Results 251 to 260 of about 64,303 (305)

Pulse-Doppler correlation receiver

SPIE Proceedings, 1994
We present the architectural and functional details involved in the development of a hybrid optical/digital processor for use in High Resolution Radar applications. Specifically, we describe within the context of a general radar receiver, the use of an advanced analog (optical) front end to perform the computationally intensive correlation processing ...
Peter A. Wasilousky, Dennis R. Pape
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Doppler invariant pulse compressors

Journal of the Franklin Institute, 1980
Abstract A pulse compressor is utilized in many aspects of signal processing. Compression is usually accomplished by using special matched-filter-signal pairs. An alternative method takes advantage of the fact that any linear dynamic system can be excited to produce a time-limited output.
Dov Hazony, Yehonathan Hazony
openaire   +1 more source

Pulse-Doppler UWB Radar

2006 3rd International Conference on Ultrawideband and Ultrashort Impulse Signals, 2006
The Paper contains measurement results of moving targets by pulse-Doppler UWB radar. The description of a radar, principle of operation and technical specification are presented. Conditions and results of measurements are described. Feature of the presented measurements: Doppler signals of linear moving targets whose linear sizes exceed resolution of ...
A. Chernenko, E. Ziganshin
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Pulsed Doppler probe

The Journal of the Acoustical Society of America, 1997
A pulsed Doppler probe 10 for monitoring blood flow within a blood vessel 12 includes a sheath 17 and a plurality of electrically conductive wires 26 extending through the sheath 17. The wires 26 have distal ends 28 to which an ultrasonic transducer 18 is operatively connected.
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Ultrasound Pulsed Doppler Velocimetry

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1992
Among the numerous methods used for investigating the cardiovascular system, the Doppler technique is of particular importance position. This is due to the non invasive (transcutaneous probes) or low invasive (transoesophagcal probes) approach it provides.
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Pulse-Doppler Radar

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 ...
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Pulse Doppler Ambiguity Resolution

IEEE Transactions on Aerospace and Electronic Systems, 1972
A mathematical algorithm using the method of invariant imbedding is developed which generates a best £2 estimate of range and range rate from pulse Doppler data.
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Ultrasound pulse Doppler tomography

IEEE 1988 Ultrasonics Symposium Proceedings., 2003
It is shown that pulse Doppler CT (computerized tomography) leads to more complete flow images than conventional flow imaging does; not only forward and reverse flow directions but also transverse directions are registered and imaged using a suitable color code.
J.K. Schmolke, H. Emert
openaire   +1 more source

Airborne Pulse-Doppler Radar

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
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Pulsed Doppler frequency and carotid stenosis

Journal of Surgical Research, 1987
Two hundred and forty-two internal carotid arteries (ICA) were evaluated by independently interpreted arteriography and pulsed Doppler spectrum analysis using ultrasonic arteriography to evaluate the ability of peak systolic frequency (PSF) to predict the degree of internal carotid stenosis.
W M, Blackshear, K B, Seifert, S, Lamb, V S, Kollipara, F R, Murtagh, C P, Shah, M S, Farber   +6 more
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