Suggested Topics within your search.
Showing 621 - 640 results of 781 for search '"radar"', query time: 0.05s Refine Results
  1. 621

    Preliminary report on the excavations of the legionary bath of Brigetio in 2024 by Dávid Bartus, Melinda Szabó, Rita Helga Olasz, Ákos Müller, Bence Simon, Lajos Juhász, Vilmos Lenár, László Borhy, Emese Számadó

    Published 2025-01-01
    “…The excavations here shed a light on the size of the bath, which extended westward over a much larger area than previous excavations and radar surveys had suggested. In connection with the heating systems of the baths, two praefurnia preserved in excellent condition, along with their two adjoining service rooms, were also unearthed. …”
    Get full text
    Article
  2. 622

    A multi-frequency altimetry snow depth product over Arctic sea ice by Alice Carret, Sara Fleury, Alessandro Di Bella, Jack Landy, Isobel Lawrence, Nathan Kurtz, Antoine Laforge, Jérome Bouffard, Tommaso Parrinello

    Published 2025-01-01
    “…This comparison indicates correlations all above 0.37 and reaching 0.91 relative to airborne snow radar. We estimate the snow depth uncertainties of our product to be 0.06 m on average. …”
    Get full text
    Article
  3. 623

    A Generalized Oblique Projection Filter with Flexible Parameter for Interference Suppression by Yi-ming Wang, Xing-peng Mao, Hong Hong, Jie Zhang, Yu-mei Cui

    Published 2015-01-01
    “…Further, an application of GOP filter in ionospheric clutter cancellation in a high frequency surface wave radar (HFSWR) system is given. The ISC is designed specifically to introduce an extra coherent loss to the clutters and a satisfying clutter suppression result is achieved. …”
    Get full text
    Article
  4. 624

    Determining Physical Characteristics of Watersheds in Artvin Province Using SRTM and Topographic Map Data by Saim Yıldırımer, Mehmet Özalp, Esin Erdoğan Yüksel

    Published 2016-09-01
    “…In order to create Digital Elevation Model (DEM), data from both “Shuttle Radar Topography Mission (SRTM)” and “topographical map” was used; thus, providing comparison of the results gathered from these two base maps. …”
    Get full text
    Article
  5. 625

    Time-Frequency Analysis and Target Recognition of HRRP Based on CN-LSGAN, STFT, and CNN by Jianghua Nie, Yongsheng Xiao, Lizhen Huang, Feng Lv

    Published 2021-01-01
    “…Aiming at the problem of radar target recognition of High-Resolution Range Profile (HRRP) under low signal-to-noise ratio conditions, a recognition method based on the Constrained Naive Least-Squares Generative Adversarial Network (CN-LSGAN), Short-time Fourier Transform (STFT), and Convolutional Neural Network (CNN) is proposed. …”
    Get full text
    Article
  6. 626
  7. 627

    Ship Velocity Estimation in Airborne Along-Track Interferometric SAR Imagery Based on the Fractional Fourier Transform by Chao Chen, Yan Li, Kuihua Huang, Yonghong Long, Linlin Zhang, Kewei Ouyang

    Published 2020-01-01
    “…Synthetic aperture radar (SAR) was originally exploited to image stationary scenes. …”
    Get full text
    Article
  8. 628

    Multiobjective Synthesis of Steerable UWB Circular Antenna Array considering Energy Patterns by Leopoldo A. Garza, Marco A. Panduro, David H. Covarrubias, Alberto Reyna

    Published 2015-01-01
    “…True-time delay antenna arrays have gained a prominent attention in ultrawideband (UWB) applications such as directional communications and radar. This paper presents the design of steerable UWB circular array by using a multiobjective time-domain synthesis of energy pattern for circular antenna arrays. …”
    Get full text
    Article
  9. 629

    Low-RCS, Circular Polarization, and High-Gain Broadband Antenna Based on Mirror Polarization Conversion Metasurfaces by Liang Zhang, Changqing Liu, Chun Ni, Meng Kong, Xianliang Wu

    Published 2019-01-01
    “…It achieves circular polarization (CP) and effectively reduces the radar cross section (RCS) and increases gain in the entire x-band. …”
    Get full text
    Article
  10. 630

    Traffic State Recognition of Intersection Based on Image Model and PCA Hashing by Li-li Zhang, Li Wang, Qi Zhao

    Published 2020-01-01
    “…At present, more and more advanced traffic detection technology provides reliable and accurate data for measuring and distinguishing the state of urban road traffic, such as the cooperative vehicle-infrastructure system, wide-area radar technology, and 5G technology. This study proposes a novel method called HTSI (High Precision Traffic State Identification Method), which is based on the advanced detection technology in traffic state recognition at the intersection: The raw data used for intersection traffic state recognition is high-precision detection data of tracking characteristics, which make the data look like a picture of the intersection at God’s perspective. …”
    Get full text
    Article
  11. 631

    Change-Oriented Risk Management in Civil Aviation Operation: A Case Study in China Air Navigation Service Provider by Le-ping Yuan, Man Liang, Yiran Xie

    Published 2020-01-01
    “…Then, taking an air navigation service provider (ANSP) in Northwest China as an example, a case study of system changes from nonradar control operations to radar control operations is analyzed. The effectiveness and applicability of the SCOHI model are tested with a risk assessment. …”
    Get full text
    Article
  12. 632

    On the Unambiguous Distance of Multicarrier Phase Ranging With Random Hopped Frequencies by Peng Liu, Wangdong Qi, Yue Zhang, Li Wei

    Published 2017-01-01
    “…Multicarrier phase ranging (MCPR) technique has been widely used in radio navigation, telemetry, radar, and many other fields. In an MCPR system, unique range estimation can be obtained within only the so-called unambiguous distance (UD) because of phase ambiguity. …”
    Get full text
    Article
  13. 633

    Comparison of Thunderstorm Simulations from WRF-NMM and WRF-ARW Models over East Indian Region by A. J. Litta, Sumam Mary Ididcula, U. C. Mohanty, S. Kiran Prasad

    Published 2012-01-01
    “…Comparison of model-simulated radar reflectivity imageries with observations revealed that NMM model has simulated well the propagation of the squall line, while the squall line movement was slow in ARW. …”
    Get full text
    Article
  14. 634

    All-dielectric carpet cloaks with three-dimensional anisotropy control by Maegawa Yuki, Nakata Yosuke, Sanada Atsushi

    Published 2023-06-01
    “…The measured near-field distributions and bistatic radar cross sections are in good agreement with simulated predictions and the validity of the design method is confirmed.…”
    Get full text
    Article
  15. 635

    Assessment of scientific and technical projects of priority directions of development based on the criterion of use value by L. F. Zakharova, S. V. Novikov

    Published 2018-06-01
    “…A polyciritorial evaluation of the final result of the project and use of the aggregate product as a resultant estimator of the use-value criterion makes it possible to objectify complex procedures for competitive selection of large-scale projects, increase their economic performance, as confirmed by the approbation studies on the example of the project for the creation and production of multifunctional on-board radar equipment.…”
    Get full text
    Article
  16. 636

    Optimized Airborne Millimeter-Wave InSAR for Complex Mountain Terrain Mapping by Futai Xie, Wei Wang, Xiaopeng Sun, Si Xie, Lideng Wei

    Published 2025-01-01
    “…Focusing on the key factors in airborne InSAR data acquisition, this study explores advanced route planning and ground control measurement techniques. Leveraging radar observation geometry and global SRTM DEM data, we simulate layover and shadow effects to formulate an optimal flight path design. …”
    Get full text
    Article
  17. 637

    SVDDD: SAR Vehicle Target Detection Dataset Augmentation Based on Diffusion Model by Keao Wang, Zongxu Pan, Zixiao Wen

    Published 2025-01-01
    “…In the field of target detection using synthetic aperture radar (SAR) images, deep learning-based supervised learning methods have demonstrated outstanding performance. …”
    Get full text
    Article
  18. 638
  19. 639

    Using Open-Source Components to Process Interferometric TerraSAR-X Spotlight Data by Michael Jendryke, Timo Balz, Houjun Jiang, Mingsheng Liao, Uwe Stilla

    Published 2013-01-01
    “…We show how to process bistatic TanDEM-X images and propose an integrated processing option for monostatic TerraSAR-X data in the Delft Object-oriented Radar Interferometric Software (DORIS). The paper focuses on the implementation of this algorithm for high-resolution spotlight InSAR in a public domain tool; hence, it becomes available to a larger research community. …”
    Get full text
    Article
  20. 640

    Vertical Raindrop Size Distribution in Central Spain: A Case Study by Roberto Fraile, Amaya Castro, Miguel González-Colino, Elisabeth Alonso-Blanco, María Fernández-Raga, Covadonga Palencia, Ana I. Calvo

    Published 2015-01-01
    “…Three different devices were used to characterize the precipitation: a disdrometer, a rain gauge, and a Micro Rain Radar (MRR). These instruments determine precipitation intensity indirectly, based on measuring different parameters in different sampling points in the atmosphere. …”
    Get full text
    Article