A New Way of Estimating the Spatial and Temporal Components of the Vertical Total Electron Content Gradient Based on UPC‐IonSAT Global Ionosphere Maps by Qi Liu, Manuel Hernández‐Pajares, Heng Yang, Enric Monte‐Moreno, Alberto García‐Rigo, Haixia Lyu, Germán Olivares‐Pulido, Raül Orús‐Pérez

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Research on new frameworks and key technologies for intelligent emergency command communication networks by Li WANG, Aiguo FEI, Ping ZHANG, Lianming XU

Subjects: “…integrated communication-navigating-sensing…”
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Indocyanine green fluorescence-guided laparoscopic central pancreatectomy for complete pancreatic transection trauma: a rare case and literature review by Xitao Wang, Xiong Teng, Yi Liu, Wei Cheng

Subjects: “…incodyanine green fluorescence navigation…”
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GLOBAL MARKET OF SPACE PRODUCTS AND SERVICES: PROBLEMS AND PROSPECTS by S. Bondarev, S. Verigo

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Ionospheric Storm Scale Index Based on High Time Resolution UPC‐IonSAT Global Ionospheric Maps (IsUG) by Qi Liu, Manuel Hernández‐Pajares, Haixia Lyu, Michi Nishioka, Heng Yang, Enric Monte‐Moreno, Tamara Gulyaeva, Yannick Béniguel, Volker Wilken, Germán Olivares‐Pulido, Raül Orús‐Pérez

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Research on nanosecond time synchronization technology for 5G base station based on GNSS neighborhood similarity by Wenxue LIU, Shijun CHEN, Jian GE, Hong YUAN, Cuiling GONG

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Editorial: Brain-inspired autonomous driving by Elishai Ezra Tsur, Gianluca Di Flumeri, Hadar Cohen Duwek

Subjects: “…navigation & control…”
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Examining the Economic Costs of the 2003 Halloween Storm Effects on the North Hemisphere Aviation Using Flight Data in 2019 by Dabin Xue, Jian Yang, Zhizhao Liu, Shiwei Yu

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Development of a Guidance System for an Agricultural Wheeled Robotic Platform in Row Crop Fields by Hossein Behfar, Fahime Hashemi, Arezu Nobakht

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Research on the Adaptive Fusion Timing Algorithm for BeiDou and LORAN Based on the EKF by Xiaolong Guan, Jianfeng Wu, Yuji Li, Zhibo Zhou, Yan Xing, Huabing Wu, Aiping Zhao

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Research progress of ARAIM technology by Ershen WANG, Di YANG, Chen HONG, Pingping QU, Xiaoyu LAN, Chuanyun WANG, Tao PANG

Subjects: “…multi-constellation integrated satellite navigation…”
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Informed circular fields: a global reactive obstacle avoidance framework for robotic manipulators by Marvin Becker, Philipp Caspers, Torsten Lilge, Sami Haddadin, Matthias A. Müller

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Simulation Analysis of Inverting Marine Vertical Deflection Using Spaceborne GNSS-R Interferometric Altimetry by Lichang Duan, Junming Xia, Weihua Bai, Zhenhe Zhai, Feixiong Huang, Cong Yin, Yueqiang Sun, Qifei Du, Dongwei Wang, Xianyi Wang, Yixuan Sun, Shengyu Kang, Guanyi Wang, Xiaofeng Meng, Yunlong Du

Subjects: “…Global navigation satellite system reflectometry (GNSS-R)…”
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Stepping Into an Equatorial Plasma Bubble With a Swarm Overfly by L. Spogli, L. Alfonsi, C. Cesaroni

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Progress of research on clincal application of computer-assisted implant placement techniques for zygomatic implant placement by ZHENG Yue, ZHANG Senlin

Subjects: “…|computer-assisted implant placement technique|static guide system|dynamic navigation system|zygomatic implant|accuracy|safety…”
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Deep Reinforcement Learning Assisted UAV Path Planning Relying on Cumulative Reward Mode and Region Segmentation by Zhipeng Wang, Soon Xin Ng, Mohammed EI-Hajjar

Subjects: “…Autonomous navigation…”
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Space-ground integrated satellite communication network architecture for global energy internet by Yongliang LI, Xu’an LI, Jie TONG, Yuqing LEI, Huixia DING, Junfeng LAN

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Study on a multi-satellite constrained space-time anti-jam algorithm by Guo-sheng HUANG, Zheng-rong YI, Tao SHUAI, Zhen-cai ZHU

Subjects: “…global navigation satellite system…”
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A novel system for markerless intra-operative bone and bone fragment tracking by Marcus Tatum, Andrew Kern, Jessica E. Goetz, Geb Thomas, Donald D. Anderson

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Filter Kalman for solving the problem of coordinates unmanned aerial vehicles by N. N. Arefyev

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