Nippon/Norway Svalbard Meteor Radar (NSMR)

The Nippon / Norway Svalbard Meteor Radar (NSMR), is a so-called "meteor wind" radar (MWR), operates at 31 MHz and is located in Adventdalen approximately 10km SW of Longyearbyen. The antenna system consists of five receiver antennas arranged in a "Jones et al. cross" and one transmitter antenna All antennas are 3-element crossed Yagis. Average power is only around 500W but this is spread over almost all the sky (and thus a negligible radiation hazard) in order to "pick up" as many meteor trails as possible. Echoes are mostly from around 90km altitude, and wind blowing the meteor trails is one parameter measured by the radar. The rate at which the meteor trails fade gives information on temperature of the surrounding atmosphere.

Source/Website: radars.uit.no/NSMR-index.html
Webcam: radars.uit.no/nsmr-outside.jpg