Auflistung nach Schlagwort "Units of measurement"

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  • 0.75 atoms improve the clock signal of 10,000 atoms 
    Kruse, I.; Lange, K.; Peise, J.; Lücke, Bernd; Pezzè, L.; Arlt, Jan J.; Ertmer, Wolfgang; Lisdat, C.; Santos, Luis; Smerzi, A.; Klempt, Carsten (Bellingham, WA : S P I E - International Society for Optical Engineering, 2017)
    Since the pioneering work of Ramsey, atom interferometers are employed for precision metrology, in particular to measure time and to realize the second. In a classical interferometer, an ensemble of atoms is prepared in ...
  • Application of an autonomous robot for the collection of nearshore topographic and hydrodynamic measurements 
    Wübbold, Frauke; Hentschel, Matthias; Vousdoukas, Michalis I.; Wagner, Bernardo (Reston : American Society of Civil Engineers, 2012)
    Beach topographic and hydrodynamic measurements are essential for coastal geology and engineering studies as well as sustainable coastal management. Standard approaches involve either time-consuming manual data acquisition ...
  • Calibration-measurement unit for the automation of vector network analyzer measurements 
    Rolfes, I.; Will, B.; Schiek, B. (Göttingen : Copernicus GmbH, 2008)
    With the availability of multi-port vector network analyzers, the need for automated, calibrated measurement facilities increases. In this contribution, a calibrationmeasurement unit is presented which realizes a repeatable ...
  • Coupling of relative intensity noise and pathlength noise to the length measurement in the optical metrology system of LISA Pathfinder 
    Wittchen, A.; et al.; LPF Collaboration (Bristol : Institute of Physics Publishing, 2017)
    LISA Pathfinder is a technology demonstration mission for the space-based gravitational wave observatory, LISA. It demonstrated that the performance requirements for the interferometric measurement of two test masses in ...
  • Development of an edge sensor based on polyview optics and laser triangulation principle 
    Li, Yinan; Bossmeyer, Hagen; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2016)
    Common 2D laser line triangulation sensors allow a 2D profile measurement in a single line. To scan samples with great curved surfaces like edges, a single laser line triangulation sensor is insufficient. To measure the ...
  • Development of digital aerial cameras 
    Jacobsen, Karsten (Göttingen : Copernicus GmbH, 2010)
    Digital aerial cameras have replaced analogue aerial cameras in several countries. The development for operational aerial photogrammetry started with the line scan camera ADS40, followed by Z/I Imaging DMC and Vexcel Imaging ...
  • Fast in-situ tool inspection based on inverse fringe projection and compact sensor heads 
    Matthias, Steffen; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2016)
    Inspection of machine elements is an important task in production processes in order to ensure the quality of produced parts and to gather feedback for the continuous improvement process. A new measuring system is presented, ...
  • LISA Pathfinder: Optical Metrology System monitoring during operations 
    Audley, Heather E.; LISA Pathfinder Collaboration (Bristol : Institute of Physics Publishing, 2017)
    The LISA Pathfinder (LPF) mission has demonstrated excellent performance. In addition to having surpassed the main mission goals, data has been collected from the various subsystems throughout the duration of the mission. ...
  • Mobile quantum gravity sensor with unprecedented stability 
    Freier, C.; Hauth ,M.; Schkolnik, V.; Leykauf, B.; Schilling, Manuel; Wziontek, H.; Scherneck, H.-G.; Müller, J.; Peters, A. (Bristol : Institute of Physics Publishing, 2016)
    Changes of surface gravity on Earth are of great interest in geodesy, earth sciences and natural resource exploration. They are indicative of Earth system's mass redistributions and vertical surface motion, and are usually ...
  • Optical testbed for the LISA phasemeter 
    Schwarze, Thomas S.; Fernández Barranco, G.; Penkert, D.; Gerberding, Oliver; Heinzel, Gerhard; Danzmann, Karsten (Bristol : Institute of Physics Publishing, 2016)
    The planned spaceborne gravitational wave detector LISA will allow the detection of gravitational waves at frequencies between 0.1 mHz and 1 Hz. A breadboard model for the metrology system aka the phasemeter was developed ...
  • Relativistic geodesy 
    Flury, Jakob (Bristol : Institute of Physics Publishing, 2016)
    Quantum metrology enables new applications in geodesy, including relativistic geodesy. The recent progress in optical atomic clocks and in long-distance frequency transfer by optical fiber together pave the way for using ...