Results 41 to 50 of about 23,654,929 (387)
Multi-Level Fusion Indoor Positioning Technology Considering Credible Evaluation Analysis
Remote Sensing, 2023 Aiming at the problems of the low robustness and poor reliability of a single positioning source in complex indoor environments, a multi-level fusion indoor positioning technology considering credible evaluation is proposed.
Lu Huang +5 more
doaj +1 more source
Using Surface Brightness Fluctuations to Study nearby Satellite Galaxy Systems: The Complete Satellite System of M101 [PDF]
Astrophysical Journal, 2019 We use surface brightness fluctuation (SBF) measurements to constrain the distance to low surface brightness (LSB) dwarfs in the vicinity of M101. Recent work has discovered many LSB candidate satellite companions of M101.
S. Carlsten +3 more
semanticscholar +1 more source
Sensors, 2020 The autocorrelation function (ACF) of the Binary Offset Carrier modulation (BOC) signal for Global Navigation Satellite System (GNSS) has multiple peaks, ambiguity is easily generated during the synchronization of the baseband signal.
Fang Hao +6 more
doaj +1 more source
Evaluation of SNPP and NOAA-20 VIIRS Datasets Using RadCalNet and Landsat 8/OLI Data
Remote Sensing, 2022 In this study, we used RVUS data from RadCalNet as a benchmark to verify the radiometric accuracy and stability of operational and reprocessed SNPP/VIIRS data and the accuracy of NOAA-20/VIIRS data, as well as to assess the efficiency of the SNPP/VIIRS ...
Xin Jing +4 more
doaj +1 more source
Towards quantum communication from global navigation satellite system [PDF]
Quantum Science and Technology, 2018 Satellite-based quantum communication (QC) is an invaluable resource for the realization of a quantum network at the global scale. In this regard, the use of satellites well beyond the low Earth orbit gives the advantage of long communication time with a
L. Calderaro +9 more
semanticscholar +1 more source
A Non-Linear Filtering Algorithm Based on Alpha-Divergence Minimization
Sensors, 2018 A non-linear filtering algorithm based on the alpha-divergence is proposed, which uses the exponential family distribution to approximate the actual state distribution and the alpha-divergence to measure the approximation degree between the two ...
Yarong Luo +3 more
doaj +1 more source
The dwarf galaxy satellite system of Centaurus A [PDF]
Astronomy & Astrophysics, 2019 Dwarf galaxy satellite systems are essential probes to test models of structure formation, making it necessary to establish a census of dwarf galaxies outside of our own Local Group. We present deep FORS2 VI band images from the ESO Very Large Telescope (
O. Müller +6 more
semanticscholar +1 more source
Analytical Study on Mission Control Element System Availability for Korea Multipurpose Satellite (KOMPSAT) I [PDF]
Journal of Astronomy and Space Sciences, 1998 To estimate the availability of the MCE for KOMPSAT I, mathematical models of H/W and S/W availability, the availability estimating methods for parallel and redundant system were presented. Furthermore, to improve and estimate the MCE system availability,
J. W. Eun, D. I. Chang, J. M. Kim
doaj
Remote Sensing, 2023 Recently, the NOAA has included GNSS (Global Navigation Satellite System) Radio Occultation (RO) data as one of the crucial long-term observables for weather and climate applications.
Shu-peng Ho +5 more
doaj +1 more source
TRITON'S EVOLUTION WITH A PRIMORDIAL NEPTUNIAN SATELLITE SYSTEM. [PDF]
Astron J, 2017 The Neptunian satellite system is unusual. The major satellites of Jupiter, Saturn, and Uranus are all in prograde, low-inclination orbits. Neptune on the other hand, has the fewest satellites, and most of the system’s mass is within one irregular ...
Rufu R, Canup RM.
europepmc +3 more sources