Experimental determining of horizontal movements of the water tower reservoirs by GB-RAR

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985556%3A_____%2F21%3A00563108" target="_blank" >RIV/67985556:_____/21:00563108 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/1755-1315/906/1/012063" target="_blank" >http://dx.doi.org/10.1088/1755-1315/906/1/012063</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1755-1315/906/1/012063" target="_blank" >10.1088/1755-1315/906/1/012063</a>

Result language

angličtina

Original language name

Experimental determining of horizontal movements of the water tower reservoirs by GB-RAR

Original language description

Ground-based radar interferometry (GBRI) with ground-based real aperture radar (GB-RAR) is most often used for monitoring vertical deflections of bridge structures caused by vehicle passages. This paper presents an experimental determining of the horizontal dynamic movements of water tower reservoirs by GB-RAR. Determining the dynamic movements of water tower reservoirs is more complicated precisely because the movement of the reservoir is influenced not only by external influences, such as wind, but also by the movement of water mass in the reservoir. The resulting oscillation is then a composite oscillation of multiple frequencies. Next, in the case of routine determination of vertical deflections of bridge structures, it is reasonable to assume a predominant deflection of the structure in this one particular direction. But in the case of tower structures such as reservoirs, it is necessary to assume their movements (oscillations) in the entire horizontal plane. The movements can be circular, elliptical, straight, spiral, or even completely irregular. This means using at least two radars to simultaneously determine 2D movements (in both perpendicular directions of the horizontal plane). In the optimal case, the radars aim at the monitored object in approximately perpendicular directions to each other, and the resulting motion vectors in the horizontal plane are calculated from LOS measurements. The processing of measurements from both radars raises other problems, namely accurate time synchronization of radar measurements. In case of tower structures, time synchronization cannot be solved by coincidence of oscillation amplitude peaks, since the peaks from different radar views may not occur simultaneously. Therefore, alternative solution is offered in this contribution. Purpose of this contribution is to design and verify a procedure for accurate determination of horizontal movements of tower reservoirs with sufficiently accurate oscillation characteristics. The procedure was experimentally verified in practice on a real water reservoir in central Bohemia. The results of the experiment confirm the expected benefits of simultaneous measurements by two radars for determining horizontal dynamic movements of water tower reservoirs by GB-RAR.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/VI20192022167" target="_blank" >VI20192022167: The advanced technology of rapid determination of bridges deformation by radar interferometry and its use in diagnostics</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

IOP Conference Series: Earth and Environmental Science

ISBN

—

ISSN

1755-1315

e-ISSN

1755-1307

Number of pages

16

Pages from-to

012063

Publisher name

IOPscience

Place of publication

Madeira

Event location

Praha

Event date

Sep 6, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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