Doppler Radar
Danielson et al
¥Doppler can detect motion toward or away from radar by the
frequency of the return beam
¥Higher - toward radar
¥Lower - away from radar
¥Doppler effect explains why pitch of whistle changes
as a train approaches then moves away
Frequency
of return beam changes when
reflective object is moving either
toward or away from radar. Velocity
can be determined from frequency
shift.
Lower frequency
Higher frequency