Abstract:In this paper, we propose a method to reduce the blind spot based on signal processing that indicates the minimum length of a cable under test in the time-frequency domain reflectometry without using an extension cable or adding a new high-speed hardware component. The time-frequency domain reflectometry adopted the proposed method can be achieved with not only a simple modification of the previous system but also a simple technique based on signal processing. The experimental results show that the proposed method allows us to estimate fault distance on the cable with high spatial resolution. Keywords: time-frequency domain reflectometry, blind spot, spatial resolution, fault detection Classification: Science and engineering for electronics Technol., vol. 8, pp. 1278Technol., vol. 8, pp. -1283Technol., vol. 8, pp. , 1990. OTDR with high-spatial resolution for short haul applications," IEEE Photon. Technol. Lett., vol. 9, pp. 1140-1142 Y. J. Shin, E. J. Powers, T. S. Choe, C. Y. Hong, E. S. Song, J. G. Yook, and J. B. Park, "Application of time-frequency domain reflectometry for detection and localization of a fault on a coaxial cable," IEEE Trans.
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