Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 4 3 2004 10.5194/acp-4-679-2004 http://www.atmos-chem-phys.net/4/679/2004/ http://www.atmos-chem-phys.net/4/679/2004/acp-4-679-2004.html http://www.atmos-chem-phys.net/4/679/2004/acp-4-679-2004.pdf 679 684 2004-05-07 Canadian Meteor Orbit Radar (CMOR) A. R. Webster P. G. Brown J. Jones K. J. Ellis M. Campbell-Brown Department of Physics, The University of Western Ontario, Canada Department of Electrical and Computer Engineering, The University of Western Ontario, Canada Defence Science and Technology Organisation, Edinburgh, SA 5111, Australia European Space Agency, ESTEC, SCI-SB, Keplerlaan 1, NL-2201 AZ Noordwijk ZH, The Netherlands The radar system described here (CMOR) comprises a basic 5-element receiving system, co-located with a pulsed transmitter, specifically designed to observe meteor echoes and to determine their position in space with an angular resolution of ~1° and a radial resolution of ~3 km. Two secondary receiving sites, a few km distant and arranged to form approximately a right angle with the base station, allow the determination of the velocity (speed and direction) of the meteor that, together with the time of occurrence, lead to an estimate of the orbit of the original meteoroid. Some equipment details are presented along with a method used to determine the orbits. Representative echoes are shown and observations on the 2002 Leonid shower presented.