High resolution LFMCW radar system using modelbased beat frequency estimation in cable fault localization

Chun Ku Lee, Jin Bae Park, Yong June Shin, Tae Sung Yoon

Research output: Contribution to journalLetter

6 Citations (Scopus)

Abstract

A linear frequency modulated continuous wave (LFMCW) radar is introduced to localize the impedance discontinuities on the instrument cable used in nuclear plants.The LFMCW reflectometry uses a phenomenon that electromagnetic pulses are reflected at the impedance discontinuities to localize impedance discontinuity points on the cable. For localizing impedance discontinuities, time delays between the incident signal and the reflected signals from the impedance discontinuities have to be measured. The LFMCW is modeled by timevarying auto-regressive (AR) model. From the coefficients of the AR model, instantaneous frequency is estimated by the Kalman filtering to calculate the time delays. The performance of the proposed method is verified by experiments.

Original languageEnglish
Journalieice electronics express
Volume11
Issue number1
DOIs
Publication statusPublished - 2013 Dec 17

Fingerprint

continuous wave radar
Continuous wave radar
Frequency estimation
beat frequencies
Radar systems
cables
Time delay
discontinuity
Cables
impedance
Electromagnetic pulse
high resolution
continuous radiation
time lag
electromagnetic pulses
Experiments
coefficients

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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title = "High resolution LFMCW radar system using modelbased beat frequency estimation in cable fault localization",
abstract = "A linear frequency modulated continuous wave (LFMCW) radar is introduced to localize the impedance discontinuities on the instrument cable used in nuclear plants.The LFMCW reflectometry uses a phenomenon that electromagnetic pulses are reflected at the impedance discontinuities to localize impedance discontinuity points on the cable. For localizing impedance discontinuities, time delays between the incident signal and the reflected signals from the impedance discontinuities have to be measured. The LFMCW is modeled by timevarying auto-regressive (AR) model. From the coefficients of the AR model, instantaneous frequency is estimated by the Kalman filtering to calculate the time delays. The performance of the proposed method is verified by experiments.",
author = "Lee, {Chun Ku} and Park, {Jin Bae} and Shin, {Yong June} and Yoon, {Tae Sung}",
year = "2013",
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language = "English",
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journal = "IEICE Electronics Express",
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High resolution LFMCW radar system using modelbased beat frequency estimation in cable fault localization. / Lee, Chun Ku; Park, Jin Bae; Shin, Yong June; Yoon, Tae Sung.

In: ieice electronics express, Vol. 11, No. 1, 17.12.2013.

Research output: Contribution to journalLetter

TY - JOUR

T1 - High resolution LFMCW radar system using modelbased beat frequency estimation in cable fault localization

AU - Lee, Chun Ku

AU - Park, Jin Bae

AU - Shin, Yong June

AU - Yoon, Tae Sung

PY - 2013/12/17

Y1 - 2013/12/17

N2 - A linear frequency modulated continuous wave (LFMCW) radar is introduced to localize the impedance discontinuities on the instrument cable used in nuclear plants.The LFMCW reflectometry uses a phenomenon that electromagnetic pulses are reflected at the impedance discontinuities to localize impedance discontinuity points on the cable. For localizing impedance discontinuities, time delays between the incident signal and the reflected signals from the impedance discontinuities have to be measured. The LFMCW is modeled by timevarying auto-regressive (AR) model. From the coefficients of the AR model, instantaneous frequency is estimated by the Kalman filtering to calculate the time delays. The performance of the proposed method is verified by experiments.

AB - A linear frequency modulated continuous wave (LFMCW) radar is introduced to localize the impedance discontinuities on the instrument cable used in nuclear plants.The LFMCW reflectometry uses a phenomenon that electromagnetic pulses are reflected at the impedance discontinuities to localize impedance discontinuity points on the cable. For localizing impedance discontinuities, time delays between the incident signal and the reflected signals from the impedance discontinuities have to be measured. The LFMCW is modeled by timevarying auto-regressive (AR) model. From the coefficients of the AR model, instantaneous frequency is estimated by the Kalman filtering to calculate the time delays. The performance of the proposed method is verified by experiments.

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