| Title |
Diagnosis of Nuclear Cable using LFMCW Technique Based on MUSIC Algorithm |
| Authors |
정문강(Moon Kang Jung) ; 최윤호(Yoon Ho Choi) |
| DOI |
https://doi.org/10.5370/KIEE.2019.68.6.768 |
| Keywords |
Reflectometry ; MUSIC algorithm ; Velocity of propagation ; Reflection coefficient ; Impedance discontinuity |
| Abstract |
In this paper, we present a fault location method based on reflectometry for the diagnosis of a nuclear cable. The diagnosis system transmits the incident signal to a nuclear cable and measures the reflected signal. In the diagnosis system, a linear frequency modulated continuous wave(LFMCW) is used as the reference signal to eliminate the influences of external noise. To improve the spatial resolution of the reflectometry, we estimate the beat frequency using the multiple signal classification(MUSIC) method, which is known as super resolution method. The proposed method makes it possible to detect the impedance discontinuities in a nuclear cable with high spatial resolution. Finally, experiments are conducted on nuclear cables with the impedance discontinuities to verify the performance of the proposed method. |