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Proceedings of ISSSTA'95 International Symposium on Spread Spectrum Techniques and Applications, 2002
The objective of the described CW radar resulted from the threat by anti-radiation-missiles. Instead of a scanning transmit beam with high gain an antenna with a broad illumination pattern is used. Therefore the radiation may be covered by a decoy transmitter all the time. The transmitted CW-signal is modulated by a polyphase code for range resolution.
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The objective of the described CW radar resulted from the threat by anti-radiation-missiles. Instead of a scanning transmit beam with high gain an antenna with a broad illumination pattern is used. Therefore the radiation may be covered by a decoy transmitter all the time. The transmitted CW-signal is modulated by a polyphase code for range resolution.
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Advanced polarimetric subsurface FM-CW radar
IEEE Transactions on Geoscience and Remote Sensing, 1998The subsurface radar suffers from two typical problems, i.e., strong clutter from surface and severe wave attenuation in the underground. This paper presents a unique countermeasure to these problems using a polarimetric FM-CW radar and an equivalent sensitivity time control (STC) technique.
T. Moriyama +3 more
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Proceedings of the IEEE, 1972
Raven has analyzed the CW radar output assuming a low-level sinusoidal phase disturbance. The radar output is herein analyzed for arbitrary amplitude sinusoidal phase disturbance. Also, the output amplitude spectrum is shown to be related in a particularly simple way to the local oscillator amplitude spectrum.
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Raven has analyzed the CW radar output assuming a low-level sinusoidal phase disturbance. The radar output is herein analyzed for arbitrary amplitude sinusoidal phase disturbance. Also, the output amplitude spectrum is shown to be related in a particularly simple way to the local oscillator amplitude spectrum.
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CW radar for monitoring water-to-cellular concrete
2014 11th European Radar Conference, 2014The physical deterioration of concrete structures is mainly caused by their moisture content. Consequently, methods dedicated to contactless, non-destructive and real-time monitoring of moisture content levels are required to control the deterioration of buildings.
Haddadi, Kamel, Lasri, Tuami
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Fourth International Kharkov Symposium 'Physics and Engineering of Millimeter and Sub-Millimeter Waves'. Symposium Proceedings (Cat. No.01EX429), 2002
At IRCTR, a collision avoidance radar demonstrator (Colarado) for autonomous vehicles is under development. The radar task is to avoid collisions by detecting the presence of obstacles and by determining the obstacle positions and velocities in the near range of the radar. In the years 1996-1999, an X-band (centre frequency 9.75 GHz, bandwidth 1.5 GHz)
L.P. Ligthart +4 more
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At IRCTR, a collision avoidance radar demonstrator (Colarado) for autonomous vehicles is under development. The radar task is to avoid collisions by detecting the presence of obstacles and by determining the obstacle positions and velocities in the near range of the radar. In the years 1996-1999, an X-band (centre frequency 9.75 GHz, bandwidth 1.5 GHz)
L.P. Ligthart +4 more
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Coherent FM-CW millimeter-wave radar systems for radar cross-section measurements
6th IEEE Conference Record., Instrumentation and Measurement Technology Conference, 1990Coherent instrumentation radars have been developed at 35 and 94 GHz for use in radar cross section measurements at angles of incidence ranging from 0 degrees to 60 degrees . The systems are designed to measure the radar cross section of various targets, at like and cross-polarizations, in an effort to better understand their scattering characteristics.
R.T. Lawner +2 more
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A 90 GHz FM-CW-RADAR Transmitter
MTT-S International Microwave Symposium Digest, 2005The design and the performance of an FM-CW-RADAR transmitter for 90 GHz set up synchronized and powercombined IMPATT-oscillators are presented in this paper. The synchronising source consists of a 45 GHz-Gunn-oscillator which is simultaneously swept and doubled by the same varactor.
H. Barth, M. Bischoff
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Clutter map for a CW surveillance radar
2012 13th International Radar Symposium, 2012A Radar target detection procedure for a surveillance Ku-band radar is considered in this paper. The radar system applies a Frequency Modulated Continuous Wave (FMCW) transmit signal with very short chirp duration. The specific waveform has been selected to measure with high resolution target range and radial velocity simultaneously and unambiguously ...
Matthias Kronauge, Hermann Rohling
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Two-tone CW complex holographic radar imaging
Proceedings of IEEE Antennas and Propagation Society International Symposium, 2002A method that resolves range using the phase differences between reconstructed two-tone holograms is presented. This method gives very high range resolution in a very narrow frequency band. Experiments showed that the technique can produce recognizable 3-D images of objects at comparatively short distances in free space. >
H. Kitayoshi +4 more
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Commercial CW Doppler radar design and application
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA), 2017In this paper CW Doppler radar design and application are presented. The impact of a wide antenna main lobe on the received signal is demonstrated, based on the developed received signal model. Then a design of an active antialiasing filter and a signal processing technique using an OS-CFAR algorithm are describe.
Michal Reznicek, Pavel Bezousek
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