Method and system to provide an improved time domain reflectrometry technique
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United States of America Patent
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Feb 15, 2005
Grant Date -
N/A
app pub date -
Jul 31, 2002
filing date -
Aug 2, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Systems and methods to identify an event(s) representing a discontinuity in the impedance of a transmission line such as a wire cable using time domain reflectrometry (TDR) are presented. According to an exemplary embodiment, multiple layers of digital signal processing techniques are implemented in an algorithm that combats the smearing effect of a wide launch pulses with the reflection due to an event. The algorithm focuses on wavelet decomposition and additional post processing to produce a well-defined signal that allows easy identification of the reflected signal while preserving critical information, such as the location of the event and relative signal strength.
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