Relevant bibliographies by topics / Spectral Doppler measurements

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Spectral Doppler measurements'

Author: Grafiati
Published: 10 March 2023
Last updated: 31 July 2025

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Journal articles on the topic "Spectral Doppler measurements"

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Moisseev, Dmitri N., and V. Chandrasekar. "Nonparametric Estimation of Raindrop Size Distributions from Dual-Polarization Radar Spectral Observations." Journal of Atmospheric and Oceanic Technology 24, no. 6 (2007): 1008–18. http://dx.doi.org/10.1175/jtech2024.1.

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This paper presents a method to retrieve raindrop size distributions (DSD) from slant profile dual-polarization Doppler spectra observations. It is shown that using radar measurements taken at a high elevation angle raindrop size distributions can be retrieved without making an assumption on the form of a DSD. In this paper it is shown that drop size distributions can be retrieved from Doppler power spectra by compensating for the effect of spectrum broadening and mean velocity shift. To accomplish that, spectrum deconvolution is used where the spectral broadening kernel width and wind velocit
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Панчук, В. Е., В. Л. Афанасьев, А. Г. Пельменев, М. В. Юшкин, Г. С. Жуклевич, and С. В. Ларионов. "Doppler measurements of stars: evolution of accuracy and some perspectives." Научные труды Института астрономии РАН, no. 4 (December 31, 2021): 129–35. http://dx.doi.org/10.51194/inasan.2021.6.4.006.

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Перечислены основные этапы повышения точности доплеровских измерений спектров звезд и связанные с этимтехнологические прорывы. Упоминаются методы интерференционной спектроскопии, ориентированные как на сни-жение стоимости массовых доплеровских измерений, так и на увеличение спектрального разрешения до значений,превосходящих спектральное разрешение согласованного спектрографа высокого разрешения. The main stages of increasing the accuracy of Doppler measurements of stellar spectra and related technological break-throughs are listed. Methods of interference spectroscopy are mentioned, which are
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Carlos, A. Gómez-Vega, A. Gutiérrez Carlos, J. Jaime-Rodríguez José, et al. "Doppler spectrum measurements of vehicular radio channels using a narrowband sounder." Revista Facultad de Ingeniería, Universidad de Antioquia, no. 93 (April 26, 2019): 32–40. https://doi.org/10.17533/10.17533/udea.redin.20190405.

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This paper describes the implementation of a narrowband sounder for Doppler power spectrum (DPS) measurements of vehicular communication channels. The narrowband channel sounder is implemented using general purpose equipment, making such measurement platform easy to replicate for didactic and research purposes. To demonstrate the practical value of this framework, a measurement campaign was conducted to obtain empirical information about the spectral characteristics of vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) multipath radio channels in the 700 MHz band. The collected data
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Gómez Vega, Carlos A., Carlos A. Gutiérrez, Jose J. Jaime Rodriguez, et al. "Doppler spectrum measurements of vehicular radio channels using a narrowband sounder." Revista Facultad de Ingeniería Universidad de Antioquia, no. 93 (August 23, 2019): 32–40. http://dx.doi.org/10.17533/10.17533/udea.redin.20190405.

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This paper describes the implementation of a narrowband sounder for Doppler power spectrum (DPS) measurements of vehicular communication channels. The narrowband channel sounder is implemented using general purpose equipment, making such measurement platform easy to replicate for didactic and research purposes. To demonstrate the practical value of this framework, a measurement campaign was conducted to obtain empirical information about the spectral characteristics of vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) multipath radio channels in the 700 MHz band. The collected data
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Cifuentes-Lorenzen, Alejandro, James B. Edson, Christopher J. Zappa, and Ludovic Bariteau. "A Multisensor Comparison of Ocean Wave Frequency Spectra from a Research Vessel during the Southern Ocean Gas Exchange Experiment." Journal of Atmospheric and Oceanic Technology 30, no. 12 (2013): 2907–25. http://dx.doi.org/10.1175/jtech-d-12-00181.1.

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Abstract Obtaining accurate measurements of wave statistics from research vessels remains a challenge due to the platform motion. One principal correction is the removal of ship heave and Doppler effects from point measurements. Here, open-ocean wave measurements were collected using a laser altimeter, a Doppler radar microwave sensor, a radar-based system, and inertial measurement units. Multiple instruments were deployed to capture the low- and high-frequency sea surface displacements. Doppler and motion correction algorithms were applied to obtain a full 1D (0.035–1.3 ± 0.2 Hz) wave spectru
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Chaxel, Y., E. M. Griffin, and N. P. Meredith. "Spectral analysis techniques for doppler lidar measurements." Advances in Space Research 21, no. 10 (1998): 1441–44. http://dx.doi.org/10.1016/s0273-1177(97)00657-1.

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Wang, Yadong, Tian-You Yu, Alexander V. Ryzhkov, and Matthew R. Kumjian. "Application of Spectral Polarimetry to a Hailstorm at Low Elevation Angle." Journal of Atmospheric and Oceanic Technology 36, no. 4 (2019): 567–83. http://dx.doi.org/10.1175/jtech-d-18-0115.1.

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AbstractSpectral polarimetry has the potential to be used to study microphysical properties in relation to the dynamics within a radar resolution volume by combining Doppler and polarimetric measurements. The past studies of spectral polarimetry have focused on using radar measurements from higher elevation angles, where both the size sorting from the hydrometeors’ terminal velocities and polarimetric characteristics are maintained. In this work, spectral polarimetry is applied to data from the 0° elevation angle, where polarimetric properties are maximized. Radar data collected by the C-band
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Mattesini, Paolo, Alessandro Ramalli, Lorena Petrusca, Olivier Basset, Herve Liebgott, and Piero Tortoli. "Spectral Doppler Measurements With 2-D Sparse Arrays." IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 67, no. 2 (2020): 278–85. http://dx.doi.org/10.1109/tuffc.2019.2944090.

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Anandan, V. K., C. J. Pan, T. Rajalakshmi, and G. Ramachandra Reddy. "Multitaper spectral analysis of atmospheric radar signals." Annales Geophysicae 22, no. 11 (2004): 3995–4003. http://dx.doi.org/10.5194/angeo-22-3995-2004.

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Abstract. Multitaper spectral analysis using sinusoidal taper has been carried out on the backscattered signals received from the troposphere and lower stratosphere by the Gadanki Mesosphere-Stratosphere-Troposphere (MST) radar under various conditions of the signal-to-noise ratio. Comparison of study is made with sinusoidal taper of the order of three and single tapers of Hanning and rectangular tapers, to understand the relative merits of processing under the scheme. Power spectra plots show that echoes are better identified in the case of multitaper estimation, especially in the region of a
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Liu, Liping, and Jiafeng Zheng. "Algorithms for Doppler Spectral Density Data Quality Control and Merging for the Ka-Band Solid-State Transmitter Cloud Radar." Remote Sensing 11, no. 2 (2019): 209. http://dx.doi.org/10.3390/rs11020209.

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The Chinese Ka-band solid-state transmitter cloud radar (CR) can operate in three different work modes with different pulse widths and coherent integration and non-coherent integration numbers to meet the requirement for long-term cloud measurements. The CR was used to observe cloud and precipitation data in southern China in 2016. In order to resolve the data quality problems caused by coherent integration and pulse compression, which are used to detect weak cloud in the cloud radar, this study focuses on analyzing the consistencies of reflectivity spectra using the three modes and the influe
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Dissertations / Theses on the topic "Spectral Doppler measurements"

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Brooks, Donald Ray. "Development of Specialized Laser Doppler Velocimeters for High Resolution Flow Profile and Turbulence Spectral Measurements." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/78089.

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Fluid dynamicists are always in need of innovative instruments for flow velocity measurements. An ideal instrument would be non-intrusive, have a very fine spatial resolution as well as a very fine temporal resolution, be able to measure three-components of velocity, and be compact. Through recent advancements, laser Doppler velocimetry can now meet all of those requirements making it an important part of aerodynamicist's research toolbox. The first paper presented in this manuscript style thesis explains the development of an advanced three-velocity component, spatially-resolving laser-Dop
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David, Jean-Yves. "Modern spectral analysis techniques for blood flow velocity and spectral measurements with a 20 MHZ pulsed doppler ultrasound catheter." Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/17791.

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Walther, Julia, and Edmund Koch. "Lateral resonant Doppler flow measurement by spectral domain optical coherence tomography." SPIE, 2017. https://tud.qucosa.de/id/qucosa%3A34981.

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In spectral domain optical coherence tomography (SD-OCT), any transverse motion component of a detected obliquely moving sample results in a nonlinear relationship between the Doppler phase shift and the axial sample velocity restricting phase-resolved Doppler OCT. To circumvent the limitation, we propose the lateral resonant Doppler flow quantification in spectral domain OCT, where the scanner movement velocity is matched to the transverse velocity component of the sample motion.
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Sundaram, Preethi. "New Results For Characterization Of Indoor Channels In Two Ism Bands (900-928 Mhz And 2.4-2.5 Ghz)." Ohio University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1140462634.

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Jouette, Christian. "Conception d'un appareil de mesure du débit sanguin tissulaire par effet doppler optique : choix des paramètres d'échantillonnage et d'analyse spectrale, et détermination d'un indice débit métrique." Nancy 1, 1994. http://www.theses.fr/1994NAN10106.

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La mesure du débit sanguin tissulaire par effet doppler optique est une idée séduisante. L'utilisation d'une source laser, par la cohérence spatiale et géométrique qu'elle offre, en simplifie la réalisation pratique. La vitesse des différentes composantes, notamment les hématies, n'est pas uniforme. Il en résulte donc une distribution spectrale image de cette répartition. De plus, l'environnement du faisceau laser étant constitué par de la matière vivante, de nombreux paramètres influencent les résultats. Dans un premier temps, nous décrivons l'évolution des doppler-lasers, et nous exposons le
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Lee, Christopher Francis. "Use of wind profilers to quantify atmospheric turbulence." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/use-of-wind-profilers-to-quantify-atmospheric-turbulence(d6a12ed2-533a-4dae-9f0d-747bc0b4c725).html.

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Doppler radar wind profilers are already widely used to measure atmospheric winds throughout the free troposphere and stratosphere. Several methods have been developed to quantify atmospheric turbulence with such radars, but to date they have remained largely un-tested; this thesis presents the first comprehensive validation of one such method. Conventional in-situ measurements of turbulence have been concentrated in the surface layer, with some aircraft and balloon platforms measuring at higher altitudes on a case study basis. Radars offer the opportunity to measure turbulence near continuous
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Rossi, Stefano, and Piero Tortoli. "Development and validation of novel approaches for real-time ultrasound vector velocity measurements." Doctoral thesis, 2021. http://hdl.handle.net/2158/1239650.

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Ultrasound imaging techniques have become increasingly successful in the medical field as they provide relatively low cost and totally safe diagnosis. Doppler methods focus on blood flow for the diagnosis and follow-up of cardiovascular diseases. First Doppler methods only measured the axial component of the motion. More recently, advanced methods have solved this problem, by estimating two or even all three velocity components. In this context, high frame rate (HFR) imaging techniques, based on the transmission of plane waves (PW), lead to the reconstruction of 2-D and 3-D vector maps of bloo
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Mattesini, Paolo, Piero Tortoli, Enrico Boni, Hervé Liebgott, and Olivier Basset. "Development of methods and electronic circuits for ultrasound imaging based on innovative probes." Doctoral thesis, 2020. http://hdl.handle.net/2158/1186186.

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I sistemi di imaging ad ultrasuoni (US), sebbene siano stati oggetto di intense indagini da parte di molti gruppi di ricerca in tutto il mondo, non hanno ancora raggiunto la piena maturità. Le sonde ad ultrasuoni, in particolare, hanno ampi margini di miglioramento, non solo in termini di materiali e configurazione degli elementi, ma anche di modalità di eccitazione. Il mio lavoro di dottorato è stato impegnato nello sviluppo di circuiti elettronici e metodi per l'imaging ad ultrasuoni basati su sonde innovative. In primo luogo, ho sviluppato i circuiti elettronici necessari per rendere comp
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Books on the topic "Spectral Doppler measurements"

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Gossard, Earl E. Automated editing of spectra from wind profilers. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Environmental Technology Laboratory, 1997.

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Woodahl, Brian Arvid. On obtaining auto-spectral-density from non-uniformly sampled data using signal reconstruction. 1993.

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Kasprzak, Jaroslaw D., Anita Sadeghpour, and Ruxandra Jurcut. Doppler echocardiography. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198726012.003.0003.

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Doppler examination is an integral part of the echocardiogram. Current systems are equipped with spectral Doppler in continuous wave mode (offering measurements of high velocities with limited spatial specificity due to integration of signal along the scan line), pulsed wave mode (high spatial specificity with maximal recordable velocity reduced by the Nyquist limit), and colour Doppler flow mapping (allowing rapid identification of flow pattern within a cross-sectional B-mode sector). Tissue Doppler echocardiography emerged as a basic tool for sampling regional myocardial velocities, in pulse
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Choi, Seong Jong. Parametric spectral analysis of ultrasound doppler signal. 1992.

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Book chapters on the topic "Spectral Doppler measurements"

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Venkatram, Prabhakar. "Doppler Study of the Heart (Spectral) in Different Pathological Conditions and Measurements." In Heart Diseases and Echocardiogram. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-59246-1_50.

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Matera, Riccardo, David Vilkomerson, and Stefano Ricci. "Ultrasound Measurement of the Peak Blood Flow Based on a Doppler Spectrum Model." In Lecture Notes in Electrical Engineering. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-11973-7_45.

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Bao, S. L., F. Z. Huang, J. Q. Liu, et al. "Measurement of 7Li(n,n′γ) (478 keV) Inelastic Angular Distribution Derived via the Shape Analysis of the Doppler Shifted γ-Ray Spectrum (DSM) at 14.9 MeV." In Nuclear Data for Science and Technology. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-58113-7_92.

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Sidebotham, David, Alan Merry, Malcolm Legget, and Gavin Wright. "Quantitative Doppler echocardiography." In Practical Perioperative Transoesophageal Echocardiography. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198759089.003.0003.

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Quantitative echocardiography refers to using spectral Doppler measurements of blood velocity, in combination with 2D imaging, to obtain calculated values for flow (e.g. stroke volume, regurgitant volume), area (stenotic valve area, regurgitant orifice area), and pressure (e.g. pulmonary artery pressure, transvalvular gradient). Relevant formulae used by the echocardiography machine software for calculating these parameters are provided. Physical phenomena, such jets, the Venturi effect, and the Coanda effect, are explained, along with applications of the continuity principle, the Bernoulli eq
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Gray, P. H., E. A. Griffin, J. E. Drumm, D. E. Fitzgerald, and N. M. Duignan. "Doppler spectral analysis of cerebral blood flow in preterm infants and the relationship to intraventricular haemorrhage." In Neonatal Physiological Measurements. Elsevier, 1986. http://dx.doi.org/10.1016/b978-0-407-00451-1.50019-9.

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Binder, Thomas. "Transthoracic echocardiography and the standard examination of specific cardiac structures." In ESC CardioMed, edited by Frank Flachskampf. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198784906.003.0085.

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Transthoracic echocardiography is by far the most frequently used imaging procedure in cardiology. Adherence to a standard protocol is essential for a comprehensive evaluation of cardiac structures and function. The protocol must include the minimal requirements outlined in this chapter. Two-dimensional imaging is performed from specific windows, such as the parasternal, apical, and subcostal ones. A number of standard cut planes are needed for a full understanding of the entire heart. M-mode, spectral, and colour Doppler are used to obtain additional anatomical and functional information. Adv
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Goody, R. M., and Y. L. Yung. "Band Models." In Atmospheric Radiation. Oxford University Press, 1989. http://dx.doi.org/10.1093/oso/9780195051346.003.0006.

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Radiative heating calculations in the atmosphere involve four distinguishable scales of frequency. First, there is the comparatively slow variation with frequency of the Planck function and its derivative with respect to temperature. About one-half of the radiation from a black body at terrestrial temperatures lies in a wave number range of 500 cm-1. The second scale is that of the unresolved contour of a band. For atmospheric molecules other than water vapor, the Planck function is effectively constant over a single band; water vapor bands must be divided into sections of the order of 50 cm-1
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Huang, Stephen. "Basic Doppler principles." In Oxford Textbook of Advanced Critical Care Echocardiography, edited by Anthony McLean, Stephen Huang, and Andrew Hilton. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198749288.003.0001.

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Basic two-dimensional echocardiography alone is inadequate for advanced diagnosis and treatment monitoring in critically ill patients because of haemodynamic complexities. To cope with such demands, a critical care physician will also need to be competent in Doppler echocardiography, which provides accurate measurements of blood flows. Experienced echocardiographers are able to draw inference about the cardiac function, intracardiac and intravascular pressures, and other abnormalities from the Doppler flow spectra. Doppler echocardiography also provides objective measurements that can be used
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Huang, Stephen. "Common Doppler artefacts and pitfalls." In Oxford Textbook of Advanced Critical Care Echocardiography, edited by Anthony McLean, Stephen Huang, and Andrew Hilton. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198749288.003.0002.

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Artefacts are spurious signals that do not represent true signals or physical structures. It is important to differentiate artefacts from genuine signals in ultrasound studies as this may help avoid misinterpretations and measurement errors. The nature of many Doppler ultrasound artefacts is similar to 2D echocardiography artefacts, including inappropriate gain settings, mirror artefacts, and reverberation artefacts. However, as Doppler ultrasound is used to detect blood flow and myocardial velocity, it is susceptible to insonation (Doppler) angle error, aliasing, and other velocity-related ar
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Karadimas, Petros. "Stochastic Modeling of Narrowband Fading Channels with Three Dimensional Diffuse Scattering." In Handbook of Research on Heterogeneous Next Generation Networking. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-108-7.ch016.

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This chapter studies a composite stochastic model, in which the diffuse component arises from three dimensional (3-D) multipath scattering. That case occurs especially in dense scattering environments, in which the tall obstacles cause arrival of multipath power in the elevation plane, besides that arriving in the azimuth one. Also the multipath components are assumed to arrive at the mobile receiver in specific angular sectors at the azimuth receiver’s plane. The last is physically justified by multipath power blocking due to the channel obstacles (shadow fading), or/and lack of scattering ob
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Conference papers on the topic "Spectral Doppler measurements"

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Hromisin, Scott, Nicholas Rudenko, Leighton Myers, and Dennis McLaughlin. "Laser Doppler Velocimeter Measurements in the Ground Interaction Region of an Impinging Scale Model Jet." In Vertical Flight Society 71st Annual Forum & Technology Display. The Vertical Flight Society, 2015. http://dx.doi.org/10.4050/f-0071-2015-10508.

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Two-component Laser Doppler Velocimetry measurements were made in the jet plume, impingement region, and outwash region of a scale model jet impinging on a ground plane. The model used for this study is representative of a generic military-style STOVL aircraft in hover. A 13.5mm contoured de Laval nozzle was operated at its design nozzle pressure ratio of 2.93. Velocity measurements were made for ground plate to model separations of 22.9, 12, and 6Dr. Mean velocity measurements in the jet plume and wall jet were compared to previous pitot rake measurements. In general there was good agreement
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Mattesini, Paolo, Alessandro Ramalli, Emmanuel Roux, et al. "Spectral Doppler Measurements with 2-D Sparse Arrays." In 2018 IEEE International Ultrasonics Symposium (IUS). IEEE, 2018. http://dx.doi.org/10.1109/ultsym.2018.8579909.

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Eloranta, E. W., and P. Piironen. "High Spectral Resolution Lidar Measurements of Extinction and Particle Size in Clouds." In Optical Remote Sensing of the Atmosphere. Optica Publishing Group, 1995. http://dx.doi.org/10.1364/orsa.1995.wa1.

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The spectral width of light backscattered from molecules is increased due to Doppler shifts caused by the thermal motion of the molecules. The thermal motion of aerosol and cloud particles is much slower and the backscatter spectrum is nearly unchanged. The University of Wisconsin High Spectral Resolution Lidar (HSRL) measures optical properties of the atmosphere by separating the Doppler-broadened molecular backscatter return from the unbroadened aerosol return1. The molecular backscatter cross section can be calculated from the molecular density profile. Thus, observing the magnitude of the
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Kathpalia, Aditi, Yucel Karabiyik, Bente Simensen, et al. "A robust Doppler spectral envelope detection technique for automated blood flow measurements." In 2015 IEEE International Ultrasonics Symposium (IUS). IEEE, 2015. http://dx.doi.org/10.1109/ultsym.2015.0419.

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Fuchs, J., T. Lamont-Smith, and M. P. Tulin. "Laboratory measurements of LGA Doppler spectral components and their physical sources unveiled." In IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174). IEEE, 1998. http://dx.doi.org/10.1109/igarss.1998.703811.

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Gentry, Bruce M., and C. Laurence Korb. "Doppler velocimetry with sub-meter-per-second accuracy using the edge technique." In OSA Annual Meeting. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.tup3.

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The edge technique is a powerful new method for the measurement of small frequency shifts. When applied to the measurement of Doppler shifts, the edge technique can be used to obtain high accuracy remote measurements of instantaneous velocity. In the edge technique the laser frequency is located on the edge of the spectral response function of a high resolution optical filter. Because of the steep slope of the edge, very small frequency shifts cause large changes in filter transmission. The Doppler shift is determined from a differential measurement of the frequency of the unshifted laser beam
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Grund, C. J., and E. W. Eloranta. "High Spectral Resolution Lidar Measurements of Cirrus Cloud Optical Properties." In Laser and Optical Remote Sensing: Instrumentation and Techniques. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/lors.1987.mc9.

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Lidar backscatter signals are generated by scattering from both molecules and particles. The spectral distribution of light scattered by molecules is Doppler-broadened by rapid, thermally induced, molecular motions. Light scattered by aerosols and cirrus particles is essentially unshifted because of the relatively slow Brownian motion of particles. Using this difference, the High Spectral Resolution Lidar (HSRL)1,2 interferometrically separates particulate from molecular backscatter. By using the distribution of molecular scattering as a known target, the HSRL achieves unambiguous, calibrated
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Martinsen, Robert J., Andrew J. Jankevics, Charles P. Plum та John H. Flint. "Clear Air Turbulence Detection with a 2 μm Lidar Employing Velocity Width Processing". У Optical Remote Sensing of the Atmosphere. Optica Publishing Group, 1993. http://dx.doi.org/10.1364/orsa.1993.tud.20.

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We describe in this paper results of a system study for an airborne lidar system that makes real-time, range-resolved measurements of clear air turbulence (CAT) to several kilometers forward of an aircraft's projected flight path. Exploiting the width of the IF signal Doppler spectrum (σf) is central to the system concept. Since broadening of the Doppler spectrum beyond the transform limit is a function of the mixture of velocities (velocity width, σv) in the pulse scattering volume, any combination of shear and/or turbulence in the flight path is immediately revealed by the broadened spectra.
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Johnson, Steve. "Laboratory Measurements of the Performance of a Poly Pulse Pair Signal Processor." In Coherent Laser Radar. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/clr.1987.tua8.

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A signal processor has been developed to perform estimations of the parameters associated with the signal return from a coherent CO2 pulsed Doppler lidar. The processor is based on a variation of the pulse pair technique utilized in conventional Doppler radar signal processing. The variation, termed poly-pulse pair processing, was developed in an attempt to provide an optimized method of estimating the mean frequency, intensity and spectral width associated with the lidar return signal. In order to ascertain the performance of the processor, a test program was undertaken in which simulated lid
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Di Rosa, Michael D., and Ronald K. Hanson. "Continuous-wave laser strategy of probing NO at 220 nm for flow measurements." In OSA Annual Meeting. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.tucc1.

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Nitric oxide is a species intrinsic to hypersonic flight, and the capability of nonintrusively monitoring gasdynamic properties of NO could prove useful in experimental studies of wings, inlets or combustors. Accessing both the (0,0) and (1,0) band of NO A ← X with a cw ring dye laser is now possible due to recent wavelength extensions to 210 nm. Furthermore, modifying a ring dye laser for rapid-tuning1 allows scanning the laser frequency 80 GHz repetitively at a rate of 4 kHz. This paper investigates the use of rapid-tuning in single-point fluorescence detection NO A ← X transitions for simul
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Reports on the topic "Spectral Doppler measurements"

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Ultrasound Volume Blood Flow, Consensus QIBA Profile. Chair J. Brian Fowlkes, James Jago, and Oliver Kripfgans. American Institute of Ultrasound in Medicine (AIUM)/Radiological Society of North America (RSNA)/Quantitative Imaging Biomarkers Alliance (QIBA), 2024. https://doi.org/10.1148/qiba/20240105.

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A QIBA Profile is an implementation guide to generate a biomarker with an effective level of performance, mostly by reducing variability and bias in the measurement. The expected performance is expressed as Claims (Section 1.2). To achieve those claims, Actors (Manufacturers/Vendors/Field Service Engineers, Sonographers/Technologists, Physicians, Physicist/Clinical Engineer/QA manager, and Image Analysis Tools) must meet the Checklist Requirements (Section 3) covering Product Validation, Staff Qualification, Pre-delivery, Installation, Periodic QA, Subject Handling, Image Data Acquisition, Ima
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Naguib, Ahmed M. A Doppler Sensor Array for High-Resolution Measurements of the Wavenumber-Frequency Spectrum of the Turbulent Wall Pressure at High Reynold Numbers. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada417457.

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3

Tire Experimental Characterization Using Contactless Measurement Methods. SAE International, 2021. http://dx.doi.org/10.4271/2021-01-1114.

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In the frame of automotive Noise Vibration and Harshness (NVH) evaluation, inner cabin noise is among the most important indicators. The main noise contributors can be identified in engine, suspensions, tires, powertrain, brake system, etc. With the advent of E-vehicles and the consequent absence of the Internal Combustion Engine (ICE), tire/road noise has gained more importance, particularly at mid-speed driving and in the spectrum up to 300 Hz. At the state of the art, the identification and characterization of Noise and Vibration sources rely on pointwise sensors (microphones, accelerometer
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