The Low-Frequency Array or LOFAR, is a large radio telescope network located in Netherlands, completed in 2012 by ASTRON, the Netherlands Institute for Radio Astronomy and its international partners.

LOFAR consists of a vast array of omni-directional antennas using a new concept in which the signals from the separate antennas are not combined in real time as they are in most array antennas. The electronic signals from the antennas are digitized, transported to a central digital processor, and combined in software to emulate a conventional antenna.