Results 261 to 270 of about 779,702 (326)
Some of the next articles are maybe not open access.
Non-contact Beat-to-beat Blood Pressure Measurement Using Continuous Wave Doppler Radar
Intelligent Memory Systems, 2018Ahstract-This paper presents a non-contact beat-to-beat blood pressure (BP) measurement system using a continuous wave (CW) Doppler radar. The tiny displacement on body surface induced by the central aortic artery is acquired by a digital-IF CW Doppler ...
Heng Zhao +5 more
semanticscholar +1 more source
2012
In this chapter the Doppler effect, Doppler discrimination, platform motion compensation, Doppler blindness, continuous wave radar, and application to pulsed radar are discussed.
openaire +1 more source
In this chapter the Doppler effect, Doppler discrimination, platform motion compensation, Doppler blindness, continuous wave radar, and application to pulsed radar are discussed.
openaire +1 more source
Canada’s Operational Doppler Radar
1990The King Weather Radar Research Station of the Atmospheric Environment Service (AES), located north of the metropolitan Toronto area in Southern Ontario, is a component of the Canadian weather service radar network. The only Doppler weather radar in the country, it was instituted as part of the research program of the Cloud Physics Division of AES and ...
T. R. Nichols, P. I. Joe, C. L. Crozier
openaire +1 more source
2004
A Doppler radar is defined by as 'a radar which uses the Doppler effect to determine the radial component of relative radar target velocity or to select targets having particular radial velocities.' A pulse-Doppler (or pulsed-Doppler) (PD) radar is defined as 'a Doppler radar that uses pulsed transmissions.' PD radar is used extensively for detecting ...
openaire +1 more source
A Doppler radar is defined by as 'a radar which uses the Doppler effect to determine the radial component of relative radar target velocity or to select targets having particular radial velocities.' A pulse-Doppler (or pulsed-Doppler) (PD) radar is defined as 'a Doppler radar that uses pulsed transmissions.' PD radar is used extensively for detecting ...
openaire +1 more source
DC coupled Doppler radar physiological monitor
2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2011One of the challenges in Doppler radar systems for physiological monitoring is a large DC offset in baseband outputs. Typically, AC coupling is used to eliminate this DC offset. Since the physiological signals of interest include frequency content near DC, it is not desirable to simply use AC coupling on the radar outputs. While AC coupling effectively
Xi, Zhao +3 more
openaire +2 more sources
Polarimetric Doppler Weather Radar
2001This 2001 book provides a detailed introduction to the principles of Doppler and polarimetric radar, focusing in particular on their use in the analysis of weather systems. The design features and operation of practical radar systems are highlighted throughout the book in order to illustrate important theoretical foundations.
V. N. Bringi, V. Chandrasekar
openaire +1 more source
IRE Transactions on Military Electronics, 1961
Doppler radars are employed for the detection of moving targets whose radar echo area is much smaller than the ground clutter return. Moving targets are separated from clutter on a frequency basis by utilizing the Doppler phenomenon. Continuous-wave Doppler radars have a practical maximum-range capability because the leak-through between the ...
L. P. Goetz, J. D. Albright
openaire +1 more source
Doppler radars are employed for the detection of moving targets whose radar echo area is much smaller than the ground clutter return. Moving targets are separated from clutter on a frequency basis by utilizing the Doppler phenomenon. Continuous-wave Doppler radars have a practical maximum-range capability because the leak-through between the ...
L. P. Goetz, J. D. Albright
openaire +1 more source
A processor for pulse-doppler radar
IEEE Transactions on Electron Devices, 1976Methods are presented for combining charge-coupled device (CCD) and surface acoustic wave (SAW) techniques to advantage for processing coherent radar signals in order to extract target range and velocity information. Experiments have validated a scheme of combined discrete CCD's to form an analog store with orthogonal input and output sequencing ...
J.B.G. Roberts +3 more
openaire +1 more source
Multistatic radar micro-Doppler
2020This chapter reviews how multistatic radar sensor networks can be utilised to sense a series of different moving targets to extract their micro-Doppler (μD) signatures and use these for classification purposes. The field of radar has advanced significantly since its inception in the early twentieth century.
Matthew Ritchie +2 more
openaire +1 more source
International Journal of Electronics, 1969
A new type of pulse doppler radar has been described, which depends on three pulses transmitted in sequence at three different mutually coherent frequencies. The cancellation of stationary targets and signal processing for extraction of moving targets is by mutual comparison of the echo pulses.
openaire +1 more source
A new type of pulse doppler radar has been described, which depends on three pulses transmitted in sequence at three different mutually coherent frequencies. The cancellation of stationary targets and signal processing for extraction of moving targets is by mutual comparison of the echo pulses.
openaire +1 more source