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Murat Mustafin and Hiba Moussa
The technology for determining a point?s coordinates on the earth?s surface using the global navigation satellite system (GNSS) is becoming the norm along with ground-based methods. In this case, determining coordinates does not cause any particular diff...
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Senlin Guan, Kimiyasu Takahashi, Keiko Nakano, Koichiro Fukami and Wonjae Cho
Many cropping systems, notably for rice or soybean production, rely largely on arable land levelness. In this study, an automated levelness assessment system (ALAS) for evaluating lowland levelness is proposed. The measurement accuracy of total station, ...
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Chunsheng Jiang, Yongjie Liu, Yu Jiang and Hengnian Li
This paper investigates the evolution of orbits around Jupiter and designs a sun-synchronous repeating ground track orbit. In the dynamical models, the leading terms of the Jupiter?s oblateness are J2 and J4 terms. A reasonable range of ground track repe...
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Jonathan Coto, W. Linwood Jones and Gerald M. Heymsfield
This paper deals with the validation of rain rate and wind speed measurements from the High-Altitude Wind and Rain Airborne Profiler (HIWRAP), which occurred in September 2013 when the NASA Global Hawk unmanned aerial vehicle passed over an ocean rain sq...
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Ryan G. Howell, Ryan R. Jensen, Steven L. Petersen and Randy T. Larsen
In situ measurements of sagebrush have traditionally been expensive and time consuming. Currently, improvements in small Unmanned Aerial Systems (sUAS) technology can be used to quantify sagebrush morphology and community structure with high resolution i...
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Huseyin Yurtseven
In this study, different in-situ and close-range sensing surveying techniques were compared based on the spatial differences of the resultant datasets. In this context, the DJI Phantom 3 Advanced and Trimble UX5 Unmanned Aerial Vehicle (UAV) platforms, Z...
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Minsu Kim
An airborne lidar simulator creates a lidar point cloud from a simulated lidar system, flight parameters, and the terrain digital elevation model (DEM). At the basic level, the lidar simulator computes the range from a lidar system to the surface of a te...
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Hao Wang, Venkatachalam Chandrasekar, Jianxin He, Zhao Shi and Lijuan Wang
As a manifestation of low-altitude wind shear, a downburst is a localized, strong downdraft that can lead to disastrous wind on the ground surface. For effective pre-warning and forecasting of downbursts, it is particularly critical to understand relevan...
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Roberto Peron and Enrico C. Lorenzini
A dedicated mission in low Earth orbit is proposed to test predictions of gravitational interaction theories and to directly measure the atmospheric density in a relevant altitude range, as well as to provide a metrological platform able to tie different...
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Travis J. Schuyler and Marcelo I. Guzman
The emission of greenhouse gases (GHGs) has changed the composition of the atmosphere during the Anthropocene. Accurately documenting the sources and magnitude of GHGs emission is an important undertaking for discriminating the contributions of different...
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