The correct answer is (4) because ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer), RADARSAT-1, and SRTM (Shuttle Radar Topography Mission) are all spaceborne sensors that provide data useful for studying terrestrial surface topography.

2022年10月14日 · In this thesis, an optimized version of the sensor is presented, which is mainly used for comparison measurements. It is shown that this high-speed sensor is an appropriate alternative to other...

2019年1月1日 · TLS is a fundamental tool used to detect, classify and monitor slopes and has the potential to describe the slope topography, geomorphology and deformation dynamics; this allows the creation of three-dimensional (3D) terrain models and the realization of a multi-temporal analysis by means of spatial comparisons [14], [15], [16], [17], [18].

2000年1月1日 · This paper presents some aspects of design approach, modeling, and experimental measurement results of a fiber optic-based surface topography measurement sensor that can measure surface roughness as well as the distance between the sensor tip and a surface and surface inclination angles.

2018年6月27日 · For the measurement of surface topographies in the micro- and nanometer range a lot of different methods exist. Typical 3D sensors used in industry and science are atomic force microscopes, tactile stylus instruments, confocal microscopes and white light interferometers. In this contribution a multisensor measuring system will be presented.

2021年3月17日 · The findings presented herein provide insights into cost–benefit of purchasing various sUAS and sensors, precision of the sensors across a gradient of complex terrain, and their ability to capture high-definition topography, which is a fundamental boundary condition in numerical and physical modeling experiments as well as change detection ...

2021年1月25日 · This study provides an evaluation of multiple sensors by examining their precision and ability to capture topographic complexity. Five different small unmanned aerial systems (sUAS) were evaluated, each with a different camera, Global Navigation Satellite System (GNSS), and Inertial Measurement Unit (IMU).

studying terrestrial land cover vegetation, land surface topography, volcano monitoring, global sea level, and polar ice sheet level changes caused by climatic changes.

2014年8月15日 · Terrestrial laser scanning (TLS), also referred to as terrestrial LiDAR, has the potential to measure the canopy structure with high spatial detail and accuracy. Vertical plant profiles, which describe the plant area per unit volume (PAVD) as a function of height, are often used to quantify the vertical structure.

In order to measure inner surface roughness of small holes nondestructively, a new fiber optic sensor is researched and developed. Firstly, a new model for surface roughness measurement is proposed,… A fiber optic-based off-focus surface topography sensor is …