Analyzing Radar Meteor Trail Echoes using the Fresnel Transform Technique: A Signal Processing Viewpoint

Details Analyzing Radar Meteor Trail Echoes using the Fresnel Transform Technique: A Signal Processing Viewpoint Analyzing Radar Meteor Trail Echoes using the Fresnel Transform Technique: A Signal Processing Viewpoint

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007em%26p..101...27r&link_type=abstract

Earth, Moon, and Planets, Volume 101, Issue 1-2, pp. 27-39

Computer Science

Performance

1

Meteors, Meteoroids, Radar Velocity, Fresnel Transform, Matched Filters

Scientific paper

Several techniques have been proposed for measuring speeds of meteoroids observed using radars. A recent technique involves the use of Fresnel transforms to accurately determine the speed of a meteoroid producing the trail. We follow a numerical modeling approach to analyze this technique in detail. Our studies indicate that high sensitivity to background noise levels might be a possible shortcoming of the Fresnel transform method. A matched filtering approach is presented as an alternative to alleviate this sensitivity to the noise problem. Performance of the two techniques is compared using numerical modeling and data from a 30 MHz radar.

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