Showing papers in "Advances in Space Research in 2019"

TL;DR: This paper uses real data of sensors on-board the CBERS-2 remote sensing satellite (China Brazil Earth Resources Satellite) and finds that the filters are very competitive and present advantages and disadvantages that should be dealt with according to the requirements of the problem.

TL;DR: In this article, the MIROC5 model of RCP 2.6, 4.5, 6.0 and 8.5 scenarios have been used to estimate the future period precipitation in storm rainfall event.

TL;DR: In this paper, image transformation techniques such as specialized band ratioing and principal component analysis are used to delineate lithological units and alteration minerals in the Sanandaj-Sirjan Zone (SSZ).

TL;DR: In this article, an object-based random forest (RF) method was proposed for paddy rice mapping using time series Sentinel-1 and Sentinel-2 data, which can provide technology support for rice mapping in areas with a lot of cloudy and rainy weathers.

TL;DR: The possibility to access undifferenced and uncombined Global Navigation Satellite System measurements on smart devices with an Android operating system allows us to manage pseudorange and carrier-phase measurements to increase the accuracy of real-time positioning.

TL;DR: In this paper, a comprehensive and in-depth analysis of the quality of raw GNSS observations of Android smartphones is conducted in terms of the carrier-to-noise density ratio (C/N0), the GPS/GLONASS/BDS multi-system pseudorange noise, the tracking capability of the carriers, and velocity estimation.

TL;DR: The goal of this roadmap is to encourage the space science community to leverage developments in the small satellite industry in order to increase flight rates, and change the way small science satellites are built and managed.

TL;DR: In this paper, the authors used the Hyperbolic Method (HM) to connect the above unlinked SBAS results, which is often used to fit the monitored subsidence in practice as a geotechnical engineering tool.

TL;DR: This article investigates the feasibility of LeGNSS with the concentration on the key issues in the whole data processing for providing real-time PPP service based on a system configuration with fourteen satellites of BeiDou Navigation Satellite System (BDS), twenty-four satellites of the Global Positioning System (GPS), and sixty-six satellites ofThe Iridium satellite constellations.

TL;DR: An improvement in the consistency of density data between these four missions, and of data obtained before, during and after attitude manoeuvres of CHAMP and Swarm, and the new models result in larger densities, compared to the previously used panel method.

TL;DR: In this article, the authors used the temporal-spatial fusion model ESTARFM (Enhanced Spatial and Temporal Adaptive Reflectance Fusion Model) to blend Landsat8 and MODIS data and obtain time-series Landsat 8 images.

TL;DR: In this article, a three-component unmagnetized plasma which consists of mobile fluid cold ions, Maxwellian cold electrons and q-nonextensive hot electrons employing phase plane analysis is investigated.

TL;DR: In this article, the authors presented different time interval of pre-seismic ionospheric anomalies, however, this study showed that EQs ionosphere precursors may occur within 10 days.

TL;DR: A proof of concept for a single frequency correction algorithm based in GNSS GIM vTEC and Fully Connected Neural Networks is provided and results indicate that this kind of model can be used in combination with the Galileo Signal-in-Space (SiS) NeQuick G parameters.

TL;DR: The ARIANNA project as discussed by the authors uses a surface array of independent radio detector stations in Antarctica for the detection of ultra-high energy neutrinos (UHE) with the potential to reveal the sources of UHE cosmic rays especially if combined with observations in the electromagnetic spectrum and gravitational waves.

TL;DR: In this paper, the features of ionospheric parameters variations during the geomagnetic storm of September 7-8, 2017 were analyzed and it was found that these two storms had different impacts on the ionosphere.

TL;DR: In this paper, the authors analyzed the accuracy of the dynamic positioning of six Samsung Galaxy smartphones during vessel manoeuvring, using corrections from an active geodetic network with an accuracy of 2-3 cm (p = 0.95).

TL;DR: In this article, the NUCLEON satellite experiment is designed to directly investigate the energy spectra of cosmic-ray nuclei and the chemical composition in the energy range of 2-500TeV.

TL;DR: A hierarchical scheduling algorithm based on ant colony algorithm is proposed for the real-time scheduling problem, which means the re-scheduling process becomes unnecessary, meaning the wasting of computational resources is avoided and the solution profit is improved.

TL;DR: The improved ACC data transplant became part of the processing standards for the upcoming JPL RL06 gravity solution and has significantly reduced noise, especially for degrees beyond the first orbital resonance, when compared to the simple transplant method.

TL;DR: This survey enumerates challenges for both planetary geologists and machine learning researchers, looks at the recent automatic crater detection advancements using machine learning techniques (primarily in methods using CNNs), and makes recommendations for the path toward greater automation.

TL;DR: It is shown that the designed controller is effective for changing information exchange topology making it robust to node failure, and the stability of the overall closed-loop system is proved by using Lyapunov theory.

TL;DR: An infrastructure exploiting the capabilities of both optical technologies for the realization of a modernized constellation of navigation satellites emitting highly synchronized signals is reviewed, and such infrastructure improves satellite navigation in terms intra-system synchronization, orbit determination accuracy, as well as system monitoring and integrity.

TL;DR: Assessment of the latest performance of the Galileo-only precise point positioning (PPP) and the contribution of Galileo to the Multi-GNSS PPP solutions shows that the three-dimensional positioning accuracy of Galileo static and kinematic PPP can reach centimeter level and decimeter level after convergence, respectively.

TL;DR: In this article, a multi criteria evaluation is applied using 16 morphometric indicators, geology and lineaments to identify the areas vulnerable in respect to drainage and relief conditions, both the diversity maps are integrated for final landslide susceptibility mapping.

TL;DR: The potentiality of using the latter method for fixing the phase ambiguities for the Galileo system combined with GPS measurements in a Multi-GNSS solution is proved and the integer property of the Galileo phase clocks is demonstrated.

TL;DR: In this article, a multivariate ionospheric TEC forecasting model based on linear time series model in combination with Autoregressive and Moving Average (ARMA) is proposed and implemented using Bengaluru International GNSS Service (IGS) station data (geographic lat. −13.02°N, long. 77.57°E; geomagnetic latitude: 4.4°N) during the period of 8 years (2009-2016) in the 24th solar cycle.

TL;DR: In this paper, the authors present the results of Swarm satellites (Alpha, Bravo and Charlie) data analysis inside the Dobrovolsky area around the Iran earthquake epicenter during the period from 1 August to 30 November 2017, showing not only anomalies in atmosphere and ionosphere but also a contemporary analysis of different data sources to detect the possible Lithosphere Atmosphere Ionosphere Coupling (LAIC) effects.

TL;DR: In this article, the dynamics of ion acoustic waves in Thomas-Fermi plasmas with source term consisting of electrons, positrons and positive ions, where electrons and positrons follow zero-temperature Fermi-gas statistics, but ions behave as classical fluid.

TL;DR: The European Solar Telescope (EST) as mentioned in this paper is a project of a new-generation solar telescope, which has a large aperture of 4'm, which is necessary for achieving high spatial and temporal resolution.