commercial VSATs were C band (6 GHz) receive-only systems by Equatorial Communications using spread spectrum technology. More than 30,000 60 cm antenna systems were sold in the early 1980s. Equatorial later developed a C band (4/6 GHz) two-way system using 1 m x 0.5 m antennas and sold about 10,000 units in 1984-85.
In 1985, Schlumberger Oilfield Research co-developed the world’s first Ku band (12-14 GHz) VSATs with Hughes Aerospace to provide portable network connectivity for the oil field drilling and exploration units. Ku Band VSATs make up the vast majority of sites in use today for data or telephony applications. The largest VSAT network (more than 12,000 sites) was developed by Spacenet and MCI for the US Postal Service.
See: SDI is No "Star Wars"
In the 1920s, Hermann Oberth and Herman Potocnik, aka Herman Noordung, described an orbit at an altitude of 35,900 kilometers. Its orbital period, or the time for it to make one complete orbit about another object, exactly matched the Earth’s rotational period, making it appear to hover a fixed point on the Earth’s equator.
Arthur C. Clarke contributed to the understanding of satellites through an article published in Wireless World in October 1945 titled “Extra-Terrestrial Relays: Can Rocket Stations Give Worldwide Radio Coverage?” In this article, Clarke not only determines the orbital characteristics/elements, or the parameters required to uniquely identify a specific orbit, necessary for a geostationary orbit, but also discusses the frequencies and power needed for communications.
Live satellite communications was developed in the sixties by the National Aeronautics and Space Administration (NASA), named Syncom 1-3. It is transmitted live coverage of the 1964 Olympics in Japan to viewers in the United States and Europe. Soon after, on April 6, 1965, the first commercial satellite was launched into space, Intelsat I, nicknamed Early Bird.
The first commercial VSATs were C band (6 GHz) receive-only systems by Equatorial Communications using spread spectrum technology. More than 30,000 60 cm antenna systems were sold in the early 1980s. Equatorial later developed a C band (4/6 GHz) two-way system using 1 m x 0.5 m antennas and sold about 10,000 units in 1984-85.
In 1985, Schlumberger Oilfield Research co-developed the world’s first Ku band (12-14 GHz) VSATs with Hughes Aerospace to provide portable network connectivity for the oil field drilling and exploration units. Ku Band VSATs make up the vast majority of sites in use today for data or telephony applications. The largest VSAT network (more than 12,000 sites) was developed by Spacenet and MCI for the US Postal Service.
See: SDI is No "Star Wars"
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