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Advanced Search Results For "DOPPLER effect"

1 - 10 of 30,353 results for
 "DOPPLER effect"
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Real-Time Non-Contact Millimeter Wave Radar-Based Vital Sign Detection.

Publication Type: Academic Journal

Source(s): Sensors (Basel, Switzerland) [Sensors (Basel)] 2022 Oct 06; Vol. 22 (19). Date of Electronic Publication: 2022 Oct 06.

Authors:

Abstract: In this paper, the extraction of the life activity spectrum based on the millimeter (mm) wave radar is designed to realize the detection of target objects and the threshold trigger module. The maximum likelihood estimation method is selected to complet...

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Time-Differenced Carrier Phase Technique for Precise Velocity Estimation on an Android Smartphone.

Publication Type: Academic Journal

Source(s): Sensors (Basel, Switzerland) [Sensors (Basel)] 2022 Nov 04; Vol. 22 (21). Date of Electronic Publication: 2022 Nov 04.

Abstract: GNSS (Global Navigation Satellite System) receivers are not only able to accurately determine position, but also velocity, knowledge of which could be important in several applications. The most adopted technique for velocity estimation exploits the Do...

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Frequency Error Compensation of Unsynchronized Bistatic CW- MIMO Radar for Multiple Human-Body Localization.

Publication Type: Academic Journal

Source(s): IEEE transactions on biomedical circuits and systems [IEEE Trans Biomed Circuits Syst] 2022 Oct; Vol. 16 (5), pp. 882-890. Date of Electronic Publication: 2022 Nov 30.

Abstract: This article presents and experimentally evaluates a frequency error elimination technique suitable for unsynchronized bistatic Multiple-Input Multiple-Output (MIMO) radar for human-body detection. First, a mathematical expression of human-body localiz...

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Hydrogen Balmer line broadening in Ar-N2-SiH4 DC glow discharge.

Publication Type: Academic Journal

Source(s): Journal of Applied Physics; 10/14/2022, Vol. 132 Issue 14, p1-8, 8p

Abstract: Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users ma...

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Miniaturization of Laser Doppler Vibrometers-A Review.

Publication Type: Academic Journal

Source(s): Sensors (Basel, Switzerland) [Sensors (Basel)] 2022 Jun 23; Vol. 22 (13). Date of Electronic Publication: 2022 Jun 23.

Abstract: Laser Doppler vibrometry (LDV) is a non-contact vibration measurement technique based on the Doppler effect of the reflected laser beam. Thanks to its feature of high resolution and flexibility, LDV has been used in many different fields today. The min...

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Sensing spectrum sharing based massive MIMO radar for drone tracking and interception.

Publication Type: Academic Journal

Source(s): PloS one [PLoS One] 2022 May 20; Vol. 17 (5), pp. e0268834. Date of Electronic Publication: 2022 May 20 (Print Publication: 2022).

Authors:

Abstract: Radar sensors are becoming crucial for environmental perception in a world with the tremendous growth of unmanned aerial vehicles (UAVs) or drones. When public safety is a concern, the localization of drones are of great significance. However, a drone ...

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基于双时间点检测的毫米波雷达人流量监测方法.

Publication Type: Academic Journal

Source(s): Telecommunication Engineering. 11/28/2022, Vol. 62 Issue 11, p1593-1599. 7p.

Abstract: 针对现有基于视频监控的人流量统计方案成本高、算法复杂且不利于个人隐私保护的局限性, 利用毫米波雷达体积小、成本低、分辨率高的特点, 提出了一种基于双时间点检测的人流量监测方法. 该方法先获取人体目标散射点位置和多普勒频移信息来构成点云数据, 然后根据多普勒频移正负来判 断人体的运动方向, 并筛选具有高多普勒频移值的点云数据以降低干扰点对聚类结果的影响; 在双时 间点对特定区域内人员数量进行统计, 并根据双时间点之间所获取的点云数据聚类结果对所统计人员 数据进行修正. 实验结果表明, 该方法能够用匿名...

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Comparison of fibre-based phase Doppler analysers.

Publication Type: Conference

Source(s): EPJ Web of Conferences. 10/24/2022, Vol. 269, p1-8. 8p.

Abstract: Laser diagnostics techniques are widely used in experimental fluid mechanics. By far the most widely used systems for getting spatial velocity fields and turbulence data are laser Doppler anemometers (LDA). Further, in the cases of two-phase flows phas...

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Novel scheme to resolve coverage and connectivity issue in wireless sensor networks.

Publication Type: Conference

Source(s): AIP Conference Proceedings. 10/21/2022, Vol. 2555 Issue 1, p1-12. 12p.

Abstract: The localization of WSNs is done at the depths in the ocean for sensing oceanic conditions such as pressure etc. This network is deployed under the water for transmitting the essential information over diverse regions in smooth manner. Hence, the proce...

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PCDE-Sync: A Time Synchronization Mechanism Based on Partial Clustering and the Doppler Effect for Underwater Acoustic Networks.

Publication Type: Academic Journal

Source(s): Computational intelligence and neuroscience [Comput Intell Neurosci] 2022 Mar 28; Vol. 2022, pp. 9554396. Date of Electronic Publication: 2022 Mar 28 (Print Publication: 2022).

Authors:

Abstract: Time synchronization is the basis of coordination and cooperation in underwater acoustic networks. However, because of the propagation delay, node mobility, and Doppler shift, it is impossible to balance the accuracy and energy consumption simply in wa...

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