News That Matters

Tag: Satellites

UK won't use EU's Galileo satellites after Brexit

UK won't use EU's Galileo satellites after Brexit

Technology
The UK must build its own satellite system after Theresa May confirmed the country will not be involved in the EU's Galileo project post-Brexit. The prime minister said Britain would explore other options to build its own system that can guide military drones, run energy networks and provide essential services for civilian smart phones.Experts have predicted it will cost an estimated £3bn to £5bn, and it is unclear whether the UK will get back the £1.2bn it sunk into the Galileo project.The UK will also work with the US to continue accessing its GPS system.Sky News reported on Thursday that government plans to build Britain's own system could hit the buffers because other countries have already claimed signal space. Image:...
Satellites warn African farmers of pest infestations

Satellites warn African farmers of pest infestations

Science
UK researchers have developed an early warning system to prevent the crops of African farmers from being devastated. The Pest Risk Information Service (Prise) combines temperature data and weather forecasts with computer models. It then sends farmers a mobile phone alert so that they can take precautions.It is hoped that the system will boost yields and increase farm incomes by up to 20%.Prise is being used in Kenya, Ghana and Zambia and will be rolled out soon in other parts of the world.Prise is an upgrade of a highly successful UK Aid scheme run by the Centre for Agriculture and Bioscience International development charity (CABI). It uses a network of so called "plant doctors" and clinics to advise farmers when pests or diseas...
Israeli Aerospace Industries to provide XspressSAR recon satellites

Israeli Aerospace Industries to provide XspressSAR recon satellites

Business
Nov. 21 (UPI) -- XpressSAR will buy up to fourTecSAR synthetic aperture radar satellites with associated support services from Israel Aerospace Industries, under a memorandum of understanding. The deal would cover launches, orbital testing, commissioning and establishing ground operations for the constellation of satellites. XpressSAR will operate the satellites once they are certified as operational in orbit by IAI as a operational delivery. The TecSAR satellite is designed for high-resolution orbitrap intelligence imagery during any light or weather conditions. IAI says they are smaller, lighter and more maneuverable in orbit than similar satellites in their class. "After a long review process of the different solutions available on the market, we are excited to partner with IAI to offe...
German satellites sense Earth's lumps and bumps

German satellites sense Earth's lumps and bumps

Science
The German space agency (DLR) has released a spectacular 3D map of Earth. Built from images acquired by two radar satellites, it traces the variations in height across all land surfaces - an area totalling more than 148 million sq km. DLR is making the map free and open, enabling any scientist to download and use it. There will be myriad applications, from forecasting where flood waters flow to planning big infrastructure projects. How was the map made?The two satellites involved are called TerraSAR-X and TanDEM-X. Like all radar spacecraft, they send down microwave pulses to the surface of the planet and then time how long the signals take to bounce back. The shorter ...
NASA satellites aid study of relativistic particles

NASA satellites aid study of relativistic particles

Science
May 29 (UPI) -- New data collected by NASA satellites suggest local acceleration explains most of the relativistic particles found in the Van Allen radiation belts circling Earth. After analyzing data collected by NASA's Van Allen Probes and the agency's THEMIS satellites, scientists determined electromagnetic waves called chorus waves are responsible for accelerating particles in the Van Allen belts to relativistic speeds. When recorded, the wave's pattern produces a chirping sound that recalls the chorus of a songbird. According to the new research, the waves steadily push ions and electrons found in the belt into higher and higher speeds. By developing models that better explain the propagation of high-energy particles inside the radiation belts, scientists can better predict space we...