The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper investigates the deployment of multi-tethered InSAR system applied in GMTI missions. Since the baselines for GMTI are usually short, the tethers whose length is almost identical to the baselines are short as well. As a consequence, the deploy mechanism should not work under this condition to avoid the unsuccessful deployment caused by the output error of the mechanism. Hence, the free deployment...
The assumption of reflection symmetry is one of the major deficiencies for the model based decompositions. The introduction of helix scattering component can mitigate the impact of this assumption limitedly, while it generates some new negative power problems simultaneously. In this paper, we expand the techniques of symmetric scatterer transformation in the Cameron and Huynen decompositions to the...
The ground-level digital elevation model (DEM) or digital terrain model (DTM) information are invaluable for environmental modeling, such as water dynamics in forests, canopy height, forest biomass, carbon estimation, etc. We propose to extract the DTM over forested areas from the combination of interferometric complex coherence from single-pass TanDEM-X (TDX) data at HH polarization and Digital Surface...
The accurate assessment of chlorophyll-a concentration in turbid coastal waters by means of remote sensing is quite challenging, due to the optical complexity of these waters. In this study, a semi-analytical approach is used to analyze the mathematical relationship between chlorophyll-a concentration and remote sensing reflectance, then neural network technology is proposed to simulate the mathematical...
Block adjustment can improve the accuracy of airborne InSAR data which covers large areas under the conditions of sparse control points, and it can improve the planar and vertical accuracy using a few of gound control points (GCPs). In this paper, we research the orthogonal decomposition of look vector model, three dimensional reconstruction model for airborne InSAR and the sensitivity equations at...
Water vapor, one of the green house gases, plays many important roles in global environmental change. For instance, it has an impact on global water and energy circulation, heat transmission and climate of the world [1–3]. Additionally, water vapor is an important parameter in atmosphere correction of remote sensing [2]. The distribution of atmospheric water vapor varies significantly in both space...
The central premise and main contribution of this presentation is to suggest that given opportunities to realize key technological advances over the next quarter century, it may be possible to significantly extend the skill and range of model based weather forecasting by enabling a two-way feedback between numerical weather prediction models and a Sensor Web based observing system.
Semi-empirical kernel-driven Bidirectional Reflectance Distribution Function (BRDF) model has been developed to retrieve the BRDF shapes of the observed surface from multi-angle measurements. At present, hemispherical diffuse irradiance is usually blended in the multi-angle measurements. The blend of diffuse irradiance will smooth the intrinsic BRDF shapes of observed surface. Therefore, there is...
Under the condition that the accuracy of the air-borne platform is unknown, an affine transformation model made up of unknown parameters such as rotation, scale and translation is proposed for Synthetic Aperture Radar (SAR) image geometric correction. These parameters in this model have real physical meanings compared to that in the traditional polynomial models. Based on the characteristics of geometric...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.