Distance measuring device and distance measuring method
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United States of America Patent
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Apr 26, 2011
Grant Date -
Oct 8, 2009
app pub date -
Aug 25, 2006
filing date -
Sep 2, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There are provided a distance measuring device and a distance measuring method characterized by 'simple configuration', 'capability of measuring a near distance', and 'a small measurement error' like a distance measuring device using a standing wave. The distance measuring device includes a signal source (1) for outputting a signal having a plurality of different frequency components within a particular bandwidth, a transmission unit (2) for transmitting a signal as an undulation, s mixed wave detection unit (3) for detecting a mixed wave VC obtained by mixing a progressive wave VT transmitted and a reflected wave VRk of the progressive wave VT reflected by a measurement object (6), a frequency component analysis unit (4) for analyzing the frequency component of the mixed wave VC detected, and a distance calculation unit (5) for obtaining a distance spectrum by subjecting the analyzed data further to spectrum analysis, thereby calculating the distance to the measurement object (6).
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