Journal ArticleDOI
Detection of objects by synthetic aperture FM‐CW radar
TLDR
In this paper, the principle of the synthetic aperture technique for the conventional FM-CW radar was considered and the fundamental detection results of objects placed in the free space were presented. But the results were limited to an anechoic chamber using an explored radar system.Abstract:
The frequency-modulated continuous-wave (FM-CW) radar is suitable for detecting objects placed in the near range compared to the pulse radars. This paper considers the principle of the synthetic aperture technique for the conventional FM-CW radar and presents the fundamental detection results of objects placed in the free space. A laboratory measurement is carried out to detect a metallic plate and a pipe in an anechoic chamber using an explored radar system operative in the microwave X-band. This demonstrates the high resolution detection in azimuth direction in the Fresnel region. It is shown that the radar has a potential ability in imaging objects placed in the near range.read more
Citations
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Journal ArticleDOI
A Multi-Beam and Multi-Range Radar with FMCW and Digital Beam Forming for Automotive Applications
TL;DR: In this paper, a multi-beam and multi-range (MBMR) radar with frequency modulated continuous wave (FMCW) waveform and digital beam forming (DBF) algorithm is proposed to cover a detection area of long range and narrow angle (150m, §10 - ) as well as short range and wide angle (60m, 30 - ), as a single 24GHz sensor.
Journal ArticleDOI
Resolving the internal and basal geometry of ice masses using imaging phase-sensitive radar
Tun Jan Young,Tun Jan Young,Dustin M. Schroeder,Poul Christoffersen,Lai Bun Lok,Keith W. Nicholls,Paul V. Brennan,Samuel H. Doyle,Bryn Hubbard,Alun Hubbard +9 more
TL;DR: In this paper, a phase sensitive radio-echo sounder (pRES) is used to measure the orientation of dip internal reflectors and the potential deviation from nadir of their associated reflections, extending the capabilities of pRES beyond conventional depth sounding.
Journal ArticleDOI
A beam scanning frequency modulated continuous wave radar
K.L. Chan,S.R. Judah +1 more
TL;DR: It is shown possible to extract the target range and angular position by analyzing the target echo in both time and frequency domains by adding a frequency scanning antenna to a conventional frequency modulated continuous wave radar.
Journal ArticleDOI
Synthetic aperture FM-CW radar applied to the detection of objects buried in snowpack
TL;DR: The synthetic aperture technique is explained with emphasis placed on showing that the Fourier transformed beat signal obtained by the FM-CW radar is equivalent to one kind of Fresnel hologram, which leads the authors to use the SAR technique.
Proceedings ArticleDOI
Synthetic aperture FM-CW radar applied to the detection of objects buried in snowpack
TL;DR: In this paper, the authors present a principle of synthetic aperture FM-CW radar and show the detection results at several objects in natural snowpack by an FM-CWR radar, which was able to obtain images with high resolution in the azimuth direction in the snowpack.
References
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Journal ArticleDOI
Three-dimensional imaging of objects in accumulated snow using multifrequency holography
TL;DR: In this article, a 3D imaging reconstruction technique using multifrequency holography is proposed that is applied to recognize the shapes of the objects buried in snow using an experimental system using X-band microwaves.
Journal ArticleDOI
Advanced subsurface radar system for imaging buried pipes
TL;DR: In this article, a subsurface radar system for imaging buried pipes was developed, which is capable of reconstructing clear pipe images under unfavorable conditions, such as large attenuation rate of the radio waves propagating in soil.