Results 161 to 170 of about 2,419 (211)

35 GHz FM-CW radar modules

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, U. Akpinar, P.J.F. Swart, A. John, R.H. Jansen   +4 more
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A New Display for FM/CW Radars

IRE Transactions on Military Electronics, 1961
One of the limitations of FM/CW radars, often quoted in the literature, is in their inability to handle multiple targets. Several variations of a comparatively simple Range/Range Rate Display, capable of handling and resolving a large number of targets when used in conjunction with an FM/CW radar, are presented.
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New developments in FM-CW radar sounding

Boundary-Layer Meteorology, 1973
Simultaneous lidar and FM-CW (frequency modulated-continuous wave) radar observations are presented and both common and different features observed with the two remote sensors are described. Among the common features are Kelvin-Helmholtz (K-H) waves and turbulent structures.
J. H. Richter, D. R. Jensen, R. A. Pappert, V. R. Noonkester   +3 more
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An acoustic FM–CW radar for atmospheric sounding

The Journal of the Acoustical Society of America, 1979
A prototype FM–CW radar for atmospheric sounding and some of its applications are described. The prototype generates a signal whose frequency increases linearly from 1830 to 2160 Hz during a time interval of 10 s, the excitation being at intervals of 20 s.
G. E. Perona, R. U. Pisani
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VCO nonlinearity correction scheme for a wideband FM-CW radar

Microwave and Optical Technology Letters, 2000
When an FM–CW radar is used to measure the target distance, the nonlinear relationship between the VCO control voltage and the output frequency has an adverse effect on the measurement accuracy. This paper presents a new technique to compensate for the VCO nonlinearity using a phase correction function derived from a calibration signal.
Hyung-Gun Park, Byungwook Kim, Young-Soo Kim   +2 more
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Short Pulse, FM/CW and Chirp Radars

1976
As a starting point in its discussions on the effect of atmospheric factors on short pulse, FM/CW and chirp radars the working group assigned the same fractional bandwidth and mean power to each type. This was necessary to make them equivalent and permit a valid comparison to be made.
R. G. Taylor, A. Alongi, J. T. Hall, N. Klint Hansen, D. Thomson, E. Topuz, A. T. Waterman   +6 more
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Human body detection in wet snowpack by an FM-CW radar

IEEE Transactions on Geoscience and Remote Sensing, 1992
An FM-CW radar system was applied to detect a human body buried in a very wet snowpack. This radar uses the L-band microwave frequency with a maximum output power of 100 mW, and utilizes digital signal processing techniques. Field experiments were carried out to detect and map a human body embedded at a depth of 125 cm in a natural snowpack.
Yoshio Yamaguchi, Masashi Mitsumoto, Masakazu Sengoku, Takeo Abe   +3 more
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The use of low cost FM-CW radar sensors in navigation

Microprocessors and Microsystems, 1998
Abstract Navigation of Autonomous Guided Vehicles (AGVs) has traditionally been accomplished by means of fixed path navigation systems. The trend towards the use of such vehicles in unstructured external environments has led to a requirement for increasingly sophisticated sensory inputs.
Robert M. Parkin, B. Tao, Michael R. Jackson   +2 more
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Coherent Decomposition of Fully Polarimetric FM-CW Radar Data

IEICE Transactions on Communications, 2008
This paper presents a coherent decomposition scheme for polarimetric SAR data. Coherent decomposition means the decomposition is applied to a single or a few scattering matrix data. Based on the scattering matrix acquired with an FM-CW polarimetric SAR system, we have devised a simple decomposition technique using the coherency matrix for the purpose ...
Jun Nakamura, Kazuyasu Aoyama, Muneyuki Ikarashi, Yoshio Yamaguchi, Hiroyoshi Yamada   +4 more
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Detection of objects buried in wet snowpack by an FM-CW radar

IEEE Transactions on Geoscience and Remote Sensing, 1991
A real-aperture FM-CW radar system was developed for the detection of objects buried in heavily wet snowpack. This radar uses the L-band microwave frequency with a maximum output power of 100 mW and utilizes digital signal processing techniques. A laboratory simulation and two field experiments were carried out to detect and map various objects ...
Yoshio Yamaguchi, Yasuichi Maruyama, Atsushi Kawakami, Masakazu Sengoku, Takeo Abe   +4 more
openaire   +1 more source