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International cooperation and technology transfer

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fullscreen: International cooperation and technology transfer

Monograph

Persistent identifier:: 856489328

Author:: Mussio, Luigi

Title:: International cooperation and technology transfer

Sub title:: Parma, Italy, February 15 - 19, 1999, Bandung, Indonesia, April 13 - 14, 1999, Cotonou, Benin, December 6 - 10, 1999 ; proceedings of the workshops

Scope:: XXX, 398 Seiten

Year of publication:: 1999

Place of publication:: London

Publisher of the original:: RICS Books

Identifier (digital):: 856489328

Illustration:: Illustrationen, Diagramme

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: FIELD TESTS ON DGPS USING OMNISTAR CORRECTION. D. Dominici, M. L. Pecetti, F. Radicioni, A. Stoppini.

Document type:: Monograph

Structure type:: Chapter

International cooperation and technology transfer
Cover
ColorChart
Title page
FOREWORD.
Table of Contents.
Compte-rendu of the WG VI/3. Mariano Cunietti Memorial Meeting in Parma. Mojca Kosmatin Fras, WG VI/3 Co - chairperson.
Compte - Rendu of the ISPRS WG VI/3. High Level Tutorial in Bandung. Fahmi Amhar, Tutorial Chairperson.
Compte-rendu of the Wg VI/3. Luigi Solaini 10th Anniversary. Memorial Meeting in Cotonou. Luigi Mussio, WG VI/3 Chairperson.
Opening.
Closure.
Welcome addresses.
Opening.
Closure.
PADUA, BAHIA BLANCA, PERUGIA, PARMA, BANDUNG AND COTONOU, MEETING - LIST OF PARTICIPANTS.
ISPRS WG VI/3 - LIST OF CORRESPONDENTS.
VIRTUAL REALITY (VR) APPLIED TO ENVIRONMENT REPRESENTATIONS: SOME EXAMPLES AT UNIVERSITY OF PADUA (ITALY). V. Achilli, F. Barison, A. Vettore.
SURVEYING METHODOLOGIES IN THE PHLEGREAN VOLCANIC DISTRICT (NAPLES - ITALY). Achilli V., Borgstrom S., Capone M., Del Gaudio C., De Martino P., Klees R., Ricciardi G. P., Ricco C., Sepe V., Usai S., Vettore A.
Integration of GPS and Conventional Surveying For Positioning of The Mobile Phone Antennae in A Local System. Al-Bayari O., Barbarella M., Fazio C..
The Spacewise Approach to the Data Treatment for the SAGE Mission Project. A. Albertella, F. Migliaccio, F. Sansó.
DATA AND METADATA A NEW CONCEPT IN ARCHIVING ARCHITECTURAL DATA. Elena ALBERY, Fulvio RINAUDO.
NOTES ABOUT TOPOGRAPHIC AND PHOTOGRAMMETRIC SURVEYING FOR THE INVESTIGATION OF THE DOME BEARING VERTICAL WALLS IN S. MARIA DEL FIORE CATHEDRAL OF FLORENCE. P. Aminti, I. Chiaverini, D. Ostuni.
NEW SURVEY OF MORIMONDO ABBEY. Bruno Astori, Luca Rinaldi, Grazia Tucci.
SARNO (ITALY) LANDSLIDES: DIFFERENT METHODOLOGIES OF DATA ACQUISITION. M. Barbarella, M. Fiani.
DIGITAL PHOTOGRAMMETRY AND LASER RANGE CAMERA FOR PHYSIC MODEL GEOMETRY DETERMINATION. M. Barbarella, A. Vettore.
SAMPLING AND VARIANCE ANALYSIS IN REGGIO CALABRIA. Vincenzo Barrile and Rossella Nocera.
GEOID ESTIMATION THROUGH GPS OBSERVATIONS. R. Barzaghi, A. Borghi.
DATA PROCESSING VERSUS GEOMATICS. T. Bellone, L. Mussio, C. Nardinocchi.
PERTINENCE DE L'OFFRE DE FORMATION DU GDTA A' L'INTERNATIONAL. Jean-Luc BESSIS.
THE ARCHITECTURAL AND ARCHAEOLOGICAL PHOTOGRAMMETRICAL EXPERIENCES IN GREECE AND MIDDLE ASIA. Giorgio Bezoari.
PROCEDURES OPTIMISATION IN THE QUALITY SYSTEM. G. Bezoari, F. Guzzetti.
CARTOGRAPHY FOR TOWN PLANNING. Giorgio Bezoari, Attilio Selvini.
INDEXING TREE METHODS AND SPATIAL ORDERING FOR MAPS AND GEOGRAPHIC DATA: AN OVERVIEW AND APPLICATION TO THE GEODETIC GIS PROJECT. L. Biagi, M. A. Brovelli, M. Negretti and C. Saldarini.
GIS/WEB DESIGN FOR INTERNET/INTRANET DATA SHARING. Piero BOCCARDO, Giuliano COMOGLIO, Nadia CORGIAT LOIA.
SURFACE SPATIAL ANALYSIS IN ARCHITECTURAL AND ARCHAEOLOGICAL SURVEY: DIGITAL AND ANALYTICAL PROCEDURES. Raffaella BOLOGNA, Maurizio MINCHILLI.
VERY LARGE SCALE MAPPING OF THE ARCHAEOLOGICAL SITE IN CERVETERI (ITALY): DATA COLLECTION FROM DIGITAL AUTOMATIC D.T.M., ORTHOPROJECTION AND ANALYTICAL STEREOPLOTTING. Raffaella BOLOGNA, Maurizio MINCHILLI.
DES COMPOSANTS LOGICIELS GEOGRAPHIQUES POUR ELARGIR ET DEMOCRATISER L'ACCES A LA TECHNOLOGIE ETA L’INFORMATION GEOGRAPHIQUE. SPATIAL SOFTWARE COMPONENTS FOR WIDENING AND DEMOCRATIZING ACCESS TO GEOGRAPHIC INFORMATION AND TECHNOLOGY. Patrice BOURSIER, Michel EBOUEYA, Arunas STOCKUS, Alain BOUJU, Frédéric BERTRAND.
VALIDATION OF AN ANCIENT PERSPECTIVE IN LECCO (ITALY). PIETRO BROGLIA, EVA SAVINA MALINVERNI, LUIGI MUSSIO.
THE USE OF SPATIAL-ORIENTED DATA BASE MANAGEMENT SYSTEMS (DBMS) FOR ITALGEO GEOID MANAGEMENT BY GIS. M. A. Brovelli, F. Migliaccio and V. Tornatore.
COMPARISON BETWEEN PHOTOGRAMMETRICAL SURVEYS OF THE ST.STEFANO CHURCH'S CLOISTER IN BOLOGNA AND METRICS EVALUATIONS OF THE OPERATIONS OF RESTORATION. A. Capra, S. Gandolfi, G. Lombardi, A. Zanutta.
EXPERIMENTAL TESTS IN DIGITAL IMAGES PLOTTING. M. Caprioli, P. De Fazio.
GVM - GAC PROCESSING CHAIN : A REMOTE SENSING TOOL FOR ENVIRONMENTAL APPLICATIONS AT CONTINENTAL LEVEL. C. Carmona-Moreno, M. Turchini, M. F. Cruz Martinez, J. Baron, J. Lopez Raya José, A. Moreno Ruiz.
INTERNATIONAL COOPERATION AND TECHNOLOGY TRANSFER GAIA: global astrometry from space at 10 [...] level. D. Cardio, B. Bucciarelli, M. Gai, M. G. Lattanzi and S. Cesare.
ESTABLISHMENT OF A LEVELLING NETWORK FOR THE MONITORING OF POSSIBLE VERTICAL MOVEMENTS IN THE AREA OF PISA - SAN GIULIANO TERME PONTASSERCHIO-MIGLIARINO PISANO (ITALY). G. Caroti, E. Mengali, A. Rossi, C. Scalese.
ESTIMATING MEASUREMENT PRECISION BY MEANS OF MEASUREMENT DIFFERENCES. V. Casella.
AUTOMATIC FOREST AREA RECOGNITION USING GIS IMAGE ANALYSIS CAPABILITY. Marco Ciolli, Paolo Zatelli.
NEW APPROACH TO THE ESTIMATION OF SNOWPACK ESTENSION VIA REMOTE SENSING. Alessandra Colombo, Giovanmaria Leoni.
CULTURAL HERITAGE WEB SITES: THE SUPPORT OF GEOMATICS. Luigi Colombo.
A METHOD FOR ESTIMATING 3D SHAPES MOTION BY A FREQUENCY DOMAIN TECHNIQUE. G. M. Cortelazzo, A. Guamieri, A. Vettore.
LA FORMATION AU C.R.T.O. A. Coulibaly.
A COMPUTER PROGRAM FOR THE VARIANCE-COVARIANCE ESTIMATION OF GPS BASELINE VECTORS. N. Crocetto, M. Gatti, C. Materazzo, L. Toscano.
INTERFEROMETRIC SAR CALIBRATION. M. Crosetto, B. Crippa.
OPTIMISATION DES DATES D'ACQUISITION DES IMAGES TELEDECTION EN ZONE SOUDANO-GUINEENNE POUR UN SUIVI DES ECOSYSTEMES. Cheick Hamala DIAKITE.
FIELD TESTS ON DGPS USING OMNISTAR CORRECTION. D. Dominici, M. L. Pecetti, F. Radicioni, A. Stoppini.
CONTROL DIRECTIONS FOR THE CALIBRATION OF TERRESTRIAL NON-METRIC CAMERAS. Gabriele Fangi.
EXPERIENCES OF VIRTUAL REALITY. G. Fangi, G. Gagliardini.
THE GRID METHOD, A SIMPLE PROCEDURE FOR THE DETERMINATION OF THE LENSE RADIAL DISTORTION. G. Fangi, Carla Nardinocchi.
DEM'S COMPARISON FOR THE EVALUATION OF LANDSLIDE VOLUME. M. Fiani, S. Troisi.
AUTOMATIC DEM GENERATION IN QUARRIES. Gianfranco FORLANI, Livio PINTO.
STATIC CONTROL OF PALAZZO DELLA RAGIONE IN PADUA. Alberto Giussani, Giorgio Vassena.
Conditions préalables au fonctionnement efficace et durable d'un SIG à base de télédétection. Claus-Peter Gross.
PROCEDURES OF CORRECTION OF THE GEOMETRY DISTORSIONS FOR DIGITAL IMAGES. A. Guarnieri, A. Vettore.
GEOPLANTRANSF: A SOFTWARE FOR THE GEOREFERENCING OF DIGITAL IMAGES BY USING PLANE TRASFORMATIONS. Francesco Guerra, Caterina Balletti, Davide Miniutti.
LA DECADENCE EN PRODUCTION CARTOGRAPHIQUE EN AFRIQUE: CAUSES ET THERAPIES DE REDEMARRAGE. A. L. Gueye, B. F. Agbo, P. M. Kibora.
GEOMATICS EDUCATION IN NIGERIA: THE CURRENT DRIVES. A. L. Gueye, O. Aguda.
DE LA TOPOGRAPHIE CONVENTIONNELLE VERS LA GEOMATIQUE: UNE EVOLUTION TECHNOLOGIQUE DE L'ENSEIGNEMENT TECHNIQUE DANS LE SYSTEME EDUCATIF CAMEROUNAIS. HAPPI MANGOUA FREDERIC.
INTERNET-ATLAS OF NATURAL AND AGRONOMIC RESOURCES IN NIGER AND BENIN - A TOOL FOR PRESENTATION AND EXCHANGE OF SPATIAL DATA - . L. Herrmann, K. Vennemann, K. Stahr.
Mapping from Space. Gottfried Konecny.
CONTEMPORARY METRICAL DOCUMENTATION OF CULTURAL HERITAGE ARCHITECTURE. Mojca Kosmatin Fras.
Acquisition of Topographic Data by Laser Scanning and Digital Photogrammetry. Karl Kraus.
The GeoMed Project: GIS and Spatial/Temporal Statistics in Public Health. Andy Long, Mark Wilson, Geoff Jacquez, Leah Estberg.
GPS and GLONASS in Italy. Giorgio Manzoni.
GEOMATICS EDUCATION AND TRAINING IN BOTSWANA. L. Maphale, M. B. Manisa, B. Nkwae, C. Ezigbalike.
THE TWOFOLD NATURE OF MEASUREMENT AS EMPIRICAL AND LINGUISTIC OPERATION. Luca Mari.
UNCERTAINTY IN MEASUREMENT: A SURVEY. Luca Mari.
A RECTIFICATION OF DIGITAL IMAGES OBTAINED FROM AN ANALOGICAL VIDEORECORDING. Patrizia Midulla.
GENE FUCTIONAL MAPPING. Luciano Milanesi, Raffaella Rizzi.
THE APPLICATION OF GEOGRAPHIC INFORMATION SYSTEMS IN ENVIRONMENTAL IMPACT ASSESSMENT IN AFRICA: CHALLENGES AND OPPORTUNITIES. MLENGE FANUEL MGENDI.
GIS: TEACHING EXPERIENCE IN THE COURSE AT DIIAR POLITECNICO OF MILAN. Carlo MONTI, Raffaella BRUMANA, Luigi FREGONESE.
GIS TECHNOLOGY TO SUPPORT SURVEY DATA AND MANAGEMENT OF DIFFERENT QUARRY TYPOLOGIES. Carlo MONTI, Raffaella BRUMANA, Luigi FREGONESE, Giorgio Vassena.
LA FORMATION ET LA RECHERCHE AU CENTRE NATIONAL DES TECHNIQUES SPATIALES. A. OUSSEDIK, M. A. TRACHE.
GEOID BEHAVIOUR IN THE BAHIA BLANCA AREA. Raúl Perdomo y Daniel Del Cogliano, Nilda Di Croché, Esteban Napal, Beatriz Aldalur, Ana María De Aduriz, Pablo Napal, Nora Plana, Irene Pintos, Miguel Angel Martínez, Santiago Rosso.
GEOID MODELLING IN THE SOUTHERN REGION OF THE BUENOS AIRES PROVINCE. Raúl Perdomo, Daniel Del Cogliano, Nilda Di Croche, Esteban Napal, Beatriz Aldalur, Pablo Napal, Irene Pintos.
SATELLITAL IMAGING, INFORMATION SUPPORT OF A PROVINCIAL CARTOGRAPHIC PROJECT. E. QÜESTA, R. YANICELLI, V. FARES, L. LUNA, E. GOLDAR, D. SANDEZ, C. ISORNI, W. COSTA, E. TONELLI.
FORMATION ET PROJETS EN GEOMATIQUE MIS EN PLACE PAR L'ASSOCIATION POUR LE DEVELOPPEMENT DE L'INFORMATION ENVIRONNEMENTALE (ADIE) EN AFRIQUE CENTRALE. Ralph Ridder, Brice Montfraix, Stéphane Lombardo.
CONSTRUCTION OF BASIC DIGITAL MAP FOR CITY GIS BY STEREOPHOTOGRAMMETRIC APPROACH. B. Ruzgiene.
SAGE: AN ITALIAN PROJECT OF SATELLITE ACCELEROMETRY. F. Sanso, A. Albertella, G. Bianco, A. Della Torre, M. Fermi, V. lafolla, A. Lenti, F. Migliaccio, A. Milani, A. Rossi.
THE TEACHING OF REMOTE SENSING IN SOUTH AMERICA. Tania Maria Sausen.
CROP GROWTH MODELLING IN MALI BASED ON ERS SCATTEROMETER INFORMATION. Pierre C. Sibiry Traoré, Mamadou D. Doumbia, Salifou Sissoko, Abderamane Yoroté, Wolfgang Wagner, Klaus Scipal, Anne Gobin, Paul Campling, Erik Nobbe, Rob Beck.
TER LOW COST SMALL SATELLITES FOR EARTH OBSERVATION AND TECHNOLOGY TRANSFER TO DEVELOPING COUNTRIES. Martin Sweeting, Wei Sun.
MAPPING OF HYDROTHERMAL ALTERATION BY REMOTE SENSING AT THE ACOCULCO CALDERA, PUEBLA, MEXICO. VICENTE TORRES RODRÍGUEZ & GABRIEL ORIGEL GUTIÉRREZ.
ISSUES AND APPROACHES IN MAPPING THE IMPACTS OF MINING ON THE ENVIRONMENT IN AFRICA (WITH TEST CASE FROM KITWE MINE, ZAMBIA). Tsehaie Woldai, Daniel Limptlaw.
POTENTIAL FOR COMPUTER ASSISTED DISTANCE LEARNING IN ZAMBIA: WHAT ARE THE CONSTRAINTS AND THE WAY FORWARD. Paul Zambezi.
Appendix: Authors and Co-authors Index.
Cover

Full text

2. THE OMNISTAR™ SYSTEM 
2.1. General characteristics and design objectives of 
the system 
The OMNISTAR™ DGPS system is a commercial service 
which has been designed with the following objectives: 
(a) continental coverage; 
(b) sub-meter accuracy over the entire coverage area; 
(c) light and portable equipment; 
(d) ease of use. 
The first objective, for the reasons exposed in the 
introduction, has been reached adopting a geostationary 
satellite for the correction data transmission. The company 
initially purchased a transponder onboard a satellite 
covering all northern America. Later, a coverage over 
Europe and other continents was realised by means of 
further satellites. Figures 1 and 2 show respectively the 
coverage "footprints" over North America and Europe. 
An appropriate computation methodology, taking 
advantage from multiple GPS base stations and correctly 
modelling the biases due to the atmospheric delay of the 
GPS signal, has been implemented in the OMNISTAR 
software in order to meet the second objective. 
The equipment units are sufficiently portable to be carried 
in a rather small backpack. There are essentially two types 
of equipment, to be better described later: an add-on kit 
working together with an external GPS receiver, and an 
all-in-one equipment. 
Once effected the preliminary system set-up and 
connections, the users can take the equipment anywhere 
within the coverage area and get consistent results in real 
time, without any intervention or intimate knowledge of 
GPS or DGPS. The great ease of use permits the 
adoption of the system by generic technical users, not 
having a specific formation in survey sciences and 
techniques. 
Fig.1 - OMNISTAR™ coverage over North America 
Fig.2 - OMNISTAR™ coverage over Europe 
(and North Africa) 
2.2. System organisation and computation technique 
The OMNI STAR Network consists of some widely-spaced 
permanent base stations for each continental area (see 
fig. 1 and 2). Each station tracks all visible GPS Satellites 
above 5 degrees elevation; pseudorange corrections 
every 600 milliseconds are computed. The corrections are 
in the form of an industry standard message format called 
RTCM-104, Version II. 
The corrections are sent to the OMNISTAR continental 
Network Control Centre (NCC) via lease lines, with a dial 
back-up. At the NCC all messages are checked, 
compressed, and formed into data packets for 
transmission up to the satellite transponder. This occurs 
approximately every 2 to 3 seconds. A data packet will 
contain the latest data from each of the continental base 
stations. 
All user sets receive these packets of data from the 
satellite transponder. The messages are first decoded 
from the spread-spectrum transmission format and then 
uncompressed. At that point, the message is an exact 
duplicate of the data as it was generated at each base 
station. 
The atmospheric errors correction is one of the crucial 
phase of the OMNISTAR DGPS solution. Every base 
station automatically corrects for atmospheric errors at it’s 
location. Using the approximate rover position given by the 
GPS, the user set software computes a correction for his 
own location. This operation, totally automatic, is essential 
for getting a sub-meter positioning from DGPS with such a 
widely spaced fixed stations network. If the atmospheric 
biases are totally ignored, errors of up to ten meters can 
result. 
After the software has taken care of the atmospheric 
corrections, it then uses it’s location versus the base 
station locations, in an inverse distance-weighted least- 
squares solution. 
This computation methodology, together with the 
atmospheric biases processing, has been called by the 
Company "Virtual Base Station" technique, because from

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