Patent ID: 8359177

Claim:
A multicarrier reflectometry device for on-line diagnosis of at least one transmission line, comprising: a transmission part connected to the transmission line, which comprises successively: a module for parameterizing a test signal S F , such that: s F =[0, c 1 e jθ1 ,c 2 e jθ2 , . . . ,C N/2-1 e jθN/2-1 ,C N/2 ,C N/2-1 e jθN/2-1 ,c N/2-2 e jθN/2-2 , . . . ,c 1 e jθ1 ] T , a module for synthesising this test signal by inverse discrete Fourier transform, and a digital to analog converter, connected to the transmission line, which delivers to the transmission line an analog test signal x(t) that is a periodic signal; a detection part, connected to the transmission line, which comprises successively: an analog to digital converter, connected to the transmission line, which receives a measured signal x s (t) and digitizes the measured signal 8x s (t), a discrete Fourier transform module, and an analysis module containing a deconvolution module, which performs a post-processing of the measured signal thus transformed using the test signal S F and which makes it possible to estimate the transmission response h(t), such that x s (t)=x(t)*h(t), * representing the convolution product.