Geo-fit approach to the analysis of limb-scanning satellite measurements

The study is devoted to the analysis of the features of the change in the Equivalent Water Height (EWH) parameter over the geoid based on satellite measurements of space systems. The study used the GRACE and GRACE-FO satellite data archive. The assessment was carried out on Earth as a whole, including land areas and the World Ocean. Interpretation of the anomalous state of the geoenvironment is performed using digital maps of the spatial distribution of the EWH parameter based on the histogram approach and correlation analysis. Also, a comparative analysis of the studied data from the GRACE mission and data from the new GRACE-FO satellite system launched into orbit in the summer of 2018 was carried out.

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Improving Estuarine Transport Models using Satellite Measurements

10.21236/ada597722 ◽

2013 ◽

Author(s):

Stefan A. Talke

Keyword(s):

Satellite Measurements ◽

Transport Models

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The impact of duration observations on precision of results GNSS measurements

Geodesy and Cartography ◽

10.22389/0016-7126-2017-921-3-7-13 ◽

2017 ◽

Vol 921 (3) ◽

pp. 7-13 ◽

Cited By ~ 1

Author(s):

S.V. Grishko

Keyword(s):

Measurement Accuracy ◽

Functional Dependence ◽

Observation Time ◽

Satellite Networks ◽

Satellite Measurements ◽

Proposed Model ◽

Actual Error ◽

Gnss Measurements ◽

The Impact ◽

Qualitative Characteristics

This paper shows that the accuracy of relative satellite measurements depend not only on the length of the baseline, as it is regulated by the rating formula of accuracy of GNSS equipment, but also on the duration of observations. As a result of the strict adjustment much redundant satellite networks with different duration of observations obtained covariance matrix of baselines, the most realistic reflecting the actual error of satellite observations. Research of forms of communication of these errors from length of the baseline and duration of its measurement is executed. A significant influence of solar activity on accuracy of satellite measurements, in general, leads to unequal similar series of measurements made at different periods, for example, in the production of monitoring activities. The model of approximation of the functional dependence of accuracy of the baseline from its length and duration of observations having good qualitative characteristics is offered. Based on the proposed model, we analyzed the dynamics of changes in measurement accuracy with an increase in observation time.

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