Results 41 to 50 of about 2,695 (175)
Navigation, 2022 A modified generalized trigonometric series (GTS) function is presented for the joint estimation of local ionospheric activities and differential code biases (DCBs) of the third-generation BeiDou navigation satellite system (BeiDou-3).
Ningbo Wang +3 more
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The Ionospheric Scintillation Effects on the BeiDou Signal Receiver [PDF]
Sensors, 2016 Irregularities in the Earth’s ionosphere can make the amplitude and phase of radio signals fluctuate rapidly, which is known as ionospheric scintillation. Severe ionospheric scintillation could affect the performance of the Global Navigation Satellite System (GNSS). Currently, the Multiple Phase Screen (MPS) technique is widely used in solving problems
Zhijun He 0003 +2 more
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An Integrated Vessel Tracking System by Using AIS, Inmarsat and China Beidou Navigation Satellite System [PDF]
TransNav, 2012 As there are more and more Automatic Identification System (AIS) sets have been deployed onboard, it is getting easier for people to trace vessels. Today, many online vessel monitoring services have been developed; however, most of them are based on AIS ...
Chun Yang +3 more
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BMC Bioinformatics, 2022 Background MircoRNAs (miRNAs) play a central role in diverse biological processes of Camellia sinensis var.assamica (CSA) through their associations with target mRNAs, including CSA growth, development and stress response.
Haisong Feng +4 more
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ANALYSIS OF URBAN FOREST CARBON SEQUESTRATION CAPACITY: A CASE STUDY OF ZENGDU, SUIZHOU [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Carbon-fixing and oxygen-releasing is an important content of forest ecosystem serving in city. Analysis of forest ecosystem carbon sequestration capacity can provide scientific reference for urban forest management strategies.
X. Yu, H. Wang, W. Cai, Y. Han
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Research on Modeling Weighted Average Temperature Based on the Machine Learning Algorithms
Atmosphere, 2023 In response to the nonlinear fitting difficulty of the traditional weighted average temperature (Tm) modeling, this paper proposed four machine learning (ML)-based Tm models.
Kai Li +5 more
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Characteristics of BeiDou-3 Experimental Satellite Clocks [PDF]
Remote Sensing, 2018 The characteristics of the improved Atomic Frequency Standard (AFS) operated on the latest BeiDou-3 experimental satellites are analyzed from day-of-year (DOY) 254 to 281, of the year 2017, considering the following three aspects: stability, periodicity, and prediction precision.
Yifei Lv +3 more
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Precise orbit determination and point positioning using GPS, Glonass, Galileo and BeiDou
Journal of Geodetic Science, 2014 State of the art Precise Point Positioning (PPP) is currently based on dual-frequency processing of GPS and Glonass navigation systems. The International GNSS Service (IGS) is routinely providing the most accurate orbit and clock products for these ...
Tegedor J., Øvstedal O., Vigen E.
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Geographically Weighted Flow Cross K-Function for Network-Constrained Flow Data
Applied Sciences, 2022 Network-constrained spatial flows are usually used to describe movements between two spatial places on a road network. The analysis of the spatial associations between different types of network-constrained spatial flows plays a key role in understanding
Weijie Zhang +4 more
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