Academic literature on the topic 'Delay-Doppler'
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Journal articles on the topic "Delay-Doppler"
Raney, R. K. "The delay/Doppler radar altimeter." IEEE Transactions on Geoscience and Remote Sensing 36, no. 5 (1998): 1578–88. http://dx.doi.org/10.1109/36.718861.
Full textHarmon, John K., Raymond E. Arvidson, Edward A. Guinness, Bruce A. Campbell, and Martin A. Slade. "Mars mapping with delay-Doppler radar." Journal of Geophysical Research: Planets 104, E6 (June 1, 1999): 14065–89. http://dx.doi.org/10.1029/1998je900042.
Full textGogolev, I. V. "Doppler Stretch and Delay Statistical Performance Comparison for Wideband and Narrowband Signal Model." Journal of the Russian Universities. Radioelectronics, no. 1 (April 17, 2018): 13–18. http://dx.doi.org/10.32603//1993-8985-2018-21-1-13-18.
Full textMcMillan, Malcolm, Alan Muir, Andrew Shepherd, Roger Escolà, Mònica Roca, Jérémie Aublanc, Pierre Thibaut, Marco Restano, Américo Ambrozio, and Jérôme Benveniste. "Sentinel-3 Delay-Doppler altimetry over Antarctica." Cryosphere 13, no. 2 (March 1, 2019): 709–22. http://dx.doi.org/10.5194/tc-13-709-2019.
Full textJiann-Ching Guey and M. R. Bell. "Diversity waveform sets for delay-Doppler imaging." IEEE Transactions on Information Theory 44, no. 4 (July 1998): 1504–22. http://dx.doi.org/10.1109/18.681325.
Full textZhang, Yan, Zunwen He, Wancheng Zhang, Limin Xiao, and Shidong Zhou. "Measurement-Based Delay and Doppler Characterizations for High-Speed Railway Hilly Scenario." International Journal of Antennas and Propagation 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/875345.
Full textMüller-Bender, D., A. Otto, and G. Radons. "Resonant Doppler effect in systems with variable delay." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 377, no. 2153 (July 22, 2019): 20180119. http://dx.doi.org/10.1098/rsta.2018.0119.
Full textYoshida, Soshi, Kazuma Hase, Olga Heim, Kohta I. Kobayasi, and Shizuko Hiryu. "Horseshoe bats use not changes in echo delay but Doppler shift to perceive approaching objects." Journal of the Acoustical Society of America 151, no. 4 (April 2022): A146. http://dx.doi.org/10.1121/10.0010922.
Full textCherrak, Omar, Hicham Ghennioui, Nadege Thirion Moreau, and El Hossein Abarkan. "Blind separation of complex-valued satellite-AIS data for marine surveillance: a spatial quadratic time-frequency domain approach." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 3 (June 1, 2019): 1732. http://dx.doi.org/10.11591/ijece.v9i3.pp1732-1741.
Full textLi, Li. "Joint Estimation of Doppler and Time Delay of Wideband Echoes for LFM Pulse Radar Based on Fractional Correlation in Impulse Noise Environment." Advanced Materials Research 989-994 (July 2014): 3706–9. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3706.
Full textDissertations / Theses on the topic "Delay-Doppler"
Halimi, Abderrahim. "From conventional to delay/Doppler altimetry." Phd thesis, Toulouse, INPT, 2013. http://oatao.univ-toulouse.fr/10444/1/halimi.pdf.
Full textDooley, Saul. "Subsample time delay and Doppler estimation." Thesis, University of Strathclyde, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248768.
Full textFofanah, Ibrahim, and Wannaw Assegu. "Delay Spread Characterization of the Aeronautical Channel." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581653.
Full textRadio transmission channel influences greatly the quality of transmitted voice and data signal in terms of data rate and robustness. This degradation is as a result of many factors, notable amongst them are having multiple replica of the transmitted signal at the receiver (multipath), changes of frequency as a result of the movement of the aircraft (Doppler shift) and noise. This paper characterizes the scattered components of the aeronautical channel in terms of delay spread. Geometric representation is used to derive expressions for the maximum delay spread using the 2-ray model and the three dimensional model of the scattered path. Furthermore, the delay and Doppler frequencies are described as a function of the horizontal distance to the specular reflection point between a ground station and a test article. The simulated results are compared to measured data of related articles and the value of the maximum delay spread is compared with the proposed intersymbol guard band for Orthogonal Frequency Division Multiplexing (OFDM) in the Integrated Network Enhanced Telemetry (iNET) program to see if this proposition can be adapted to the aeronautical channel.
Granado, Diogo Wachtel. "Comparação entre métodos delay-and-sum e f-k migration para reconstrução de imagens Doppler por ultrassom." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2969.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Financiadora de Estudos e Projetos (FINEP)
Fundação Araucária de Apoio ao Desenvolvimento Científico e Tecnológico do Paraná
Universidade Tecnológica Federal do Paraná (UTFPR)
Os sistemas de ultrassom para imagens médicas sempre estão em evolução. Na área de imagem Doppler, em que se pode observar o movimento do objeto, principalmente o fluxo sanguíneo, encontram-se algumas técnicas para obtenção de melhor qualidade de imagem. Os principais problemas da técnica Doppler são a complexidade e a quantidade de dados a serem processados para a formação das imagens. Este trabalho buscou avaliar dois métodos para processamento de imagens Doppler. Inicialmente, foram realizados estudos com o beamforming tradicional gerado pela plataforma de pesquisas ULTRA-ORS no laboratório de ultrassom. Após, foram realizados estudos com o equipamento Verasonics Vantage™ utilizando geração de onda de ultrassom planas, plane-wave, com um transdutor linear modelo L11-4v de 128 elementos. Os phantoms utilizados foram o CIRS Doppler String Phantom model 043 e o Doppler Flow Phantoms & Pumping Systems da ATS. Foram implementados algoritmos para reconstrução das imagens em modo B no Matlab® utilizando os métodos delay-and-sum e f-k migration, com a geração de imagens Doppler colorido e Power Doppler. Os dados para geração de imagem modo B com plane-wave foram adquiridos com variação de 1 a 75 ângulos, na faixa entre -8,88° e 8,88°, com passo de 0,24°. Os resultados obtidos com o f-k migration apresentaram maior resolução, com erros de 1,0 % e 0,8 % para as resoluções lateral e axial, respectivamente, enquanto o método DAS apresentou erros de 12,0 % para resolução lateral e 10,0 % para resolução axial. Para geração das imagens Doppler com plane-wave os dados foram adquiridos com variação de 1 a 21 ângulos, na faixa entre -15,0° e 15,0°, com passo de 1,5°. A estimação da velocidade através da técnica Doppler apresentou melhores resultados utilizando-se o método DAS, com erro de 8,3 %, enquanto o método f-k migration apresentou erro de 16,6 %. Analisando-se os resultados obtidos, foi possível verificar que a técnica plane-wave permite a geração de imagens com maior taxa de quadros por segundo do que os métodos tradicionais. Também pode se observar que o método f-k migration gera imagens de maior qualidade com menor número de ângulos de aquisição, cerca de 9 ângulos, porém possui pior desempenho para geração de imagens Doppler quando comparado ao DAS.
The medical ultrasound equipment is always evolving. In the field of Doppler imaging, which object movement and mainly blood flow of vessels can be measured, there are some techniques to improve image quality. The main problems of the Doppler technique are the complexity and the amount of data to be processed for the image reconstruction. The aim of this work was to evaluate two methods for Doppler images processing. Initially, studies were carried out with the traditional beamforming technique, generated by the research platform ULTRA-ORS in the ultrasound laboratory. Then, with the Verasonics Vantage™ equipment, it was generated ultrasound plane waves with a linear transducer L11-4v of 128 elements. Two Doppler phantoms were used, the CIRS Doppler String Phantom model 043 and the Doppler Flow Phantoms & Pumping Systems from ATS. Algorithms for B mode image reconstruction were developed in Matlab® using the methods Delay-and-Sum and f-k Migration to generate Color Doppler and Power Doppler images. The B mode images with plane-wave were generated from the data acquired with 1 to 75 angles, ranging from -8.88° to 8.88° and 0.24º step. The f-k migration’s results presented higher resolutions than DAS method, with errors of 1.0 % and 0.8 % for lateral and axial resolutions, respectively, while the DAS method presented errors of 12.0 % for lateral resolution and 10.0 % for axial resolution. The data for color Doppler images with plane-wave generation were acquired with 1 to 21 angles, ranging from -15.0° to 15.0°and 1.5° step. The Doppler velocity estimation using the DAS method showed better results (error of 8.3 %) than the f-k migration (error of 16.6 %). Analyzing the obtained results, it was possible to see that the plane wave imaging technique allows the improvement of the frame-rate, being faster than traditional methods. Additionally, it was verified that f-k migration method produces images with better quality using less steering angles, approximately 9 angles, but it shows worse performance when generating Doppler images.
Williams, Steve. "Advanced Hardware-in-the-Loop Testing Assures RF Communication System Success." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/604299.
Full textRF Communication (COMMS) systems where receivers and transmitters are in motion must be proven rigorously over an array of natural RF link perturbations such as Carrier Doppler shift, Signal Doppler shift, delay, path loss and noise. These perturbations play significant roles in COMMS systems involving satellites, aircraft, UAVs, missiles, targets and ground stations. In these applications, COMMS system devices must also be tested against increasingly sophisticated intentional and unintentional interference, which must result in negligible impact on quality of service. Field testing and use of traditional test and measurement equipment will need to be substantially augmented with physics-compliant channel emulation equipment that broadens the scope, depth and coverage of such tests, while decreasing R&D and test costs and driving in quality. This paper describes dynamic link emulation driven by advanced antenna and motion modeling, detailed propagation models and link budget methods for realistic, nominal and worst-case hardware-in-the-loop test and verification.
Naftali, Eran 1971. "First order bias and second order variance of the Maximum Likelihood Estimator with application to multivariate Gaussian data and time delay and Doppler shift estimation." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/88334.
Full textŠulc, Martin. "Rozpoznávání pohybujícího se objektu pomocí MIMO radaru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220219.
Full textLollini, Emanuele. "Analysis of multi-station technique for noise reduction in Deep Space Doppler tracking." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amslaurea.unibo.it/25914/.
Full textSng, Sin Hie. "Radio channel modeling for mobile ad hoc wireless networks." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FSng.pdf.
Full textThesis advisor(s): Murali Tummala, Roberto Cristi. Includes bibliographical references (p. 71). Also available online.
Mauuary, Didier. "Détection, estimation et identification pour la tomographie acoustique océanique : étude théorique et expérimentale." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0033.
Full textBooks on the topic "Delay-Doppler"
Delay-Doppler Communications. Elsevier, 2022. http://dx.doi.org/10.1016/c2020-0-01791-3.
Full textHong, Yi, Emanuele Viterbo, and Tharaj Thaj. Delay-Doppler Communications: Principles and Applications. Elsevier Science & Technology Books, 2022.
Find full textDelay-Doppler Communications: Principles and Applications. Elsevier Science & Technology, 2022.
Find full textLee, Jun. AR modeling of coherence in time delay and Doppler estimation. 1988.
Find full textBook chapters on the topic "Delay-Doppler"
Setlak, Lucjan, Rafał Kowalik, and Maciej Smolak. "Doppler Delay in Navigation Signals Received by GNSS Receivers." In Lecture Notes in Electrical Engineering, 3–8. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21507-1_1.
Full textJitsumatsu, Yutaka, Tohru Kohda, and Kazuyuki Aihara. "Delay-Doppler Space Division-Based Multiple-Access Solves Multiple-Target Detection." In Multiple Access Communcations, 39–53. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-03871-1_5.
Full textSchempp, Walter. "Time Delay and Doppler Frequency Shift in Radar/Sonar Detection, with Application to Fourier Optics." In Delay Equations, Approximation and Application, 234–63. Basel: Birkhäuser Basel, 1985. http://dx.doi.org/10.1007/978-3-0348-7376-5_14.
Full textBernfeld, Marvin, and F. Alberto Grünbaum. "A Tomography-Based Approach for Imaging Radar Backscatter in Range Delay and Doppler." In Ultra-Wideband, Short-Pulse Electromagnetics, 525–29. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2870-8_58.
Full textJitsumatsu, Yutaka, and Tohru Kohda. "Digital Phase Updating Loop and Delay-Doppler Space Division Multiplexing for Higher Order MPSK." In Multiple Access Communications, 1–15. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10262-7_1.
Full textWu, Xuerui, and Shuanggen Jin. "Simulations and Analysis of BeiDou Navigation Satellite System (BDS)-Relectometry Delay-Doppler Maps for Vegetation." In Lecture Notes in Electrical Engineering, 87–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54737-9_9.
Full textZiemer, Rodger E., and Thaddeus B. Welch. "MCM-DSSS with DPSK Modulation and Equal Gain Combining in Delay and Doppler-Spread Rician Fading." In Multi-Carrier Spread Spectrum & Related Topics, 99–108. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/978-1-4615-4463-0_11.
Full textBloemen, Steven. "Mass Ratio from Doppler Beaming and Rømer Delay Versus Ellipsoidal Modulation in the Kepler Data of KOI-74." In High-Precision Studies of Compact Variable Stars, 63–79. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10283-2_5.
Full textCzarske, J. W., and H. Müller. "Two-Component Directional Laser Doppler Anemometer Based on a Frequency Modulated Nd: YAG Ring Laser and Fiber Delay Lines." In Developments in Laser Techniques and Fluid Mechanics, 23–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60911-4_3.
Full textMo, Jun, Zhongliang Deng, Buyun Jia, Xinmei Bian, Wen Liu, and Yuan Sun. "A Novel Multipath Mitigation Method Based on Fast Orthogonal Search (FOS) for Short-Delay Multipath with Zero Doppler Shift Difference." In Lecture Notes in Electrical Engineering, 289–99. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0029-5_26.
Full textConference papers on the topic "Delay-Doppler"
D'Aria, Davide, Pietro Guccione, Betlem Rosich, and Robert Cullen. "Delay/Doppler altimeter data processing." In 2007 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2007. http://dx.doi.org/10.1109/igarss.2007.4422748.
Full textColclough and Titlebaum. "Delay-Doppler POCS for specular multipath." In IEEE International Conference on Acoustics Speech and Signal Processing ICASSP-02. IEEE, 2002. http://dx.doi.org/10.1109/icassp.2002.1004780.
Full textColclough, Douglas D., and Edward L. Titlebaum. "Delay-doppler pocs for specular multipath." In Proceedings of ICASSP '02. IEEE, 2002. http://dx.doi.org/10.1109/icassp.2002.5745519.
Full textGholizadeh, Mohammad Hossein, Hamidreza Amindavar, and James A. Ritcey. "Delay-Doppler radar tracking using moments." In 2010 IEEE Radar Conference. IEEE, 2010. http://dx.doi.org/10.1109/radar.2010.5494486.
Full textFriedlander, B. "High resolution Doppler and delay estimation." In 2013 Asilomar Conference on Signals, Systems and Computers. IEEE, 2013. http://dx.doi.org/10.1109/acssc.2013.6810255.
Full textLin, Hai, and Jinhong Yuan. "On Delay-Doppler Plane Orthogonal Pulse." In GLOBECOM 2022 - 2022 IEEE Global Communications Conference. IEEE, 2022. http://dx.doi.org/10.1109/globecom48099.2022.10001406.
Full textNelson, D. J. "Estimating delay and Doppler from a super resolution delay function." In Optical Engineering + Applications, edited by Franklin T. Luk. SPIE, 2008. http://dx.doi.org/10.1117/12.785252.
Full textJensen, J. R., and R. K. Raney. "Delay/Doppler radar altimeter: better measurement precision." 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.1998.703724.
Full textBell, Mark R. "Diversity waveform techniques in delay-Doppler imaging." In Electronic Imaging 2003, edited by Charles A. Bouman and Robert L. Stevenson. SPIE, 2003. http://dx.doi.org/10.1117/12.483905.
Full textWenshu Zhang, Huilin Xu, and Liuqing Yang. "Delay-Doppler span estimation in OFDM radar." In 2011 45th Annual Conference on Information Sciences and Systems (CISS). IEEE, 2011. http://dx.doi.org/10.1109/ciss.2011.5766215.
Full textReports on the topic "Delay-Doppler"
Snyder, Donald L. Delay-Doppler Radar Imaging. Fort Belvoir, VA: Defense Technical Information Center, November 1986. http://dx.doi.org/10.21236/ada176626.
Full textRaney, R. K. Delay/doppler Radar Altimeter in Littoral Regions. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada628208.
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