Results 1 to 10 of about 1,538 (216)
Analysis of the Borehole Effect in Borehole Radar Detection [PDF]
Sensors, 2020 The directional borehole radar can accurately locate and image the geological target around the borehole, which overcomes the shortcomings that the conventional borehole radar can only detect the depth of the target and the distance from the borehole ...
Sixin Liu, Xuzhang Shen, Wenjun Zheng
exaly +8 more sources
Borehole Radar Experiment in a 7500 m Deep Well [PDF]
SensorsThis paper presents the world’s first radar detection experiment conducted in a 7500-m ultra-deep well. By applying ground-penetrating radar technology to petroleum logging, the developed borehole radar system successfully achieved stratigraphic ...
Huanyu Yang +4 more
doaj +3 more sources
Radar in 7500 m Well Based on Channel Adaptive Algorithm [PDF]
SensorsDeep-well radar telemetry over ultra-long cables suffers from strong frequency-selective attenuation and impedance drift under high temperature and pressure.
Handing Liu +5 more
doaj +3 more sources
Tunnel Assessment with Borehole Radar [PDF]
Proceedings, 2016 The collapse of a tunnel and the damage in a second tunnel during the construction works, forced to the assessment of the ground in the front tunnel of the second structure, in order to avoid additional problems. The first evaluation was carried out with a borehole radar, because the structure was in a populated zone of a dense city.
Pérez Gracia, María de la Vega +3 more
openaire +3 more sources
Numerical Simulation Study on the Impact of Blind Zones in Ground Penetrating Radar [PDF]
SensorsGround-penetrating radar (GPR) is an effective geophysical method for rapid and non-destructive detection. Directional borehole radar is the application of GPR in a borehole, which can determine the depth, orientation, and distance of the target from the
Wentian Wang +3 more
doaj +2 more sources
Rock mass integrity evaluation method of roadway surrounding rock mass based on borehole image acoustic radar data [PDF]
Scientific ReportsThe integrity of the roadway surrounding rock is directly related to the safety and stability of the mine, and it is of great significance to carry out a rapid evaluation method for the surrounding rock integrity of the coal mine roadway during the ...
Wang Jinchao +4 more
doaj +2 more sources
3D Imaging Algorithm of Directional Borehole Radar Based on Root-MUSIC
Remote Sensing, 2021 A directional borehole radar consists of one transmitting antenna in the borehole and four receiving antennas distributed at equal angles in a ring. The receiving antennas can determine the depth and orientation of targets beside the borehole.
Sixin Liu, Xuzhang Shen, Wenjun Zheng
exaly +3 more sources
Topographic correction for ground penetrating radar for enhanced detection of dike subsurface anomalies [PDF]
Scientific ReportsDikes are critical components of flood control infrastructure in China. Ground-penetrating radar (GPR) is widely used for non-destructive detection of subsurface anomalies (e.g., cavities, seepage paths, and soil loosening) in dikes.
Changzheng Li, Xiang Zhao
doaj +2 more sources
Research progress on key issues of UWB radar echo information processing for borehole rescue
Meikuang Anquan, 2023 Borehole rescue technology has been widely used as a new rescue technique for the rapid construction of life way. UWB radar can be used to detect life information under non-visual conditions, but the UWB radar echoes are easily affected by the noise ...
Xuezhao ZHENG +5 more
doaj +1 more source
3D Contour Shaping of Buried Objects in Soil [PDF]
Advances in Radio Science, 2021 The basic question of this paper was, whether a detected anomaly found in the ground during an explosives disposal process is actually a non-detonated bomb or non-dangerous metallic scrap.
C. Siebauer, H. Garbe
doaj +1 more source