International Coordination and Support for SmallSat‐Enabled Space Weather Activities by Teresa Nieves‐Chinchilla, Bhavya Lal, Robert Robinson, Amir Caspi, David R. Jackson, Therese Moretto Jørgensen, James Spann

“…Abstract Advances in space weather science and small satellite (SmallSat) technology have proceeded in parallel over the past two decades, but better communication and coordination are needed among the respective worldwide communities contributing to this rapid progress. …”
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Comparative Study of Genome Divergence in Salmonids with Various Rates of Genetic Isolation by Elena A. Shubina, Mikhail A. Nikitin, Ekaterina V. Ponomareva, Denis V. Goryunov, Oleg F. Gritsenko

“…The restriction fragments were shown with sequencing to represent satellite DNA. Effects of speciation are found in repetitive sequences. …”
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Cold Outbreaks at the Mesoscale in the Western Mediterranean Basin: From Raincells to Rainbands by Jordi Mazon, David Pino

“…Reflectivity radar and satellite images are used to detect clouds and precipitation that are associated with these density currents in the meso-α, meso-β, and meso-γ over the Western Mediterranean basin (WMB). …”
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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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A Physically Based Spatial Expansion Algorithm for Surface Air Temperature and Humidity by Hongbo Su, Jing Tian, Renhua Zhang, Shaohui Chen, Yongmin Yang, Yuan Rong, Sujuan Mi, Jianwei Qi

“…The surface air temperature is determined by a combination of the surface observations and the regional land surface temperature observed from a satellite. The average absolute difference of the algorithm is 0.65 degree and 0.31 mb, respectively, for surface air temperature and humidity expansion, which provides a promising approach to downscale the two surface meteorological variables.…”
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Vehicular ad hoc network and clustering routing algorithm applied in wilderness scenarios by Mohsen MOHAMED, Kai-kai XU, Wei-wei XIA, Yi WU, Lian-feng SHEN

“…To solve the communication problem among vehicles in wilderness scenarios such as desert and Gobi or between the vehicles and the outside,a special architecture of VANET was proposed and its clustering and routing algorithm was analyzed.Based on different types of communication terminals each vehicle equips and the location,speed and driving direction information of the periodic message,the vehicles are organized into different clusters.The head of each cluster chooses the best route for its members when they ask for inner-clustering communications or inter-clustering communications.It also searches the nearest vehicle which equips satellite communication terminals or land mobile communications terminals to forward messages when a member requests communicating with the outside of the network.Simulation results show that the proposed algorithm has higher network stability,higher data delivery ratio and less routing overhead.…”
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The Effect of Intermittent Signal on the Performance of Code Tracking Loop in GNSS Receivers by Chung-Liang Chang

“…This paper analyzes the code tracking performance in the presence of signal blanking in Global Navigation Satellite System (GNSS). The blanking effect is usually caused by buildings that obscure the signal in either a periodic or random manner. …”
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Real-Time Optimal Approach and Capture of ENVISAT Based on Neural Networks by Hongjue Li, Yunfeng Dong, Peiyun Li

“…A neural network-based controller is developed to enable a chaser spacecraft to approach and capture a disabled Environmental Satellite (ENVISAT). This task is conventionally tackled by framing it as an optimal control problem. …”
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Loosing no time to deploy digital economy and digital transformation to spur ICT innovation——The latest ICT development trend showcased in the science and technology award of CIC i... by China InstituteofCommunications(CIC)

“…ICT Innovation, industrial development and the new information infrastructure construction, represented by 5G, artificial intelligence, and integrated space-air-ground networks will play an important role in the implementation of the national strategy of building a powerful communications network and comprehensively building a modern socialist country.Based on the current technological development in the ICT field, the China Institute of Communications summarized and sorted out the key directions of technological innovation in this field, including a new generation of mobile communications, network enabling, quantum communications, satellite internet, smart network operation and maintenance, cyberspace security, and the internet of things and the internet of vehicles, network cost reduction and efficiency enhancement, and basic technologies, etc., providing references for all walks of life to understand the technological development in the ICT field.…”
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5G leading digital technology enables the rapid development of agricultural Internet by Gang AN, Yunyong ZHANG, Jinshi WANG, Xuehong YANG

“…With the development of “new infrastructure”, digital village construction of China has ushered in a new climax, digital village of building is not only the strategic direction of rural revitalization, but also an important content of building a digital China.Agricultural Internet is a key link in the construction of digital village.As 5G and other digital technologies continue to penetrated into various fields of agricultural production, China’s agricultural Internet has entered a new stage of rapid development.Focusing on the new changes brought by 5G and other digital technologies to agricultural Internet, through 5G, satellite remote sensing, UAV, artificial intelligence and machine vision to promoted the digital transformation of agricultural production and operation, the future development status and trend of agricultural Internet in China were deeply discussed.…”
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Performance characterization of a new, low-cost multi-GNSS instrument for the cryosphere by Derek James Pickell, Robert Lyman Hawley

“…We developed a multi-frequency, multi-Global Navigation Satellite System (GNSS) positioning instrument optimized for autonomous applications in the cryosphere. …”
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Controlling Conical Beam Carrying Orbital Angular Momentum with Transmissive Metasurface by Jun Sun, Ke Chen, Kai Qu, Junming Zhao, Tian Jiang, Yijun Feng

“…Conical beams have potential uses in wireless and satellite-based communication. In this study, we propose a method using a transmissive metasurface to achieve full control of the diverging effect of orbital angular momentum (OAM) modes to form the desired conical beam. …”
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Numerical Study of Hall Thruster Plume and Sputtering Erosion by Li Yan, Ping-Yang Wang, Yang-Hua Ou, Xiao-Lu Kang

“…Then, SPT-70’s sputtering erosion on satellite surfaces is assessed and effect of mass flow rate on sputtering erosion is analyzed.…”
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Cartographie des paysages : apport à l’analyse des trames vertes et bleues by Émilie Bourget, Laurence Le Dû-Blayo

“…This method is based on the classification of segmented objects extracted from a high-resolution satellite image. This study shows an example picked up on the Pays de Saint-Brieuc, in Côtes d’Armor (France), and deals specifically with the case of the valleys, which strongly structure this space.…”
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Refining instantaneous frequency estimation: Tackling abrupt transitions in aliased non-stationary signals by Sadiq Ali, Nabeel Ali Khan

“…Estimating instantaneous frequencies of such signals is vital in applications involving interference mitigation in Global Navigation Satellite System and jammer localization. In this paper, a method is developed to estimate the Instantaneous Frequency curve in such challenging scenarios, where multi-component signals have abrupt transitions and intersect each other in the time–frequency domain. …”
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Optically controlled high temperature superconducting attenuatorand the influent duration of laser heat by LIU Lin1, YE Yu-tang1, WU Yun-feng1, LIU Juan-xiu2, CHEN Zhen-long1, WANG Yu-lin1

“…A new optically controlled high temperature superconducting microwave variable attenuator used in high-temperature superconducting（HTS） subsystem of satellite system was proposed.The low microwave surface resistance and excellent laser response characteristics of HTS film was used to realize the favorable properties of this attenuator.The main results conclude: Insertion loss of this attenuator is about 0.2dB,which is lower one order than conventional attenuators;Variable precision about 0.01dB can be achieved,which is lower 1~2 order than conventional attenuators.When laser power is about 45mW,the response range of HTS microstrip to laser is about 0.1dB and the duration of heat influence continue 3.5s…”
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A High-Order Compact 2D FDFD Method for Waveguides by Gang Zheng, Bing-Zhong Wang

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Optimization of Aircraft Flight Trajectory Combined with Thinking Navigation Algorithm by Yifan Yang

“…By processing the original satellite clock error data by the first-order difference method, the modeling data can be more suitable for nonlinear characteristics. …”
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Elaboration sites and prepositional meaning construction in English and Polish by Maria Brenda

“…This type of elaboration finds its expression in the typology of languages (satellite- or verb-framed) proposed by Talmy (2000) and elaborated by Slobin (2005).…”
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La connaissance du climat au Brésil : entre le vernaculaire et le scientifique by Francisco Mendonça

“…The environmental question, the satellite images and the debate concerning global changes are the main subjects of interest of the Brazilian climatology in the present time. …”
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