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Showing papers in "Advances in Space Research in 2012"


Journal ArticleDOI
TL;DR: The main objective of this study focuses on the comparison of three classification tools for Landsat images, which are maximum likelihood classification (MLC), support vector machine and artificial neural network (ANN), in order to select the best method among them.

298 citations


Journal ArticleDOI
TL;DR: In this article, the theoretical underpinnings and characteristics of three key global remotely sensed products are reviewed, and the seasonal and spatial patterns of agreement and disagreement among them are discussed, and current and future directions in their application and development.

258 citations


Journal ArticleDOI
TL;DR: The first public database of high-energy observations of all known Galactic supernova remnants (SNRs) is presented in this article, which aims at bridging the already existing census of Galactic SNRs (primarily made at radio wavelengths) with the evergrowing but diverse observations of these objects at high-energies.

196 citations



Journal ArticleDOI
TL;DR: In this paper, the authors reassess this approach in light of recent advances in low-cost, light-weight modular design for large mirrors, calculations of laser-induced orbit changes and in design of repetitive, multi-kilojoules lasers, that build on inertial fusion research.

144 citations


Journal ArticleDOI
TL;DR: In this article, a new model for the solar radiation pressure on GPS satellites is presented that is based on a box-wing satellite model, and assumes nominal attitude, which can be adjusted to fit the GPS tracking data.

123 citations


Journal ArticleDOI
TL;DR: In this article, spectral image processing methods were applied to ASTER data for mapping hydrothermal alteration zones associated with porphyry copper mineralization and related host rock, including phyllic, argillic and propylitic mineral assemblages.

119 citations


Journal ArticleDOI
TL;DR: A review of recent results on mesoscale ocean dynamics derived from satellite altimetry is provided in this article, where the authors provide a review of the recent results of high-resolution data collected by the satellite.

118 citations


Journal ArticleDOI
TL;DR: In this paper, an advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and Phased Array L-band Synthetic Aperture Radar (PALSAR) images covering the Um Rus area in the Central Eastern Desert of Egypt were evaluated for mapping geologic structure, lithology and gold-related alteration zones.

115 citations


Journal ArticleDOI
TL;DR: A novel approach is developed accordingly in which the deterministic representation is further refined by a stochastic process for each satellite with an empirical model for its power density, which shows significant improvements in terms of positioning accuracy and convergence time.

100 citations


Journal ArticleDOI
TL;DR: In this paper, the thermal models and dynamic models of altitude scientific balloons are established and a simulation program is developed based on the models, and the thermal performances of a super pressure balloon are simulated.

Journal ArticleDOI
TL;DR: Li et al. as mentioned in this paper explored the relationship between DMSP/OLS night-time average light index and the poverty index using regression analysis in SPSS and a good positive linear correlation was modelled, with R 2 equal to 0.854.

Journal ArticleDOI
TL;DR: The paper demonstrates how significant deflections can be obtained with relatively small sized, easy-to-control spacecraft.

Journal ArticleDOI
Mehmet Şahin1
TL;DR: In this paper, the authors used artificial neural network (ANN) to forecast monthly mean air temperature based on remote sensing and ANN data by using twenty cities over Turkey, and the best linear correlation coefficient (R), and root mean squared error (RMSE) between the estimated and measured values for monthly air temperature with ANN and remote sensing method were found to be 0.991-1.254 K, respectively.

Journal ArticleDOI
TL;DR: The Committee on Space Research (COSPAR) Panel on Exploration (PEX) was chartered to provide independent scientific advice to support the development of exploration programs and to safeguard the potential scientific assets of solar system objects as discussed by the authors.

Journal ArticleDOI
TL;DR: In this paper, the authors studied particle acceleration at an oblique shock by extending their earlier particle acceleration and transport in heliosphere (PATH) code to include shocks with arbitrary BN, where BN is the angle between the upstream magnetic field and the shock normal.

Journal ArticleDOI
TL;DR: A crater detection approach that utilizes both shape and texture features to identify efficiently sub-kilometer craters in high resolution panchromatic images is proposed, which is a significant improvement over the previous CDA based exclusively on the shape features.

Journal ArticleDOI
TL;DR: In this article, the authors provided the comprehensive results on the occurrence and statistics of small-scale eddies in the three inner seas (the Baltic, Black and Caspian) using satellite synthetic aperture radar images.


Journal ArticleDOI
TL;DR: A novel trajectory tracking control method for an underactuated stratospheric airship is presented, based on the trajectory linearization control (TLC) theory, which shows that the controlled closed-loop system is exponentially stable.

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the monitoring of rice cropping intensity in the upper Mekong Delta, Vietnam (from 2001 to 2007) using time-series MODIS NDVI 250m data.

Journal ArticleDOI
TL;DR: In this paper, the authors discuss a number of solar and space problems where nonquasilinear diffusion is found, and illustrate anomalous transport regimes, for which the mean square deviation grows nonlinearly with time.

Journal ArticleDOI
TL;DR: In this article, the plasmaspheric electron content (PEC) was estimated by comparison of GPS TEC observations and FORMOSAT-3/COSMIC radio occultation measurements at the extended solar minimum of cycle 23/24.

Journal ArticleDOI
TL;DR: In this paper, the authors analyzed the noise properties of continuous GPS time series of CMONOC for the unfiltered, filtered solutions and also the common mode signals in terms of power law plus white noise model.

Journal ArticleDOI
TL;DR: The present analysis suggests the need of critical analysis of the BPANN in terms of selection of the best transfer function and other network parameters for the better results.

Journal ArticleDOI
TL;DR: In this article, a tri-axial ellipsoidal model of an LEO object, a Cosmos 2082 rocket body, including its rotational axis direction, rotation period, precession, and a compositional parameter, using only light curve data from an optical telescope was derived.

Journal ArticleDOI
TL;DR: In this article, the authors explore the uncertainties in, hypothesized connections between a series of processes that could explain two long-standing puzzles; those of (1) the observed winter storm vorticity responses to atmospheric energy inputs that change the ionosphere-earth current density, Jz, that appear to involve storm invigoration, and (2) changes in anti-cyclonic blocking and circulation that include the observed colder winters in Great Britain and western Europe at solar minima, and especially at extended solar minimum.

Journal ArticleDOI
TL;DR: In this article, the authors present the results of a Calval analysis performed for the Cryosat-2 mission over ocean, mainly for waves and Sea Level Anomaly applications.

Journal ArticleDOI
TL;DR: In this paper, an adaptive neuro-fuzzy interface system (ANFIS) was used to identify landslide-related factors using only remotely sensed data and to present landslide susceptibility maps using a geographic information system, data-mining models, an artificial neural network (ANN), and an ANFIS.

Journal ArticleDOI
Chunxiao Xu1, Xiao Yin1, Yan Lv1, Changzhe Wu1, Yuxia Zhang1, Song Tao1 
TL;DR: The effect of geomagnetic field on the growth of Arabidopsis and its mechanism of action are poorly understood as mentioned in this paper, however, the effect of cryptochrome has been well demonstrated.