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Sensors 2016, 16(4), 470; doi:10.3390/s16040470

GNSS Precise Kinematic Positioning for Multiple Kinematic Stations Based on A Priori Distance Constraints

1
School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China
2
State Key Laboratory of Geo-information Engineering, Xi’an Research Institute of Surveying and Mapping, Xi’an 710054, China
3
Institute of Space Science, Shandong University, Weihai 264209, China
4
German Research Centre for Geosciences (GFZ), Potsdam 14473, Germany
5
Berlin University of Technology (TU Berlin), Berlin 10623, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Ana M. Bernardos
Received: 20 December 2015 / Revised: 28 March 2016 / Accepted: 30 March 2016 / Published: 1 April 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [1764 KB, uploaded 1 April 2016]   |  

Abstract

When applying the Global Navigation Satellite System (GNSS) for precise kinematic positioning in airborne and shipborne gravimetry, multiple GNSS receiving equipment is often fixed mounted on the kinematic platform carrying the gravimetry instrumentation. Thus, the distances among these GNSS antennas are known and invariant. This information can be used to improve the accuracy and reliability of the state estimates. For this purpose, the known distances between the antennas are applied as a priori constraints within the state parameters adjustment. These constraints are introduced in such a way that their accuracy is taken into account. To test this approach, GNSS data of a Baltic Sea shipborne gravimetric campaign have been used. The results of our study show that an application of distance constraints improves the accuracy of the GNSS kinematic positioning, for example, by about 4 mm for the radial component. View Full-Text
Keywords: airborne gravimetry; shipborne gravimetry; GNSS sensors system; precise kinematic positioning; a priori distance constraint; multiple kinematic stations airborne gravimetry; shipborne gravimetry; GNSS sensors system; precise kinematic positioning; a priori distance constraint; multiple kinematic stations
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

He, K.; Xu, T.; Förste, C.; Petrovic, S.; Barthelmes, F.; Jiang, N.; Flechtner, F. GNSS Precise Kinematic Positioning for Multiple Kinematic Stations Based on A Priori Distance Constraints. Sensors 2016, 16, 470.

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