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Category: satellites

The Global Positioning System (GPS) is a great navigation aid – unless you lose the signal while negotiating a complicated spaghetti junction. That’s bad enough for conventional cars, but for autonomous vehicles it could be catastrophic, so the University of California, Riverside’s Autonomous Systems Perception, Intelligence, and Navigation (ASPIN) Laboratory under Zak Kassas is developing an alternative navigation system that uses secondary radio signals, such as from cell phone systems and Wi-Fi to either complement existing GPS-based systems or as a standalone alternative that is claimed to be highly reliable, consistent, and tamper-proof.

Today, there are two global satellite navigation systems in operation, the US GPS and the Russian GLONASS, with the European Galileo system set to become fully operational in the next few years, and plans for the Chinese Beidou system to extend globally by 2020. These have revolutionized navigation, surveying, and a dozen other fields, but GPS and related systems still leave much to be desired. By their nature, GPS signals are weak and positions need to be confirmed by several satellites, so built up areas or mountainous areas can make the system useless. In addition, GPS signals can be deliberately or accidentally jammed or spoofed due to insufficient encryption and other protections.

In military circles, various supplementary systems are employed with everything from submarines to foot soldiers also using Inertial Navigation System (INS) that emply accelerometers and compasses to calculate positions from the last good GPS fix, but these only work for a limited time before they start to drift.

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Rocket Lab is dedicating itself to launching small satellites cheaply and efficiently — a capability the American company thinks the burgeoning private spaceflight industry desperately needs.

Small satellites, some no bigger than a lunch box, are revolutionizing how people gather data about the Earth, and they might be the future of global communications.

Rocket Lab’s business model is a bit like Henry Ford’s was when he started selling Model T’s: keep the machine simple, produce a lot of them and keep them affordable. Peter Beck, the company’s owner, told Space.com that he’d like to reach a point where Rocket Lab launches one of its custom-made, small-satellite rockets about once per week. And similar to Henry Ford (who didn’t even want to make different colors of the Model T), Beck said that until that basic goal is met, he has no plans to diversify the company’s services. [Satellite Quiz: How Well Do You Know What’s Orbiting Earth?].

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Lee Teschler

Executive Editor

@dw_LeeTeschler

The days of launching complete satellites and similar extraterrestrial objects into orbit may be numbered. Instead, orbiting robots will construct them in space. The basic principles of this concept are being perfected by a company called Tethers Unlimited Inc. in Bothell Wash. under a NASA contract. Tethers’ SpiderFab: Architecture for On-Orbit Construction of Kilometer-Scale Apertures, will enable on-orbit fabrication of super-large objects such as antennas, solar panels, trusses, and other multifunctional structures. In ten years, Tethers expects to perfect the technology to a degree that will make possible self-fabricating, self-assembling satellites.

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DULLES, Va.—()— Orbital ATK, Inc. (NYSE: OA), a global leader in aerospace and defense technologies, and Stratolaunch Systems today announced a multi-year production-based partnership that will offer significant cost advantages to air-launch customers. Stratolaunch Systems, in cooperation with Vulcan Aerospace, is responsible for realizing Paul G. Allen’s vision for space.

“The combination of our extensive air-launch experience and the Stratolaunch aircraft has the potential to provide innovative and cost-effective options for commercial launch customers.” Tweet this

Under this partnership, Orbital ATK will initially provide multiple Pegasus XL air-launch vehicles for use with the Stratolaunch aircraft to provide customers with unparalleled flexibility to launch small satellites weighing up to 1,000 pounds into low Earth orbit. Pegasus has carried out 42 space launch missions, successfully placing more than 80 satellites into orbit for scientific, commercial, defense and international customers.

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A top U.S. general has issued a sobering warning that both China and Russia, given their years of emphasis on upgrading and renovating their space war arsenals, could, in the future, place the United States in a position of weakness if matters were to degenerate into a state of war between the countries. Air Force Gen. John E. Hyten believes that China and Russia have been attempting to outpace the U.S. in military matters with regard to space and that the Pentagon is now moving to counter the foreseen “challenge” of possibly being outmaneuvered and outgunned in space. If a World War 3 scenario were to actualize, he thinks the U.S. should be prepared to meet said challenge.

The Washington Times reported last week that Air Force Gen. John E. Hyten, who has been chosen as the next commander of Strategic Command, told Congress’ Senate Armed Services Committee that the U.S. is moving to counter the threat of a space war disadvantage with China and Russia. He said China and Russia are currently in the process of developing anti-satellite missiles, laser guns, and maneuvering killer space robots that could, once deployed, knock out or incapacitate strategic U.S. communications, navigation and intelligence satellites. As military experts know, these craft are crucial to the maintenance and actionability of America’s high-technology warfare systems.

“The Department of Defense has aggressively moved out to develop responses to the threats that we see coming from China and Russia. I believe it’s essential that we go faster in our responses.”

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Quantum encryption uses the principle of “quantum entanglement” to foster communication that’s totally safe against eavesdropping and decryption by others.

The satellite’s true military nature is being disguised under the civilian name, Quantum Experiments at Space Scale, or QUESS. Publicly, QUESS is being billed as an international research project in the field of quantum physics.

Micius or Mozi is operated by the Chinese Academy of Sciences (CAS) while the University of Vienna and the Austrian Academy of Sciences run the satellite’s European receiving stations. The quantum satellite was launched last Aug. 16 from the Jiuquan Satellite Launch Center in the Gobi Desert.

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The nominee to lead the U.S. Strategic Command warned Congress this week that China and Russia are rapidly building space warfare capabilities and the United States is lagging behind in efforts to counter the threat.

Both Beijing and Moscow are developing anti-satellite missiles and laser guns and maneuvering killer space robots that could cripple strategic U.S. communications, navigation and intelligence satellites, the backbone of American high-technology warfare.

Air Force Gen. John E. Hyten, picked to be the next Stratcom commander, told the Senate Armed Services Committee that Chinese and Russian space weapons pose “an emerging challenge” and that the Pentagon is accelerating its efforts to counter the threat.

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China will launch its Tiangong-2 space lab from the Jiuquan Satellite Launch Center on a Long March-2F T2 rocket in northwestern China’s Gobi desert at 10:04 p.m. Thursday as part of an increasingly ambitious space program that aims for a manned space station by around 2022.

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Before 3- months ago, news broke that a giant “alien mega structure” could survive around bizarre-looking star 1,500 light-years away. The 1st signs of this space peculiarity came from NASA’s planet-hunting Kepler space telescope, which continually watched the star’s region of the sky between 2009 and 2013. The majority planet-hosting stars looking small, regular dips in light when their planets pass in front of them. But Tabby’s star dipped randomly throughout the 4-years, from time to time losing as much as 20 percent of its brightness. In September 2015, a group led by Tabetha Boyajian of Yale University, who lend the star its informal name, tried to create sense of this strange signal. Ultimately they determined that dust from a huge cloud of comets was the top explanation. Click Below Link To Play Video Online Shocking News Alien Mega structure In Universe Video;

A month later, the star complete headline crossways the globe thanks to a paper by Jason Wright of Pennsylvania State University and his fellows, who suggested that “alien mega structures”, such as satellites designed to gather light from the star, could be responsible for the signal.

While the scene of aliens was 1st launched by Penn State Scientist Jason Wright, almost everybody in the astronomy the people agreed that the chances that this was the case were “very low.”

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