Performance Assessment of Multi-GNSS Precise Velocity and Acceleration Determination over Antarctica

A conventional Differential GPS (DGPS) techniques-based velocity and acceleration method (named here as ‘DVA’) may be difficult to implement in the Antarctic as there is a sparse distribution of reference stations over Antarctica. Thus, in order to overcome the baseline limitations and to obtain hig...

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Bibliographic Details
Published in:Journal of Navigation
Main Authors: Li, Min, Neumayer, Karl-Hans, Flechtner, Frank, Lu, Biao, Förste, Christoph, He, Kaifei, Xu, Tianhe
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2018
Subjects:
Ocean Engineering
Oceanography
Antarctic
The Antarctic
Antarc*
Antarctica
Online Access:http://dx.doi.org/10.1017/s0373463318000656
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0373463318000656
Description
Summary:A conventional Differential GPS (DGPS) techniques-based velocity and acceleration method (named here as ‘DVA’) may be difficult to implement in the Antarctic as there is a sparse distribution of reference stations over Antarctica. Thus, in order to overcome the baseline limitations and to obtain highly accurate and reliable velocity and acceleration estimates for airborne gravimetry, a network-based velocity and acceleration determination approach (named here as ‘NVA’), which introduces a wide network of stations and is independent of precise clock information, is applied. Here its performance for velocity and acceleration determination is fully exploited by using Global Positioning System (GPS), GLONASS, Galileo and BeiDou observations. Additionally, a standalone receiver-based method named ‘SVA’, which requires precise clock information, is also implemented for comparison. During static tests and a flight experiment over Antarctica, it was found that the NVA method yields more robust results than the SVA and DVA methods when applied to a wide area network. Moreover, the addition of GLONASS, Galileo and BeiDou systems can increase the accuracy of velocity and acceleration estimates by 39% and 43% with NVA compared to a GPS-only solution.

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