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Showing papers in "Advances in Space Research in 2016"


Journal ArticleDOI
TL;DR: In this article, the authors used Decision Tree (DT) approach to assess the land cover change and desertification of the Hogno Khaan protected area in 1990, 2002, and 2011.

116 citations



Journal ArticleDOI
TL;DR: In this paper, a two-step approach was proposed to estimate the scale factors and biases of the accelerometer scale factor matrix for the gravity recovery and climate experiment (GRACE) data.

81 citations


Journal ArticleDOI
TL;DR: In this article, the authors used 1.5 years of Swarm GPS and attitude data to generate kinematic positions of high quality to perform gravity field determination using the Celestial Mechanics Approach.

77 citations


Journal ArticleDOI
TL;DR: A ten-parameter Klobuchar-like model, which describes the nighttime term as a linear function of geomagnetic latitude, is finally proposed for GNSS single-frequency ionospheric corrections.

77 citations


Journal ArticleDOI
TL;DR: In this paper, the authors highlight the progress that has been achieved in understanding the X-ray phenomenon over the last 15 years, both on theoretical and observational grounds, and highlight the way for future investigations using the next generation of Xray satellites that will provide crucial information on the Xray emission formed in the innermost part of the wind-wind interaction.

77 citations


Journal ArticleDOI
TL;DR: The issue of the space robot motion control is reformulated by using NMPC with predefined objectives under input, output and obstacle constraints over a receding horizon by using an on-line quadratic programming procedure to obtain the constrained optimal control decisions in real-time.

73 citations


Journal ArticleDOI
TL;DR: In this paper, the authors classified the γ Cas stars as the prototype of a class of stars that emit hard thermal X-rays, i.e., stars with light curves showing variability on a few broadly defined timescales and spectra indicative of an optically thin plasma consisting of one or more hot thermal components.

67 citations


Journal ArticleDOI
TL;DR: The proposed method is capable of rapid generation of sub-optimal feasible trajectories that are totally different from and comparable to the solutions of the state-of-the-art three-dimensional shape-based methods.

67 citations


Journal ArticleDOI
TL;DR: The results indicate that the improved robust Kalman filter used in GPS/UWB/INS tightly coupled navigation is able to remove the harmful effect of gross error in UWB observation.

54 citations


Journal ArticleDOI
TL;DR: An automated streak detection and processing pipeline is developed and demonstrated its performance with an extensive database of semisynthetic images simulating streak observations both from ground-based and space-based observing platforms.

Journal ArticleDOI
TL;DR: In this article, the effects of dynamical coupling between the rotational (attitude) and translational (orbital) motion of spacecraft near small Solar System bodies near small asteroids are investigated.

Journal ArticleDOI
TL;DR: It is demonstrated, as a major novel contribution, how friction between the net and a tumbling target allows reducing its angular motion, stabilizing the system and allowing safer towing operations, giving engineering answers to most challenging open points to lead to a ready to flight solution.

Journal ArticleDOI
TL;DR: Evaluation of the intrinsic quality of the new DORIS Terrestrial Reference Frame shows that the addition of data from the new missions equipped with the latest generation of DORis receiver results in an internal position consistency of 10 mm or better after mid-2008.

Journal ArticleDOI
TL;DR: In this article, the authors explore the factors that determine the velocity amplitude in global simulations of solar convection, and they consider how these might scale to solar parameter regimes, by decreasing the thermal diffusivity along two paths in parameter space.

Journal ArticleDOI
TL;DR: In order to improve the orbit determination accuracy for BDS, a new orbit determination strategy is proposed, in which the satellite clock measurements from TWSTFT are fixed as known values, and only the orbits of the satellites are solved.

Journal ArticleDOI
TL;DR: In this paper, a set of thermophysical property models for lunar regolith are presented, which are based on data from Apollo samples and high-temperature molten regolith simulants, extending significantly beyond existing models in the literature.

Journal ArticleDOI
TL;DR: In this article, a numerical model for the solar modulation of cosmic rays, based on the solution of a set of stochastic differential equations (SDEs), is used to illustrate the effects of modifying the heliospheric magnetic field, particularly in the polar regions of the Heliosphere.

Journal ArticleDOI
TL;DR: The stable surface flux transport and Babcock-Leighton/Flux Transport (STABLE) model as discussed by the authors is a 3D dynamo model in which the source of poloidal field is the explicit emergence, distortion, and dispersal of bipolar magnetic regions (BMRs).

Journal ArticleDOI
TL;DR: In this article, a regional cross-calibration between the first Delay-Doppler altimetry dataset from CryoSat-2 and a retracked Envisat dataset is presented, in order to test the benefits of the delay-doppler processing and to expand the envisat time series in the coastal ocean.


Journal ArticleDOI
TL;DR: A summary of scientific challenges in space weather research that are considered to be open scientific questions and how they are being addressed in terms of instrumentation by the international community, including the Latin American groups is provided.

Journal ArticleDOI
TL;DR: In this article, the authors calculated the wavelet spectrum change of brightness temperature (TBB) and outgoing long-wave radiation (OLR) data from the FY-2E meteorological satellite, the thermal infrared anomalous change of 20 moderate-strong earthquakes in Tibet from January 12, 2010, to April 30, 2015, are studied.

Journal ArticleDOI
TL;DR: In this paper, a comparison between two global models, the ASH and EULAG codes, is made, where the sub-grid scales are treated implicitly by the numerical scheme, while in ASH their effect is generally modeled by using enhanced dissipation coefficients.

Journal ArticleDOI
TL;DR: In this article, the authors investigated the potential use of a one time, Quad-Pol ALOS PALSAR L-band 25m data to estimate above-ground biomass using a water cloud model (WCM) in a wildlife sanctuary in India.

Journal ArticleDOI
TL;DR: A strategy based on a reduced-dynamics filtering of dual-frequency GPS measurements for precise baseline determination along with a dedicated scheme for integer ambiguity resolution is proposed, consisting of a hybrid sequential/batch algorithm based on the maximum a posteriori and integer aperture estimators.

Journal ArticleDOI
TL;DR: In this article, the anomalous amplitude nonlinear low frequency electrostatic soliton and supersoliton structures were studied in magnetized four-component auroral plasmas composed of a cold singly charged oxygen-ion fluid, Boltzmann distribution of hot protons and two distinct group of electron species.

Journal ArticleDOI
TL;DR: The results show that in such scenario, the double-differenced ionospheric correction residuals should not exceed ∼1/3 of the L1 wavelength for successful single-epoch ambiguity resolution.

Journal ArticleDOI
TL;DR: It is shown that incorporation of other GNSS constellation with GPS in ARAIM is needed to achieve LPV-200 Australia wide and the inclusion of BeiDou with GPS at two tests sites in Western and Eastern Australia demonstrates the promising potential of achieving this goal.

Journal ArticleDOI
TL;DR: BVRI photometric observations of Geosynchronous Earth Orbit (GEO) objects were conducted with the 15m Cassini Telescope located in Loiano, Italy The observatory is operated by the INAF (National Institute for Astrophysics) Astronomical Observatory of Bologna, Italy.