Cities are growing and encountering many changes over time due to population growth and migration. Identification and detection of these changes play important roles in urban management and sustainable development. Urban growth models are divided into two main categories: first cellular models which are further divided into experimental, dynamic, and integrated models and second vector models. ...

The Gaofen-3 (GF-3) satellite can provide digital elevation model (DEM) data from its interferogram outputs. However, the accuracy of these cannot be ensured without applying a surveying and mapping (SAM) calibration process, thus necessitating geometric interferometric technologies. In this paper, we propose an independent parameter decomposition (IPD) method to conduct SAM on GF-3 generate hi...

High resolution digital elevation models (DEMs) have been used in many applications such as civic planning, military mapping and navigation, natural hazard risk assessment, to name only a few. It has been a long history of using photogrammetry and dense ground surveys to draw the contour lines of the terrain and create the elevation model. Nowadays high precision DEMs with the vertical resoluti...

Effective flood assessment and management depend on accurate models of flood events, which in turn are strongly affected by the quality of digital elevation models (DEMs). In this study, HEC-RAS was used to route one specific water discharge through the main channel of the Eskilstuna River, Sweden. DEMs with various resolutions and accuracies were used to model the inundation. The results showe...

It is necessary to calibrate SAR data in order to use the data for science applications. When both polarimetric and interferometric data are collected simultaneously, these SAR data can be used for cross-calibration and verification. The frequency of polarimetric and interferometric data does not have to be the same for this purpose. For example, the NASA/JPL AIRSAR system can acquire C-band in...

Planetary ball mill is a powerful tool, which has been used for milling various materials size reduction. The discrete element method (DEM) was to simulate the dynamics of particle processes in planetary mill. This work includes calibration DEM parameters using EDEM Altair 2021.2 software, provides both faster workflows and results. iterative input changed close correlation between simulation e...

Interpretation of SAR images in areas with significant relief requires rigorous calibration considering local illuminated area and incidence angle effects if one is to be able to perform meaningful multitemporal analysis using images acquired with different geometries and/or sensors. Given the large swaths made available by RADARSAT, even comparison of the near vs. far range sections of the sam...

As the core and foundational technology, on-orbit radiometric calibration of a space-borne sensor is of great importance for quantitative remote sensing applications. As for the space-borne multi-camera mosaic imaging sensor, however, the currently available on-orbit radiometric calibration method cannot carry out the integrated processing of on-orbit absolute radiometric calibration and relati...

DEM parameters calibration is the most important step in preparing a model. At same time, lack of universal approach to complicates this process. The paper presents author’s creating based on physical meaning friction coefficients and conducting symmetrical experiments at full scale simulation, as well implementation form test rig. Several were carried out determine six material–boundary pairs....

Thin plate smoothing splines incorporating varying degrees of topographic dependence were used to interpolate 100 daily rainfall values, with the degree of data smoothing determined by minimizing the generalised cross validation. Analyses were performed on the square roots of the rainfall values. Model calibration was made difficult by short range correlation and the small size of the data set....