Method for assisted-GPS positioning based on ambiguity resolution in weak signal environment by SONG Cheng, WANG Fei-xue, ZHUANG Zhao-wen

“…An assisted-GPS positioning algorithm was proposed.Based on this algorithm, the receiver needn’t accomplish the bit synchronization, frame synchronization and navigation data demodulation, which were usually necessary for the conventional GPS receiver, it could implement the positioning solution only by the measurement of pseudo-code phase and the assistance data（including ephemeris information and satellite clock corrections etc.）.Compared with the conventional GPS positioning algorithm, the proposed algorithm increases the ambiguity of the signal transmission time as an unknown parameter for the pseudorange equation.When the initial errors of approximate location and receiver’s clock bias were subjected to a constraint domain, the ambiguity of the signal transmission time could be eliminated.Then, the iteratively equation for this algorithm was derived, and the main steps were summarized.The simulation results show the validity of the algorithm.…”
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On the Metric Dimension of Generalized Tensor Product of Interval with Paths and Cycles by Song Li, Jia-Bao Liu, Mobeen Munir

“…The concept of minimum resolving set for a connected graph has played a vital role in Robotic navigation, networking, and in computer sciences. In this article, we investigate the values of m and n for which P2⊗mPn and P2⊗mCn are connected and find metric dimension in this case. …”
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Measurement of Baseline and Orientation between Distributed Aerospace Platforms by Wen-Qin Wang

“…Distributed platforms play an important role in aerospace remote sensing, radar navigation, and wireless communication applications. …”
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Path Planning Using a Hybrid Evolutionary Algorithm Based on Tree Structure Encoding by Ming-Yi Ju, Siao-En Wang, Jian-Horn Guo

“…The experimental results show that the proposed hybrid method demonstrates using fewer turning points than traditional evolutionary algorithms to generate shorter collision-free paths for mobile robot navigation.…”
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Quelle position adopter face au patrimoine qui vient ? by Hervé Davodeau, Régis Barraud

“…The first part of the paper provides a geo-historical contextualisation of the hydraulic works (groynes) intended to improve navigation (channeling). We focus on identifying and analyzing time references used over the different periods : before, during and after the initial development of the groynes and the channel. …”
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Entropy on Intuitionistic Fuzzy Sets and Hesitant Fuzzy Sets by Bicheng Yu, Xuejun Zhao, Mingfa Zheng, Xiujiu Yuan, Bei Hou

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An Aeromagnetic Compensation Algorithm for Aircraft Based on Fuzzy Adaptive Kalman Filter by Yao Zhang, Yu-Xin Zhao, Shuai Chang

“…In order to ensure the effectiveness of geomagnetic navigation, as the foundation, the precise measurement of geomagnetic field must be guaranteed; namely, aircraft aeromagnetic compensation is worthy of being further studied. …”
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Cooperative Guidance of Seeker-Less Missiles for Precise Hit by Jianbo Zhao, Fenfen Xiong

“…Linear-quadratic optimal control and biased proportional navigation guidance (PNG) are employed to develop this two-stage cooperative guidance law to minimize the control cost in the first stage and to reduce the maximum acceleration command in the second stage when the acceleration command is continuous. …”
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Discussion on the New Marine Application of Space-Integrated-Ground Information Network by Yuhui LI, Yu HUANG, Niwei WANG, Xiaofan XU, Zhou LU

“…The demand of new marine applications,such as ocean observation,polar scientific research,autonomous ship navigation,ship dynamic tracking,etc.,for the space-integrated-ground information network was analyzed.The typical marine applications,such as ocean remote sensing data relay,space-based internet of things of ocean observation platform,safety supervision of ships in the middle and far seas were proposed.Through the demonstration and promotion of the space-ground integrated information network marine application,we can promote the eff ective integration of the marine application and the Space-Ground Integrated Information Network,improve the comprehensive level of marine informatization,and help the rapid and stable development of China’s marine economy.…”
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Measurements and Modeling of the Responses of VLF Transmitter Signals to X‐Class Solar Flares at the Great Wall Station in Antarctica by Wei Xu, Xudong Gu, Binbin Ni, Shiwei Wang, Zhe Yang, Wen Cheng, Ze‐Jun Hu, Fang He, Bin Li, Xiang‐Cai Chen, Jian‐Jun Liu, Hong‐Qiao Hu

“…Abstract Solar flares can severely disturb the Earth's ionosphere, leading to changes of atmospheric chemistry and degradation of Global Navigation Satellite System (GNSS) signals. The key to better assess these effects is to more accurately quantify the electron density enhancements induced by solar flares, which is still uncertain. …”
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Galileo multi-day precise orbit determination using L-band and SLR data by Tianhe Xu, Honglei Yang, Song Li, Zhenlong Fang, Wenfeng Nie, Min Li, Baoguo Yu

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Recognition and localization of ratoon rice rolled stubble rows based on monocular vision and model fusion by Yuanrui Li, Yuanrui Li, Liping Xiao, Liping Xiao, Zhaopeng Liu, Zhaopeng Liu, Muhua Liu, Muhua Liu, Peng Fang, Peng Fang, Xiongfei Chen, Xiongfei Chen, Jiajia Yu, Jiajia Yu, Jinlong Lin, Jinlong Lin, Jinping Cai, Jinping Cai

“…After that, we carried out model fusion experiments, which showed that CD (chamfer distance) between predicted 3D coordinates of navigation points obtained by fusing the results of the two models and labels was only 0.0990. …”
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ehealth literacy and health literacy among immigrants and their descendants compared with women of Danish origin: a cross-sectional study using a multidimensional approach among pr... by Claus Thorn Ekstrøm, Richard H Osborne, Sarah Fredsted Villadsen, Hajer Hadi, Israa Ismail, Lars Kayser

“…Objective To explore ehealth literacy, ability to actively engage with healthcare providers and health system navigation among pregnant immigrant women and their descendants compared with women of Danish origin.Design and setting A cross-sectional survey at antenatal clinics in 2016, Denmark.Participants Pregnant women attending antenatal care (n=405).Outcome measures The eHealth Literacy Questionnaire (eHLQ) and two domains from the Health Literacy Questionnaire (HLQ): ability to actively engage with healthcare providers and health system navigation. …”
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Key technology and application of intelligent connected patrol vehicles for security scenario by Yuchao LIU, Ziyue LI

“…Practical applications combined with industry scene is a common problem in the present artificial intelligence technology.Facing the security application scenario,the practice landing of unmanned technology -- intelligent connected patrol vehicle was studied.Integrating different sensors such as camera,LiDAR,inertial navigation system (INS),etc,the awareness system can accurately identify the platform itself,road conditions and target behavior using key technology such as artificial intelligence (AI),data fusion.Combining human intelligence (HI) in scene cognition of human experience and artificial intelligence (AI) in cognition of computing,a hybrid intelligent cognitive system using to security scene was built.Based on human in the loop system architecture and technology such as 5G ,vehicle to everything (V2X),edge computing,etc,different interactions between human ,machine and environment were designed,which ensured the safe and reliable operation of the system and increased the work efficiency by a wide margin.…”
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On Subtree Number Index of Generalized Book Graphs, Fan Graphs, and Wheel Graphs by Daoqiang Sun, Zhengying Zhao, Xiaoxiao Li, Jiayi Cao, Yu Yang

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Collecta, du point de vue du design : faire affleurer les données by Kim Sacks, Sophie Fétro

“…This article traces the development of the Collecta.fr website and is accompanied by a discussion of the issues of the materiality of media (Katherine Hayles) and architecture, the outcropping of data (Aldo Rossi), and navigation (Gilles Deleuze and Félix Guattari; Lucius Burckhardt).…”
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Study of key technology for reconfigurable satellite platform supporting network interconnection by Chao WANG, Xiao-dong HAN, Rui WANG, Xi ZHOU, Lin-lu YANG, Ya-ping LIU

“…Reconfigurable satellite platform is a new spacecraft design concept.The application of distributed computing in reconfigurable integrated satellite platform was studied,the standard mechanical interface,electrical interface for the separation or separation between main platform and a variety of payloads to form a new combination and achieve the expansion of platform functions and efficient use was proposed.Including the security control protocol,scalable design,distributed computing and management models and other aspects of a detailed design,the key technologies of reconfigurable integrated satellite platforms supporting network interconnection were studied to meet the existing communications,remote sensing and navigation satellites’ needs.It will be promoted for the spacecraft design to the integrated business and in the orbit reconfiguration direction of continuous development,which will enhance the stability of the orbit operation,survivability and maintainability and provide a reliable technical foundation for the world of integrated network research.…”
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Joint suppression method for range-Doppler ambiguity sidelobes in DTMB-based passive bistatic radar by Yong Wu, Luo Zuo, Jue Wang, Dan Wang

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Experiences with the GPS in Unstabilized CubeSat by Pavel Kovar

“…The position information was available for approximately 80% of the time, where the position outage was caused by a satellite rotation and relatively long navigation signal reacquisition. The experimental data proved that the position availability can be improved by a higher-performance signal acquisition engine.…”
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Mining the Ocean Genome: Global Bioprospecting Expeditions and Genomic Extractivism on the Oceanic Frontier by Amedeo Policante, Erica Borg

“…Finally, we theorize the peculiar global mobility of bioprospecting vessels as constituting a practice of social construction of the ocean: a peculiar form of scientific navigation, which is already engendering new social uses of marine biodiversity, new strategies of capital accumulation, as well as innovative representations of ocean ecosystems.…”
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