"Following the switch-on, MIRAS is working beautifully well with all key subsystems, including all of the receivers, the optical fibres and the correlator unit, in perfect functioning condition," said ESA’s Manuel Martin-Neira, SMOS Instrument Principal Engineer.
"We have been able to produce reasonable test data even without in-orbit calibration."
MIRAS (Microwave Imaging Radiometer using Aperture Synthesis) is an L-band radiometer with 69 receivers mounted on three deployed arms to measure the radiation coming from Earth.
To assess the electrical performance of the instrument after switch-on while limiting the consumption of heater power, the physical temperature for start up was set to 10°C.
"The active thermal control is now in operation and is keeping the instrument well within the expected temperature range," Mr Martin-Neira said. "Tomorrow we expect to assess the payload at the final 22°C temperature."
The central payload computer also controls the 'mass memory', which collects all the science data from the receivers and sends them to receiving stations on the ground. The high-speed downlink, which transmits the data to the ground station, was switched on, and data have been transmitted to ESA’s European Space Astronomy Centre (ESAC), in Villafranca, Spain. The data acquisition and processing systems located at ESAC are also working well, and the first test of the product generation system has been successful."With the critical launch and early orbit phase completed, the engineers can now evaluate the quality of the downlinks and concentrate on the calibration of the instrument," SMOS Project Manager Achim Hahne said.
"We are very happy that we have received the first data from MIRAS, which we expect to make very strong contributions to scientists' understanding of Earth's water cycle," said Guillermo Buenadicha, SMOS Payload Operations Engineer at ESAC.
"We are now looking forward to analysing the first data and to start testing the processing systems in the ground station," SMOS Mission Manager Susanne Mecklenburg said.
The SMOS (Soil Moisture and Ocean Salinity) Earth Explorer satellite and ESA's Proba-2 were launched into orbit together from the Plesetsk Cosmodrome in northern Russia on 2 November.
Robert Meisner | EurekAlert!
Construction of practical quantum computers radically simplified
05.12.2016 | University of Sussex
UT professor develops algorithm to improve online mapping of disaster areas
29.11.2016 | University of Tennessee at Knoxville
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
05.12.2016 | Power and Electrical Engineering
05.12.2016 | Materials Sciences
05.12.2016 | Power and Electrical Engineering