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1
Content available remote System pozycjonowania DGPS i RTK dla nowo wybudowanego terminalu gazowego LNG w Świnoujściu
Śniegocki H.
Prace Naukowe Politechniki Śląskiej. Elektryka
|
2011
|
z. 3
71--81
PL
W artykule zawarto krótki opis systemu GPS (Global Positioning System) w odmianie różnicowej, aktualnie funkcjonujący na terenie Zatoki Pomorskiej. Podano także przykład modernizacji i rozbudowy systemu na omawianym akwenie na potrzeby największych gazowców LNG, mających wkrótce zawijać do Terminalu Gazowego LNG w Świnoujściu.
EN
Short description of GPS (Global Positioning System) and its differential mode is presented in this article. Proposal of modernization and some changes to the system construction itself are also included in this paper in accordance to LNG gas tankers needs and requirements which will enter Świnoujście LNG Terminal in nearest future.
2
Reliability theorem application for accuracy statistics determination of differential global positioning system
Specht C.
Logistyka
|
2010
|
nr 2
EN
The accuracy estimation method of determining the position coordinates of temporary navigation systems is well known both in navigation and geodesy as well. The estimation of errors measurements statistics being the random variables enables evaluation some probabilities which are measures of accuracy of the position systems. There are presented the suggestion of three new measures of accuracy of determining the coordinates related to reliability characteristics in that article. In contrast to the common applied approach in which the single measurement error is a random variable, in the presented here approach the distributions of working times and times of failures were taken under statistics estimation. The model of availability was detailed presented. Is enabled to define some new statistics measures related to the navigational solution. Proposed method were applied to DGPS system position statistics, where two campaign (2005, 2009) were compared.
PL
Metoda określenia dokładności wyznaczenia pozycji współczesnych systemów nawigacyjnych jest dziś powszechnie znana zarówno w nawigacji jak i geodezji. Określenie statystyk błędów pomiarów - będących zmiennymi losowymi - umożliwia wyznaczanie parametrów statystycznych, które określają dokładność system. W artykule zaproponowano trzy nowe charakterystyki dokładnościowe odniesione do charakterystyk niezawodnościowych. W przeciwieństwie do aktualnego podejścia proponowany model odnosi zmienne losowe do czasów pracy i awarii systemu. Model dostępności został zaprezentowany w sposób szczegółowy. Proponowane podejście umożliwia zdefiniowanie nowych statystyk odniesionych do procesu nawigacji. Opracowana metoda została zastosowana do rozwiązań pozycyjnych systemu DGPS, gdzie porównano dwie kampanie pomiarowe z lat: 2005 i 2009.
3
Content available remote DGPS with the use of two reference stations
Bakuła M.
Reports on Geodesy
|
2003
|
z. 1/64
257-263
EN
The paper presents Differential Global Positioning System (DGPS) post processing positioning with the use of two reference stations at the same time. The traditional DGPS is based on one reference/base station. The paper shows that when we use, simultaneously, two reference stations we can analyze distribution of pseudorange corrections over time and model them. Two reference stations used in DGPS positioning give redundant observations thanks to which we can estimate more realistic accuracy of positioning. The paper shows that the use of two reference stations improves DGPS accuracy.
4
Content available remote Determination of accuracy and coverage of permanent reference station (DGPS/RTK)
Ciecko A., Oszczak S., Oszczak B.
Reports on Geodesy
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2003
|
z. 2/65
45-51
EN
The paper describes the experiment performed in Gdynia in January - February 2003. Permanent reference station in Gdynia equipped with Ashtech Z-FX receiver and Satel 3 AS-Epic radiomodem was used. The corrections were transmitted in the RTCM format. In the project over 30 control points were chosen for testing of accuracy and coverage of DGPS/RTK corrections. The measurement sessions lasted about one hour for each of the control points. The internal memory card of the receiver stored raw observation data (B,E,S-files) as well as C-file with RTK positions (1 second interval). The comparisons between static and real time GPS positioning results as well as catalogue coordinates of control points derived with classical techniques were done. The obtained results were discussed and conclusions for real time satellite positioning using Gdynia DGPS/RTK permanent rererence station are presented.
5
Content available remote A mathematical model of DGPS corrections
Bakuła M.
Reports on Geodesy
|
2003
|
z. 2/65
85-88
EN
The paper presents a mathematical model of DGPS correction and their weights in post processing positioning when we use two reference stations at the same time. The traditional DGPS is based on one reference/base station. It has been shown that the accuracy of thet positioning is about 1-2 meters in dependence of a number of satellites and value of PDOP (Position Dilution of Precision). The paper shows that when we use, simultaneously, two reference stations we can analyze distribution of pseudorange corrections over time and model them. Two refernce stations used in DGPS positioning give redunndant observations and allow to estimate more realistic accuracy of positioning.
6
Content available remote The optimization method of the location of the autonomous element of the aids to navigation
Czaplewski K.
Reports on Geodesy
|
2002
|
z. 1/61
217-225
EN
One of the most important components, which should be taken into account while design process of stablishing the aids to navigation, is the estimation of the optimal position of the position-fixing marks. There are various methods of estimation of the optimal coordinates in dependence of optimisation criteria i.e.: -minimalizing a position error -maximizing a navigational-system-operation zone The quite new problem is the optimization of the location of aids to navigation in dependence of its availability for ships being in the given sea area. This paper proposes the optimization method of location of autonomous element of the aids to navigation in dependence of the aid`s availability for ships being in the given seaarea. This method can be used while stimation of the optimal position of a DGPS reference station. The author has tested this method using the simulated DGPS refernce - station on the middle Poland`s sea coast.
7
Content available remote DGPS via internet and remote real-time updating of databases and WEB-GIS
Lanzi R., Cantoni R., Gelmini M., Vassena G., Stefini G.
Reports on Geodesy
|
2002
|
z. 3/63
69-73
8
Content available remote Air-net pf Polish permanent stations RTK DGPS in programme EUR RVSM
Czarnecki K., Fellner A., Jafernik H., Markiewicz M., Śledziński J.
Reports on Geodesy
|
2002
|
z. 1/61
243-252
EN
All aircraft intending to operate in the EUR RSVM Aispace, expect State aircraft, shall require an Reduced Vertical Separation Minimum approval issued by the responsible authority. To obtain such an approval, aircraft operators will have to satisfy the requirements set out in Joint Aviation Authorities (JAA) Temporary Guidance Leaflet No 6 (TGL6), which require: *that aircraft for which RVSM Approval is sought have the vertical navigation performance capability required for RVSM operations through compliance with the criteria of the RVSM Minimum Aircraft System Performance Specification (MASPS) *that, they have instituted procedures for continued airworthiness (maintenanceand repair) practices *that they have instituted flight crew procedures for operations in the EUR RVSM Airspace A comrehensive means of monitoring the height - keeping performance of aircraft has been developed utilising two types of equipment: *Height Monitoring Units - static height monitoring facilities *GPS Monitoring Units - portable monitoring ubits on board aircraft The paper present select problems connected of Polish Air-System RTK DGPS in EUR RVSM Programme. Reached results became during air - tests in years 1995-2001.
9
Content available remote Programme of geodynamic and environmental studies in the region of Plitvice Lakes
Medak D., Pribicević B.
Reports on Geodesy
|
2001
|
z. 2/57
219-224
10
Content available remote An examination of the DGPS system capabilities in Zalew Szczeciński
Dolgopolov A., Kozłowski Z.
Reports on Geodesy
|
2001
|
z. 2/57
185-188
11
Content available remote Research activity on DGPS in cooperation between Austria, Czech Republic, Italy and Poland
Manzoni G., Oszczak S.
Reports on Geodesy
|
2000
|
z. 9/55
29-31
EN
The 2nd International Workshop on Satellite Navigation in CEI Area, Olsztyn, 3-5 July, 2000, follows the first one, hold in Trieste in March 1999. Thanks to a large participation, the overview of the DGPS activity in the CEI area has suggested some immediate international experimental activity with the purpose to design the best radio transmission facility for the real time accurate positioning. Till now the activity has joined researchers from Austria, Czech Republic, Italy, Poland. The paper refers the principal steps and results of the activity and some perspective for the future. Details on the various experiments have been given by Doeller and others in the Italy-Poland Geodetic Meeting, Cracow, July 29-30, 2000.
12
Content available remote Increase in ship safety during port manoeuvres by the DGPS system
Dolgopolov A., Kozłowski M., Turczyn T., Wolski A.
Reports on Geodesy
|
2000
|
z. 6/52
191-195
13
Content available remote DGPS with Navi GSM
Cisak J., Kryński J., Sekowski M.
Reports on Geodesy
|
2000
|
z. 9/55
33-41
EN
The GPS system may be applied in numerous branches of state economy, service sector, navigation as well as in surveying projects as an inexpensive and highly reliable system providing near real time positioning at 1m level of accuracy. DGPS corrections generated by the permanent base station could fulfill the needs of the system users all over a medium size European country wherever the GSM signal is available. The tests conducted at the Institute of Geodesy and Cartography with DGPS with Navi GSM show the wide spectrum of usefulness of the system.
14
Content available remote The process of automatic aproach landing using GPS navstar and glonass setellite systems
Fellner A., Grzegorzewski M.
Reports on Geodesy
|
1999
|
z. 3/44
217-217
15
Content available remote Low frequency DGPS correction dissemination system and EGNOS
Vejrazka F.
Reports on Geodesy
|
1999
|
z. 3/44
297-300
16
Content available remote Introduction to airborne laser scanning, a GPS-INS based technique
Casella V.
Reports on Geodesy
|
1999
|
z. 3/44
249-254
EN
An overview is given of laser scanning, a young promissing technique for effective and fast DTM and DSM production. The paper highlights the basic functioning principles and the main products of laser scanning; moreover its relationhips with photogrammetry are taken into account.
17
Content available remote GPS vehicle tracking and GIS data collection for fire prevention in forest areas
Radicioni F., Stoppini A., Grohmann F., Tittarelli L.
Reports on Geodesy
|
1999
|
z. 3/44
219-225
18
Content available remote DGPS experiences during CEI workshop on "Education in GPS for LIS/GIS" - Grybów, Poland, 1998
Czarnecki K., Vodopivec F., Walo J.
Reports on Geodesy
|
1999
|
z. 3/44
245-247
19
Content available remote Concept RTK DGPS within the framework of Polish radionavigation plan
Fellner A.
Reports on Geodesy
|
1999
|
z. 4/45
153-157
EN
The paper presents the satellite navigation concepts for immediate implementation. The Polish Radionavigation Plan is a review of existing radionavigation systems used in air, land marine navigation are planned RTK DGPS reference, permanent stations. RTK DGPS has been recently started in Poland. The system is designed for both military and civil users. It is to fulfil demands of the Polish aviation for precise navigation in every conditionses of weather. The system is envisaged to be applied also to land navigation for public services. RTK DGPS will be be origin Polish Precise Active Positioning System. 11. PROBLEMS:
20
Content available remote Analysis and validation of different DGPS techniques
Dominici D., Pecetti M., Radicioni F., Stoppini A.
Reports on Geodesy
|
1999
|
z. 3/44
227-233
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