Results 221 to 230 of about 266,265 (255)

Control of Ground Interaction at the Zero-Moment Point for Dynamic Control of Humanoid Robots

Proceedings of the 2005 IEEE International Conference on Robotics and Automation, 2006
In order for stable control of humanoid robots, ground contact forces should be properly controlled for compensating the dynamic disturbances caused by unactuated body movement. The stability in the sense of the zero-moment point (ZMP), guaranteeing secure contacts during control, is a necessary condition for stable motion control.
Jonghoon Park, Youngil Youm, Wan Kyun Chung   +2 more
openaire   +1 more source

USING CORNER REFLECTORS AS GROUND CONTROL POINTS IN GROUND BASED SAR INTERFEROMETRY

SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings, 2017
Ground based radar interferometry is one of the currently used, remote measurement technologies allowing to determine the displacements of the monitored area. This technology use a radar operating in the microwave band, which emits a beam in the direction of the monitored area, and then after reflection processes and registers it in the form of radar ...
openaire   +2 more sources

High-Accuracy Stereo Matching Based on Adaptive Ground Control Points

IEEE Transactions on Image Processing, 2015
This paper proposes a novel high-accuracy stereo matching scheme based on adaptive ground control points (AdaptGCP). Different from traditional fixed GCP-based methods, we consider color dissimilarity, spatial relation, and the pixel-matching reliability to select GCP adaptively in each local support window.
Chenbo Shi, Guijin Wang, Xuanwu Yin, Xiaokang Pei, Bei He, Xinggang Lin   +5 more
openaire   +2 more sources

Ground-target tracking control of Earth-pointing satellites

AIAA Guidance, Navigation, and Control Conference and Exhibit, 2000
Many on-board payloads for monitoring, communication and Earth imaging have extensive requirements for target tracking maneuvers in many space missions. A quaternion-bas ed PID feedback control for ground-target tracking of a three-axis stabilized Earth-pointing satellite is systematically analyzed.
Xiaojiang Chen, Willem Steyn, Yoshi Hashida   +2 more
openaire   +1 more source

Navigation of satellite measurements without ground control points

International Journal of Remote Sensing, 1993
Abstract The minimum of information on satellite dynamics (a part of celestial mechanics) which is needed to navigate operational polar orbiting meteorological satellites either for direct or inverse referencing without ground control points, is presented. This software is tailored to the orbit information available.
Straka, J., Klokocnik, J., Grassl, H.
openaire   +2 more sources

LaForeT Ground control points and Landscape borders

Terrestrial ground truthing of land use has been carried out between 2016 and 2019. Land cover types classification is identical to mapping of land use types.
Ferrer Velasco, Rubén, Lippe, Melvin, Günter, Sven, Jany, Christina, Mfuni, Tiza, Rebuyas, Rina Shianne, Tamayo, Fabian, Fischer, Richard, Eguiguren, Paul, Kazungu, Moses, Nansikombi, Hellen, Ojeda-Luna, Tatiana, Wiebe, Pia   +12 more
openaire   +1 more source

Automatic relocation of ground control points in Landsat imagery†

International Journal of Remote Sensing, 1983
Abstract Images obtained from the Landsat multispectral scanner are not provided in any normally recognized map projection system, so it is often necessary for a transformation to be made. This is usually done with the aid of ground control points, whose locations on the ground (or on a map)are accurately known and which can be accurately located ...
openaire   +1 more source

Ground control pointing and geometric transformation of satellite imagery

International Journal of Remote Sensing, 1986
Abstract LANDSAT imagery has been corrected for Earth curvature and rotation, satellite attitude errors and sensor non-linearities, it still contains significant geometric distortions with the centre of the scene only located to an accuracy of a few kilometres.
openaire   +1 more source

SAR ground control point identification with the aid of high resolution optical data

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016
Only until recently, it has been demonstrated that absolute localization with centimeter accuracy can be achieved for manually matched Persistent Scatterer (PS)s from TerraSAR-X images acquired from cross-heading geometries [1]. This paper describes an automatic algorithm for absolute localization of natural PSs in SAR images, where the detection of ...
Sina Montazeri, Xiao Xiang Zhu 0001, Ulrich Balss, Christoph Gisinger, Yuanyuan Wang 0002, Michael Eineder, Richard Bamler   +6 more
openaire   +1 more source

A method for InSAR phase-offset calculation without using ground control points

2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS, 2013
Synthetic Aperture Radar Interferometry (InSAR) allows the generation of Digital Elevation Models (DEMs) exploiting the phase difference (interferogram) of SAR data pairs relevant to the same illuminated area and received by slightly different look angles. Within the processing chain leading from the acquired SAR data pair to the final InSAR DEM, it is
S Perna, P Berardino, C Esposito, R Lanari, A Pauciullo, C Wimmer   +5 more
openaire   +3 more sources