Leatherhead, 25 march 2009 – ASTRON, the Netherlands Institute for Radio Astronomy has chosen Juniper J Series routers which will be delivered by Infradata. Next to the delivery of this equipment Infradata will also take care of the support on the network.
ASTRON makes scientific discoveries in radio astronomy possible by developing new and innovative instruments, exploitation of telescopes of extreme quality and the research in astronomy.
The new J Series routers will be used for the LOFAR project. LOFAR started as a new and innovative effort to force a breakthrough in sensitivity for astronomical observations at radio-frequencies below 250 MHz. The basic technology of radio telescopes had not changed since the 1960's: large mechanical dish antennas collect signals before a receiver detects and analyses them. Half the cost of these telescopes lies in the steel and moving structure. A telescope 100x larger than existing instruments would therefore be unaffordable. New technology was required to make the next step in sensitivity needed to unravel the secrets of the early universe and the physical processes in the centers of active galactic nuclei.
LOFAR is the first telescope of this new sort, using an array of simple omni-directional antennas instead of mechanical signal processing with a dish antenna. The electronic signals from the antennas are digitised, transported to a central digital processor, and combined in software to emulate a conventional antenna. The cost is dominated by the cost of electronics and will follow Moore's law, becoming cheaper with time and allowing increasingly large telescopes to be built. So LOFAR is an IT-telescope. The antennas are simple enough but there are a lot of them - about 7000 in the full LOFAR design. To make radio pictures of the sky with adequate sharpness, these antennas are to be arranged in clusters that are spread out over an area of 100 km in diameter within the Netherlands and over 1500 km throughout Europe. Data transport requirements are in the range of many Tera-bits/sec and the processing power needed is tens of Tera-FLOPS.
It was soon realised that LOFAR could be turned into a more generic Wide Area Sensor Network. Sensors for geophysical research and studies in precision agriculture have been incorporated in LOFAR already. Several more applications are being considered, given the increasing interest in sensor networks that “bring the environment on-line.”
“We are glad to contribute in a project like LOFAR. ASTRON is an interesting institute with advanced networks with high speed and a lot of data. That our services match in the vision and the technologies of ASTRON is a very big compliment”; says Leon de Keijzer, Managing Director of Infradata