Method and device for determining separation and relative speed of a distant object
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United States of America Patent
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Mar 8, 2005
Grant Date -
Sep 25, 2003
app pub date -
Mar 4, 2003
filing date -
Oct 10, 2000
priority date (Note) -
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Abstract
The distance and relative speed of an object remote from an observation point determined using a signal form which includes two signals having a predetermined spacing relative to each other. The two signals are transmitted for a certain time interval during which the frequency of the signals is modulated in a stepwise fashion. Additionally, the signal sections of the two signals are transmitted alternately for each step so that there is a predetermined frequency spacing between the signal sections being emitted consecutively.
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