Recent advances in wireless computing technology could improve deep-space missions like asteroid research and remote spacecraft operations by changing the way signals are sent from Earth. A new method designed to effectively deliver commands and instructions using hundreds of millions of tiny transmitters linked together could also free the giant satellite dishes currently used to send and receive the long-range information for other applications. A research paper describing the scheme for relatively simple high-power transmitters will be published in the October issue of Radio Science, a journal of the American Geophysical Union.
The technique is based on a principle known as a phased array, a method to align a number of mini-transmitters alongside one another and direct their combined beam into the sky. Such a system has previously been used for military radar technology, but has only recently become cost effective for civilian use because of improvements in consumer computing technology, according to the paper authored by Louis Scheffer at Cadence Design Systems. He indicates that the advantages from so many individual transmitters, using designs similar to cell phone technology, could include improved reliability and efficiency over currently used systems while reducing the transmission costs associated with the mammoth satellite dishes. Overall, he suggests that the net result could be significantly lowered costs for space communications, more data from science spacecraft, and an increase in planetary and deep-space research that requires remote signals.
Currently, planetary radars and distant spacecraft communications need transmitters with extremely high power, which has been accomplished by combining a strong microwave source with a large reflective antenna. This is now done with giant satellite dishes mechanically steered to a point in the sky. NASAs Goldstone radar, for example, the agencys sensitive, deep-space analysis radar, uses a 500 kilowatt transmitter and a 70-meter [230-foot] reflector for tracking asteroids that may collide with Earth. The large antenna is focused on only a small point in space at a time, and must be adjusted--and occasionally shut down--due to changing weather conditions. In addition, Scheffer points out that while almost all of the worlds largest antennas are used to both send and receive, the powerful transmissions severely hinder their ability to detect faint signals from space.
Harvey Leifert | EurekAlert!
Seismic study reveals huge amount of water dragged into Earth's interior
18.12.2018 | National Science Foundation
A damming trend
17.12.2018 | Michigan State University
Different eras of civilization are defined by the discovery of new materials, as new materials drive new capabilities. And yet, identifying the best material...
Researchers from the University of Basel have reported a new method that allows the physical state of just a few atoms or molecules within a network to be controlled. It is based on the spontaneous self-organization of molecules into extensive networks with pores about one nanometer in size. In the journal ‘small’, the physicists reported on their investigations, which could be of particular importance for the development of new storage devices.
Around the world, researchers are attempting to shrink data storage devices to achieve as large a storage capacity in as small a space as possible. In almost...
The more objects we make "smart," from watches to entire buildings, the greater the need for these devices to store and retrieve massive amounts of data quickly without consuming too much power.
Millions of new memory cells could be part of a computer chip and provide that speed and energy savings, thanks to the discovery of a previously unobserved...
What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes - while significantly reducing your...
A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.
The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...
12.12.2018 | Event News
10.12.2018 | Event News
06.12.2018 | Event News
19.12.2018 | Materials Sciences
19.12.2018 | Materials Sciences
19.12.2018 | Life Sciences