TY - GEN
T1 - Low power monostatic pulse borehole radar with an active circulator and an absorptive switch
AU - Cho, Jae Hyoung
AU - Yook, Jong Gwan
AU - Kim, Se Yun
PY - 2013
Y1 - 2013
N2 - A low power monostatic pulse borehole radar system is designed and tested for detecting a subversive intrusion tunnel with about 2 m diameter. According to our calculated budget under the condition that the transmitting signal is over 1 V peak with 10 ns full width half maximum, its switching speed becomes faster than 100 ns for detecting an air-filled tunnel nearby the employed borehole. To satisfy the above requirement, the monostatic pulse radar is fabricated with an active circulator using operational amplifiers and a switch for guaranteeing isolation and cutting off the direct signal. Then, the system performance is evaluated in a well suited tunnel test site. The measured data illustrate that the monostatic pulse radar provides the parabolic pattern of a typical tunnel signature comparable to that of a conventional bistatic pulse radar.
AB - A low power monostatic pulse borehole radar system is designed and tested for detecting a subversive intrusion tunnel with about 2 m diameter. According to our calculated budget under the condition that the transmitting signal is over 1 V peak with 10 ns full width half maximum, its switching speed becomes faster than 100 ns for detecting an air-filled tunnel nearby the employed borehole. To satisfy the above requirement, the monostatic pulse radar is fabricated with an active circulator using operational amplifiers and a switch for guaranteeing isolation and cutting off the direct signal. Then, the system performance is evaluated in a well suited tunnel test site. The measured data illustrate that the monostatic pulse radar provides the parabolic pattern of a typical tunnel signature comparable to that of a conventional bistatic pulse radar.
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U2 - 10.1109/APMC.2013.6694867
DO - 10.1109/APMC.2013.6694867
M3 - Conference contribution
AN - SCOPUS:84893430639
SN - 9781479914746
T3 - Asia-Pacific Microwave Conference Proceedings, APMC
SP - 570
EP - 572
BT - 2013 Asia-Pacific Microwave Conference Proceedings, APMC 2013
T2 - 2013 3rd Asia-Pacific Microwave Conference, APMC 2013
Y2 - 5 November 2013 through 8 November 2013
ER -