Equipment for locating a signal reflection point in a transmission line
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United States of America Patent
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Mar 10, 1987
Grant Date -
N/A
app pub date -
Dec 5, 1984
filing date -
Dec 7, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an equipment for locating a reflection point in a transmission line a recording is obtained of the impulse response of the path of the echo produced by a transmission signal based on a reference signal x(n) constituted by binary sequences of duration NT which comprise only one bit of non-zero value. At the reception end, the equipment comprises a memory for storing N coefficients Ci which are read cyclically with a view to being modified by successive iterations, each coefficient being modified once per read cycle by the term .alpha..Sgn[e(n)], where Sgn[e(n)] is the sign of the difference between the signal received and the coefficient read at a moment NT and .alpha. is a constant less than 1. The coefficients modified and written into the memory form the values of the desired impulse response.
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