Post on 17-Jan-2016
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Actual Status, Activities and Perspectives of the Space Geodesy Laboratory in Marine and Satellite
Positioning
Claudia Pereira Krueger (UFPR)
Satellite and Marine Geodesy Laboratory
Federal University of Paraná (UFPR)
February, 2011
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Federal University of Paraná - UFPR
Sources: www.maps-continents.com/globe-north-america.htm (2005)
www.cobveget.cnpm.embrapa.br/.../brasil.jpg (2005)
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UFPR:
- foundation 1912;
-Campus c.a 905 ha. With four campi in the city of Curitiba and other four
campi in seven other cities of the State of Paraná;
-has close cooperative relations with about 110 universities different countries;
-Undergraduate Students c.a 25,000;
-Graduate Students (Master and Doctoral) c.a 3,200;
-Post Graduation Specialization c.a 2,100
-Professors and Lecturers 2,197
-Supporting Staff 3,460
-Faculties/Sectors 12
-Departments 69
-Libraries 15
-School Hospitals 3
-University Restaurants 3
-Undergraduate Degrees 101
-Graduate Degrees 90Source:International Affairs Office (ARI)
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UFPR (Geoscience):
- Campus of Centro Politecnico;
-Undergraduate Students in Geoscience: ca 900 each semester;
-Graduate Students (Master and Doctoral) in Geoscience: ca 154 in 2010;
-Professors in Geoscience: 98
- Supporting Staff in Geoscience: 54
-Departments: 04 (Geomatic, Geology, Geography and Oceanography)
-Undergraduate Degrees in Geoscience: 04
-Graduate Degrees in Geoscience: 05Source: PROPLAN (2010)
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Departament of Geomatics:Undergraduate Students in Cartography Engineering
Postgraduation Program in Earth Science:
- Photogrammetry and Remote Sensing;
- Cartography and Geographic Information Systems;
- Geodesy:
-Optimization of Geodetic Surveys (SIRGAS project: integration of high-
precision geodetic networks in South America, altimetric Datum, Satellite
altimetry (DGFI/GIK))
-Positioning and Navigation Based on Space Techniques
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Spatial and Marine Geodetic Laboratory
Federal University of Paraná-UFPR
Campus of Centro Politécnico
LAGE
- Professors (UFPR): 04
- Professors (other institutions): 05
- Undergraduate Students in IC: 04
- Graduate Students (Master and
Doctoral): 10
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Our Research group at UFPR/Geoscience
• Positioning and Navigation Based on Space Techniques
This line of research is promising and attractive, andhas been increasingly developed theme of national andinternational interest. Its primary objectives are:development methodologies and techniques inpositioning and navigation, based on space technologyresearch, and human resources training.
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Research Areas
• Space Geodesy;
• Marine Geodesy and Hydrography; and
• Positioning and Navigation.
Subjects
• Positioning and Navigation Based on Space Techniques;
• Satellite Geodesy;
• Potencial of the Earth;
• Hydrography;
• Marine Geodesy.
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• The beginning occurred with the satellite tracking
station, in 1979, with the aim of developing
research on the Doppler positioning (Marconi
CMA 751 receiver).
• Several national and international cooperations,
such as: GTZ, KFA, DLR, IfE (UH), GIK (KIT),
DAAD, CAPES, CNPQ, FA, IBGE, Marine Navy,
RFFSA...
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View of Old Researches
• Study of GPS observations in area of large ionospheric
disturbances (1990)
• Control of the railroads of Paraná (IfE/UH and
RFFSA) (1994)
• Investigations on the application of high precision GPS
in marine environment (1996)
• Establishment of a local geodetic network along the
Brazilian coast (1996)
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• Development of local reference networks with the aim of applications in GPS high accuracy in real time (2001) (DLR/KFA/CNPQ).
• Extracting depths from images upon of high resolution based on reflectance values (2003).
• Assessment methodologies to update the coastlines inthe Brazilian ecossystem. Study of Case: CoastalMatinhos, PR (2006) (FA).
• Extracting depths from images upon of high resolution based on reflectance values (2003).
View of Old Researches
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• High Precision GPS positioning: investigation of some sources of errors and their modeling and deployment of the 1st. Calibration Base Antennas GNSS in Brazil (MCT / CNPq) and PROBRAL (CAPES/DAAD) (2006).
• Investigating parameters which influence GPS data process aiming at a volumetric model of sandy espur at Ilha do Mel (2006).
• Method to the oceanic bottom relief modelling using Artificial Neural Network (2006) (UH/UFPR/AWI).
View of Old Researches
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• Analysis of Horizontal Accuracy of Differential GPS
Positioning in employee Hydrographic surveys from
systems DGPS, RTK and RTG (2007).
• Application, investigation and an analysis of
bathymetric reduction methodology by diferencial
precise GPS method (2007).
• The application of GPS bathymetric tidal reduction in
hydrographic surveys (2008).
View of Old Researches
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Actual Status - Researches
1. The establishment of the Baseline Calibration
Station for GNSS Antennas at UFPR.
The first service in Brazil and Latin America.
The calibration basis was possible especially due to
technology transfer from Germany within the international
cooperation PROBRAL: Precise positioning and height
determination by means of GPS – Modelling of errors and
transformation into physical heights, which was funded by
CAPES (Brazil) and DAAD (Germany) (GIK/UFPR).
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1. The establishment of the Baseline Calibration
Station for GNSS Antennas at UFPR.
The phase center variations for L1 and L2 TRM22020.00+GP antenna
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Actual Status - Researches
2. Geodesic Surveys on Coast of Paraná.
Investigations and Application of High Precision GNSS in
Marine Environment.
Dynamics of the coastline located at the Paraná State:
positioning, mapping and monitoring.
Hydrographic surveys.
Determining the environmental impact of human actions on the
coastline of the Matinhos (PR)
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2. Geodesic Surveys on Coast of Paraná
The surface of the island covers an area of 27 km² and the length of the coastline is about 36.5 km.
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2. Geodesic Surveys on Coast of Paraná
Aerialview of Mel Island: Isthmus,Nova Brasília and Farol dasConchas
The temporal coastal changes, the isthmus and the “sandy spur” with geodetic survey at the island “Ilha do Mel” (since 1996).
In 1997
View of the Mel Island isthmus in 1997
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2. Geodesic Surveys on Coast of Paraná
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2. Geodesic Surveys on Coast of Paraná
Aerialview of Mel Island: Isthmus,Nova Brasília and Farol dasConchas
Ex: the temporal coastal changes
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2. Geodesic Surveys on Coast of Paraná
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Geodesic Surveys on Coast of Paraná
Matinhos Beach in 2001 – Occupation
Matinhos Beach in 1920
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2. Geodesic Surveys on Coast of Paraná
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2. Geodesic Surveys on Coast of Paraná
(a) represents the
temporal shoreline
extracted by
aerofotogrametry
(b) represents the
shoreline extracted
by relative cinematic
positioning using
GPS.
For each temporal
shoreline there is a
database associate
showing in the system
information about the
shoreline mapping.
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Actual Status - Researches3. Technology Innovation
Developed a material called Attenuator of Multipath Effect (AEM-
LAGE) that might be coupled to an antenna in order to decrease
the multipath effects and mitigate the indirect signals that reach the
positioning receiver.
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3. Technology Innovation
Attenuator of Multipath Effect (AEM-LAGE)
Multipath Effect L1
ca 10%
ca 30%
Multipath Effect L2
Without material x AEM-LAGE x C-RAM_LF
L1 (12% x 30%)
L2 (15% x 15%)
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Prototypes of monitoring devices for water levels and currents in
coastal and the barrages waters. The prototypes was tested in
Vossoroca reservoir. Can be verified that the prototypes were
efficient in collecting data and that these, post-processed,
represent, within the precision of the equipment used, the reality
of hydraulic dynamics of the test area.
The prototypes provide data shall go through the analysis of
velocity fields, which supplied research support for the LAGE to
determine fragility of coastal areas of environmental
preservation supported by specialists systems.
3. Technology Innovation
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3. Technology Innovation
Vossoroca reservoir
located about 60 km
from Curitiba, in the
Tijucas do Sul district
(BR-376).
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3. Technology Innovation
Prototype of monitoring devices for
water levels
12 cm
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3. Technology Innovation
Prototype of monitoring currents.
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3. Technology Innovation
Prototype of digital level.
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Actual Status - Researches
4. Approaching the total vertical uncertainty of the
reduced depth
the methodology developed is
able to detect and highlight and fix
the errors present in hydrographic
surveys conducted with multibeam
echo sounder.
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-surveys at 2009 and 2010 by
Brazilian Navy;
- regular lines x verify lines
4. Approaching the total vertical uncertainty of the
reduced depth
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Actual Status - Researches
5. Specialists Systems
The development of an expert system for determination levels
of fragility has been studied.
This research discusses the criteria for the expert basic of
knowledge system and also introduces a new mathematical
model for determining the fragility index. All elements related
to natural and human interventions that can be part off the
equilibrium or disequilibrium in an environment complex. This
research that climbs through the data from the Geodetic
Sciences together with other sciences can be generated
subsidies for the planning and management of the territory.
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Actual Status - Researches6. Shoreline prediction
Other researches aim to demonstrate a comparison andassessment between three different models of shorelineprediction: robust parameter estimation, artificial neural networkand linear regression. From this propose temporal data, relatedto the years 1954, 1963, 1980, 1991 and 1997, were used forshoreline extraction in a 6 km section of Matinhos beach in thestate of Paraná, Brazil.
Some hypotheses changing the weight matrix for the case oflinear regression and robust estimation were done. The beststatistics result shows the MAPE (Mean Absolute PercentageError) when compared with the residuals between the predictionand the shoreline of control. With these criteria an ideal modelfor the study area has been evaluated.
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Actual Status - Researches7. NTRIP - Networked Transport of RTCM via
Internet Protocol
•26 Stations from RBMCparticipate;
•Data transmission: internetconnection (celular/modem(GSM, GPRS ou 3G)
•Free service;
•Several users at the same time;
•Differential corrections from anytype of GNSS data;
•Since 2009.
Source:http://www.ibge.gov.br/home/geociencias/geodesia/rbmc/ntrip/mapa_localizacao.shtm
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The SIRGAS Real Time (SIRGAS-RT) project was established in the
SIRGAS 2008 General Meeting (May 2008). Its main objective is to
evaluate the possibility of providing near real time corrections for
GNSS positioning based on the SIRGAS-CON stations. After one
year, Brazil, Uruguay, and Venezuela, who are applying the NTRIP
tool.
7. NTRIP - Networked Transport of RTCM via
Internet Protocol
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SIRGAS (2000)
• SIRGAS (2000) is the new
Geodetic System of Brazil since
25/02/2005
Realization 2000:- 184 stations in America;- Campane from 10 until 19 May of
2000, coordinates in ITRF2000,ephoca 2000,4;
- Processing data in IBGE and DGFI.
Source:www.ibge.gov.br
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7. NTRIP - Networked Transport of RTCM via
Internet Protocol
Service Components RBMC-IP
Service Componentes RBMC-IP
Source:http://www.ibge.gov.br/home/geociencias/geodesia/rbmc/ntrip/mapa_localizacao.shtm
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•Accuracy: comparison between the coordinates obtained by RTK and
DGPS coordinates of the station;
•The lenght of the baseline it is very important.
7. NTRIP - Networked Transport of RTCM via
Internet Protocol
A very short baseline <1km
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Perspectives
Calibration GNSS antennas:
• Develop standards to Brazil and Latin America;
• Calibration GNSS antennas in Brazil and Latin America
high precise positioning
GNSS Networks
• More investigations about the influence of temperatures and
atmospheric pressure in the BCAL.
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Perspectives
Coastal Areas:
• to be continuous to positioning, mapping and monitoring;
• more integration with other groups in national and internationallevel;
• new models for coastal areas with different variables (like:atmospheric temperature, winds, tides, atmospheric pressure,wave energy and variation in the mean sea level);
• database in Paraná or better Organized a GIS to our coastalareas;
• interdisciplinary researches.
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Perspectives
Reservoirs waters:
• new systems to monitoring the reservoirs, such as: develop asystem for monitoring water bodies of low cost and develop alow cost photogrammetric platform in order to determine thecoordinates of the drifting buoys and floats;
• more integration with other groups in national and internationallevel;
• interdisciplinary researches: are reservoirs waters contributingwith the “greenhouse effect”?
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Perspectives
Serra do Mar:
• It is a very nice place to make a research special after it washappened in Petrópolis, Teresópolis
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Thanks for your attention!Vielen Danke!
Obrigada!
Claudia Pereira Krueger (UFPR)
ckrueger@ufpr.br