Wyniki wyszukiwania - BazTech

1

Badanie charakterystyk dynamicznych wysokiego komina przemysłowego

Górski P., Napieraj M.

Inżynieria i Budownictwo

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2017

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R. 73, nr 1

39--44

PL

Przedstawiono wyniki obliczeń charakterystyk dynamicznych komina przemysłowego na podstawie pomiarów jego przemieszczeń spowodowanych słabymi podmuchami wiatru. Pomiary wykonano techniką satelitarną GPS w trzech punktach konstrukcji usytuowanych na różnych wysokościach. Obliczenia wykonano metodą dekompozycji w dziedzinie częstotliwości. Omówiono podstawy teoretyczne zastosowanej metody i praktyczne aspekty mające wpływ na dokładność obliczeń.

EN

The paper presents the calculation results of dynamic characteristics of a tall industrial chimney based on measurements of horizontal displacements due to weak wind. The measurements were carried out by using GPS technology. The calculations were made by Frequency Domain Decomposition Method. The theoretical basis of the applied method and some practical aspects, which have an influence on the accuracy of the calculations, are described.

2

Porównanie pomiarów z inwentaryzacji linii wysokiego napięcia za pomocą lotniczego skaningu laserowego oraz tachimetrii

Janicka J., Błaszczak-Bąk W., Sobieraj A.

Czasopismo Inżynierii Lądowej, Środowiska i Architektury / Journal of Civil Engineering, Environment and Architecture

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2015

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z. 62, nr 4

155--166

PL

Inwentaryzację linii energetycznych można przeprowadzić korzystając ze wsparcia lotniczego skaningu laserowego oraz innych technologii takich jak metody klasyczne czy GPS. Metody te wymagają innego nakładu finansowego, sprzętu i liczby osób opracowujących dane. W pracy porównano wyniki pomiarów inwentaryzacji linii elektroenergetycznych wysokiego napięcia 110 kV relacji Modzyszyn-Tczew.

EN

The inventory of power lines can be performed using technology ALS and another technologies such as classical methods or GPS. These methods require a different financial effort, equipment and the number of people developing the data. The study compared the results of measurements of inventory of the high voltage power line between two objects Modzyszyn and Tczew.

3

Monitoring mobilności studentów jako narzędzie do oceny użyteczności infrastruktury miejskiej wybranego obszaru na przykładzie centrum miasta Dąbrowa Górnicza

Sierpiński G., Sobczak P.

Logistyka

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2014

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nr 6

9514--9521

PL

Identyfikacja przemieszczeń i punktów docelowych pozwala na dokonanie oceny istniejącej infrastruktury miejskiej. W artykule przedstawiono zastosowanie technologii GPS, jako metody na określania użyteczności terenu. Zestawiono też część wyników pilotażowych badań w tym zakresie, szczególnie w odniesieniu do identyfikacji najbardziej atrakcyjnych dla respondentów miejsc, punktów parkowania pojazdów oraz przystanków transportu zbiorowego. Przedstawiono także możliwość monitorowania przebiegu trasy między konkretnymi dwoma punktami (uczelnia – przystanek PKP). Przedstawione w artykule wyniki stanowią jedynie wstęp do szerszych badań, które pozwolą na rozszerzenie przedstawionej metody o szereg innych elementów, których koncepcje przedstawiono w innych publikacjach.

EN

Identification of realized travels and destinations allows to evaluate the existing urban infrastructure. The article describes the use of GPS technology as a method for determining the usefulness of the site. Also summarizes some of the results of pilot studies in this area, particularly with regard to the identification of the most attractive places for respondents, points of vehicle parking and public transport. Also shown the ability to monitor the route between specific two points (university - rail station). Results presented in this article are only a prelude to a wider research, which will allow the extension of the presented method on a number of other elements, which concepts are shown in other publications.

4

Metoda dynamicznej inwentaryzacji infrastruktury kolejowej

Młyńczak J., Celiński I., Sierpiński G.

Logistyka

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2014

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nr 6

7593--7601

PL

W artykule przedstawiono propozycję usprawnienia procesów inwentaryzacji w odniesieniu do infrastruktury kolejowej. Opisana metoda dzięki wykorzystaniu technologii GPS oraz ruchomego obserwatora (umieszczonego w kabinie pojazdu trakcyjnego) pozwala na realizację procesu inwentaryzacji w sposób efektywny, a także daje możliwość wielokrotnej powtarzalności tego procesu w niedługich odstępach czasu. Zastosowanie proponowanej metody może mieć bezpośrednie przełożenie na poprawę bezpieczeństwa ruchu kolejowego z uwagi na możliwość określania braków i uszkodzeń ważnych elementów infrastruktury kolejowej. Przeprowadzone testy (próbne inwentaryzacje na szlakach) dowodzą, że metoda może być stosowana w praktyce.

EN

The article presents a proposal to improve inventory processes in relation to the railway infrastructure. The method described by using GPS technology and a moving observer (located in the cab of the vehicle traction) allows for the implementation of the inventory process in an efficient manner, and also gives the possibility of multiple repetition of this process in short intervals. The application of the proposed method can have a direct impact on improving the safety of rail traffic due to the ability to determine the deficiency and failures of important elements of the railway infrastructure. The tests (test inventories lanes) show that the method can be applied in practice.

5

Gathering Information About Tourist and Recreation Activities Within the Area of Lodz Agglomeration Using Mobile Technologies

Strzecha K., Koszmider T.

Image Processing & Communications

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2012

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Vol. 17, no. 4

365--372

EN

In the paper the mobile technologies based distributed system for the improvement of the current situation of cyclists moving within the Lodz agglomeration was presented. When finished, system may contribute to significant improvements in safety and comfort of cyclists within the Lodz agglomeration and, consequently, to popularize cycling as an everyday means of transportation and recreation. In its expanded form, system should help to increase the tourist attractiveness of Lodz and the surrounding area and the effective promotion of Lodz agglomeration, as a friendly and interesting place for visitors who prefer various forms of tourism and recreation.

6

Analiza pola deformacji pogórniczych na podstawie pomiarów w technologii GPS

Klich J., Piwowarski W., Stewarski E.

Prace Naukowe Instytutu Geotechniki i Hydrotechniki Politechniki Wrocławskiej. Konferencje

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2007

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Vol. 76, nr 42

339-348

PL

W pracy przeprowadzono analizę niestacjonarnego procesu przemieszczeń punktów terenu górniczego. Scharakteryzowano procedurę wyznaczania zmian lokalizacji wyróżnionych punktów przy zastosowaniu technologii GPS. W efekcie uzyskano opis wektorowego pola przemieszczeń. W dalszej części przedstawiono matematyczną metodę szacowania stanu zagrożenia obiektów na terenie górniczym w ujęciu analiz wielowymiarowych. Opracowano procedurę grupowania obiektów usytuowanych w wielo-parametrowym polu deformacji pozwalającą przyporządkować dany obiekt, na podstawie wartości p-cech. do jednego z podzbiorów o maksymalnej funkcji podobieństwa.

EN

The papcr presents the analysis of the non-stationary process of dislocations of the points within the mining area, The authors discuss the procedurę applied to the assessment of the location change of the marked observation points as carried out in accordance with GPS technology, As a result the description of the vectoriaI dislocation field has been obtained, Furthermore the paper presents a mathematical method of hazard estimation concerning the buildings located within the mining area as seen from the point of view of multidimensional analyses, An adequate procedurę has been worked out with the aim of grouping the objects situated in a multi-parametrical field of deformations. This procedurę makes it possible to assign the given object. on the basis of the values ofp-features, to one of the subsels marked by the maximum similarity function.

7

Gps-technology for surveying waste deposits

Breuer P.

Zeszyty Naukowe. Inżynieria Środowiska / Politechnika Opolska

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2005

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Vol. 310, z. 6

21-27

EN

Surveying waste deposits aims to supervise and to check the volume of deposit, its height, shape and form. As well the inclination of the slopes has to be monitored to avoid too steep slopes causing landslides. Another point of interest is to supervise the deposit of contaminated waste and to monitor the compression and settings of filled up masses. This paper is an extract of a Power Point presentation from which the figures have been taken.

PL

Dzięki odwzorowaniu kształtu niecki składowiska odpadów możliwe jest określenie jego pojemności. Badania możliwe są przy pomocy techniki geograficznego systemu położenia GPS. W pracy dokonano przeglądu metod pomiarowych. Badania zmian kształtu niecki w czasie umożliwią monitorowanie procesów zachodzących w składowisku.

8

Usage of the geoid surface with geological-geophysical data for interpretation of recent crustal movements determined by GPS

Pribicević B., Medak D., Prelegovic E.

Reports on Geodesy

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2001

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z. 2/57

213-217

9

The role of GPS permanent stations in realisation of geocentric reference frame

Hefty J., Gerhatova L., Kartikova H.

Reports on Geodesy

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2001

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z. 4/59

39-50

EN

Determination of geocentric coordinates using the GPS permanent stations. Precision of precise point positioning as a function of baseline length, observation duration and uncertainty of instantaneous reference permanent station position. Design of permanent station network in Slovakia and the current situation.

10

The geodetic measurement methods for the demarcation of phragmites Australis Communities in the chosen cross-sections of upper Biebrza tributaries

Pachuta K., Pachuta A.

Reports on Geodesy

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2001

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z. 2/57

195-202

EN

The water plant effects on the hydrological conditions in the river valleys, riverbeds and surrounding areas is necessary in many scientific and practical fields. The water- and bank-zone plants stabilise the riverbeds and form the hydraulic conditions in the rivers. They often overgrown the water regions and make them shallow. The satellite GPS-RTK methods possibilities for the Phragmitetum communities' ranges and the riverbed parameters knowledge are quick and comfortable. The analyses of the Phragmitetmm influence on the flow condition are the aim of this paper.

11

Precision analysis of position and length determination through global positioning system phase observation

Melicher J.

Reports on Geodesy

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2001

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z. 5/60

7-15

EN

Mathematical model of error influence in phase and satellities coordinates determination on positioning precision. Use of GPS observations in local geodynamical network for empirical precision analysis of position and lenght analysis. Precision dependency of determination on baseline lenght. Conclusions for practical use.

12

On some operational aspects of permanent GPS stations

Kostelecky J.

Reports on Geodesy

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2001

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z. 4/59

51-56

13

GOP data center for near real-time GPS analysis

Dousa J.

Reports on Geodesy

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2001

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z. 2/57

149-152

EN

The GPS meteorology - meaning the analysis of GPS data for a near real-time monitoring of the tropospheric path delays - is good example where the applications of the GPS can actually lead up to. Not only this method makes the accurate near real-time (NRT) GPS processing potentially interesting. Here, we present the topic related to any NRT analysis - NRT data supply together with the necessary products and actual site/system/product information. We call the NRT analysis here such a processing based on hourly RINEX files with results accessible within a few hours (1-3). This paper shows our motivations and ideas behind the establishment of the assistant local data center at the Geodetic Observatory Pecny (GOP LDC), ftp://pecny.asu.cas.cz/LDC/. This data center is the basis for all NRT analysing activities at the GOP analysis center (GOP AC), http://pecny.asu.cas.cz/AnalysC.html. Furthermore, we explain here the general organization, the functions and the benefits of GOP LDC in its status for February 2001.

14

Further results in geodetic monitoring of deformations in a water reservoir due to cyclic changes of water level

Woźniak M., Pruszyński W., Wojciechowski J., Jastrzębski S.

Reports on Geodesy

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2001

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z. 2/57

169-174

15

CERGOP-2 2001 GPS campaign processed by WUT analysis centre

Liwosz T.

Reports on Geodesy

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2001

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z. 5/60

43-50

16

Appropriate global geopotential model for combined determination of the quasigeoid

Stoyanov L., Ivanov R.

Reports on Geodesy

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2001

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z. 5/60

17-30

17

Application of real-time kinematic GPS method in critical conditions

Bogusz J., Kujawa L., Rogowski J., Szołucha M., Korcz M., Leszczyński W.

Reports on Geodesy

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2001

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z. 2/57

175-183

EN

This paper deals with different application of RTK-GPS methods for precise monitoring of the moving objects of different kind. The high accuracy of this method (which actually reaches a few centimetres) makes the possibility for much wider application as used until now. The authors performed the tests aimed at the investigation of the RTK measurements accuracy made in critical conditions (obstructions, multipath, etc.). This paper describes results of such tests, which were performed using manmanned models of VLLC in Warsaw and practice determination of the accuracy of the real-time kinematic GPS. It also presents the contemporary methods of the multipath elimination and the results of their practical application.

18

Analysis of integrated water vapourderived using GPS

Kruczyk M., Rogowski J., Liwosz T.

Reports on Geodesy

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2001

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z. 2/57

161-167

EN

Various numerical experiments concerning determination of IWV over permanent GPS stations in Central Europe are reported here. We analysed changes of the formula for mean temperature from radiosounding (conducted by Polish Institute of Meteorology and Water Management). Radiosonde and numerical weather model - derived IWV were compared to postprocessed solutions for GPS stations. Different: GPS solutions (both daily and hourly, applying different orbit products), hydrostatic and dry models, real and model assimilated meteo data were compared and analysed.

19

Activities of astro-geodetic observatory in Jozefoslaw in 2000

Bogusz J., Figurski M., Kruczyk M., Kujawa L., Kurka W., Litwosz T., Pfeil M., Rogowski J.

Reports on Geodesy

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2001

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z. 2/57

153-159

EN

Astro-geodetic Observatory of the Institute of Geodesy and Geodetic Astronomy of the Warsaw University of Technology in Józefosław was incorporated in 1957. In 1991 it was joined to the International GPS Service for Geodynamics (IGS) and started to operate as a permanent one in 1993. Since then the following permanent services have been maintained: GPS observations using Trimble and Turbo Rogue receivers, tidal gravimetric observations with LaCoste&Romberg model D gravimeter and meteorological obseryations. Since 1995 WUT Local Analysis Centre, one of the 13 local Analysis Centres acting in Europe, has started the systematic day-to-day processing of the selected number of European sites in the frame of the EUREF network. It processes national and International GPS campaigns (CEGRN, EXTENDED SAGET etc.), models ionosphere and troposphere parameters, compute tidal components and changes of the vertical according to astrometric and gravimetric measurements. For last 5 years the Centre has processed and analysed many of scientific researches carried out in within the confines of the Central European Initiatiye (CEI). This paper presents state of the art of the Observatory's actiyities. It deals with the acting of it and participating of the WUT Local Analysis Centre to the international scientific projects.

20

Towards short term geodynamics

Zanimonskiy Y., Kryński J.

Reports on Geodesy

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2000

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z. 8/54

47-54

EN

Geodynamics at present associates with comparatively slow movements of the Earth crust. The tidal phenomenon with its main part being regular and predictable is not considered as a subject of classical geodynamics. However, the non-modelled variations in observed gravity may be interpreted in terms of short-term geodynamics. Supposedly the mantle-crust interaction is one of the reasons of superfluous tidal variations. High resolution of geodetic data acquisition in both space and time domain make the results of geodetic measurements increasingly attractive for geophysicists. Practical research is carried out at the Borowa Gora geodetic-geodynamic observatory located in contact zone of lithospheric plates. The residuals obtained by subtracting a tidal model from a series of gravity data were processed using the short-term spectral analysis. The resulted superfluous tidal variations consisting of periodic terms of periods from 3 up to 24 hours at a level of a few microgals could be interpreted as an indicator of non-elastic movements of the Earth crust. On the other hand the short-term time variations of the relative position of two close to each other permanent GPS stations were investigated. The magnitudes of the obtained oscillations of 12 and 24-hour periods seem to exceed the estimated errors of GPS relative positioning using 4 hour long observing sessions. The correspondence between the oscillations in gravity and GPS derived height was obtained. An attempt of modelling these oscillations was undertaken. The blocks of the crust are considered to rise and fall, rocking on the tidal wave in the body of the Earth. The gravity signal on the surface, due to the tidal motion of the mantle, is modified by the motion and deformation of the crust. Model based on a weak hysteresis in crust-mantle interaction was investigated. Modelled superfluous variations obtained at a few sites show close similarity to the observed ones in time and in frequency domain. It was shown that the information ordinarily removed from the data by averaging over daily intervals could be useful not only for geodesists but also for a wide spectrum of Earth scientists.