Showing 421 - 440 results of 2,648 for search '"satellites"', query time: 0.06s Refine Results
  1. 421

    Optimal Satellite LEO Constellation Design Based on Global Coverage in One Revisit Time by Peng Zong, Saeid Kohani

    Published 2019-01-01
    “…This paper presents a globe coverage of constellation satellite in one revisit and the regional coverage at defined latitude. …”
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  2. 422
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  4. 424

    Dual Circularly Polarized Patch Antenna with Improved Interport Isolation for S-Band Satellite Communication by Haq Nawaz, Ahmad Umar Niazi, Mansoor Ahmad

    Published 2021-01-01
    “…This paper presents a bi-port, single-layered (planar), dual circularly polarized (CP) patch antenna with improved interport isolation for S-band satellite telemetry and telecommand applications. The dual-port, planar antenna is based on a square-shaped radiator with trimmed corner to achieve CP characteristics (RHCP and LHCP) for excitations from respective ports. …”
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    A Novel Dual-Broadband Circularly Polarized Patch Antenna for Precise Satellite Navigation by Fumin Lin, Liangxian Zhang, Huiping Cai, Mingjian Liu, Xiaopeng Li, Yujie Xiao

    Published 2019-01-01
    “…This paper presents a novel dual-band circularly polarized patch antenna for precise satellite navigation. The radiation elements are composed of the inner cross-shaped patch and the outer annular patch which are printed on the same surface of one substrate. …”
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  9. 429

    A Survey of Secure Communications for Satellite Internet Based on Cryptography and Physical Layer Security by Yu Zhang, Shuangrui Zhao, Ji He, Yuanyu Zhang, Yulong Shen, Xiaohong Jiang

    Published 2023-01-01
    “…Due to the open nature of satellite-ground communication, security issue in satellite internet has always been an important concern for both industry and academia. …”
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    Successful satellite population management: Girnar wildlife sanctuary as a habitat for Asiatic lions by Mohan Ram, Aradhana Sahu, Nityanand Srivastava, Lahar Jhala, Yashpal Zala, Meena Venkataraman

    Published 2025-01-01
    “…This paper presents a case study of a satellite population conservation approach, focusing on the Girnar forests in Gujarat, India. …”
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  12. 432

    A New Variational Assimilation Method Based on Gradient Information from Satellite Data by Bo Zhong, Yun-Feng Wang, Gang Ma, Xin-Yuan Ma, Lu Yang

    Published 2017-01-01
    “…With the development of meteorological observation technology, satellite data have found increasingly wide use in the numerical weather prediction field. …”
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  13. 433

    Mission Overview and Initial Observation Results of the X-Ray Pulsar Navigation-I Satellite by Xinyuan Zhang, Ping Shuai, Liangwei Huang, Shaolong Chen, Lihong Xu

    Published 2017-01-01
    “…The newly launched X-ray pulsar navigation-I (XPNAV-1) is an experimental satellite of China that is designed for X-ray pulsar observation. …”
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  14. 434

    Lightweight Multi-Scale Network for Segmentation of Riverbank Sand Mining Area in Satellite Images by Hongyang Zhang, Shuo Liu, Huamei Liu

    Published 2025-01-01
    “…The rapid identification of riverbank sand mining areas from satellite images is extremely important for ecological protection and shipping management. …”
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  15. 435

    Tracking the Ghosts of the Himalayas: Snow Leopard Conservation Insights From Satellite Collar Data by Pratistha Shrestha, Dayaram Pandey, Pemba Sherpa, Prakash Shah, Dipesh Kumar Sharma

    Published 2025-01-01
    “…ABSTRACT This study presents the first movement analysis of snow leopards (Panthera uncia) using satellite telemetry data, focusing on the northeastern Himalayas of Nepal. …”
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    Network Simulation of Low Earth Orbit Satellite Communication System Based on SNS3 by WU Fengwei, LIU Chuan, SHANG Dan, GENG Min

    Published 2024-12-01
    “…On the basis of SNS3, by constructing an accurate satellite orbit model, physical layer link model and network protocol model, an antenna model suitable for LEO satellite communication system was proposed and designed, and a network simulation platform suitable for low-orbit satellite communication was built, which realized the comprehensive simulation of low-orbit satellite communication network. …”
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    Estimates of Spherical Satellite Drag Coefficients in the Upper Thermosphere During Different Geomagnetic Conditions by Xin Wang, Tingling Ren, Ronglan Wang, Bingxian Luo, Ercha Aa, Lei Cai, Ming Li, Juan Miao, Siqing Liu, Jiancun Gong

    Published 2024-11-01
    “…For the first time, we calculate the spherical satellite drag coefficient using data from the “Orbital Atmospheric Density Detection Experimental Satellite,” referred to as the QX satellite. …”
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