| Zugriffsnummer | 39658 |
| Dokumenttyp | Bericht |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Final publishable JRP report: Metrology for long distance surveying (SIB60) |
| Autor(in); Institution |
Pollinger, Florian; 5.4, Interferometrie an Maßverkörperungen, PTB-Braunschweig
Schön, Steffen; Leibniz Universität Hannover (LUH), Institut für Erdmessung, Hannover, GERMANY
Niemeier, Wolfgang; Technische Universität Braunschweig (TUBS), Institut für Geodäsie und Photogrammetrie, Braunschweig, GERMANY
Kuhlmann, Heiner; University of Bonn (UBO), Institute of Geodesy and Geoinformation, Bonn, GERMANY
Bhattacharya, Nandini; Delft University of Technology (TU Delft), Optics Research Group, Faculty of Applied Sciences, Delft, THE NETHERLANDS
Lesundak, Adam; Institute of Scientific Instruments (ISI), Academy of Sciences of the Czech Republic, Brno, CZECH REPUBLIC
Bosnjakovic, Alen; Institut za mjeriteljstvo Bosne i Hercegovine (IMBiH), Sarajevo, BOSNIA AND HERZEGOVINA
|
| Quelle/Jahr | (2017), 46 S. |
| Availability | [Online only] |
| URL | |
| Verlag | EURAMET |
| Freie Schlagworte | Length metrology ; Electro-optic distance measurement (EDM) ; GNSS ; traceability ; EMRP ; JRP SIB60 Surveying |
| Zusammenfassung | The report summarizes the results of the EMRP JRP SIB60 "Metrology for long distance surveying" running between July 2013 and June 2016. The project aimed to improve long-distance measurement methods by: 1. Improving optical measurements in air. In particular, the inline compensation of the refractive index along the whole beam path, and the impact of turbulences on the measurement, with a target relative uncertainty of 10-7 over a distance of 1 km. 2. Gaining a better understanding of the uncertainty of GNSS-based distance metrology. This will allow the development of a sound uncertainty model and an optimised field calibration procedure, targeting absolute uncertainties of 1 mm or better. 3. Developing concepts for the application of femtosecond laser-based many-wavelength interferometry to long-distance metrology with a targeted relative measurement uncertainty significantly better than 4x10-7 under controlled environments. 4. Developing solutions to improve state-of-the-art surveying practice, ranging from field-capable optical standards with relative uncertainties of 10-7 for long-distance baseline calibrations, over refined guidelines for the calibration of both EDM and GNSS-based distance meters, up to an extensive inter-comparison of major primary geodetic baselines in Europe. 5. Investigating different approaches to real-time monitoring of local ties at geodetic fundamental stations, both experimentally and theoretically. Thus, fundamental metrology for the Global Geodetic Observing System (GGOS) will be developed with an overall target to reduce the uncertainty of reference frames to 0.1 mm. |
| Version | V3.1 |