New GNSS receivers expand the range of applications in the GIS data acquisition Neue GNSS-Empfänger erweitern das Einsatzspektrum bei der GIS-Datenerfassung

GIS Business ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 36-37
Author(s):  
Schmitt, T
Keyword(s):  
Data Acquisition ◽  
Gis Data ◽  
Gnss Receivers

New GNSS receivers expand the range of applications in the GIS data acquisition Neue GNSS-Empfänger erweitern das Einsatzspektrum bei der GIS-Datenerfassung

scholarly journals Determination of orthometric elevations using gnss-derived height with the egm2008 geoid height model

2017 ◽  
Vol 5 (1) ◽  
pp. 13
Author(s):  
Emmanuel Menegbo
Keyword(s):  
Geoid Height ◽  
Global Navigation Satellite Systems ◽  
Satellite Systems ◽  
Maximum Elevation ◽  
Gis Data ◽  
Gnss Receivers ◽  
Orthometric Heights ◽  
Global Navigation Satellite ◽  
The Relationship

The Global navigation satellite systems (GNSS) has imparted positively on civilian positioning & surveying in the horizontal component in Nigeria for the past two decades. The GNSS receivers’ data are longitude, latitude & elevation. However, the vertical distance measurement have not been fully exploited by geodetic and land surveyors. The GNSS derived heights are ellipsoidal elevation. To convert the GNSS elevation to orthometric heights, a geoidal elevation models is needed. The Earth Gravitational Model, 2008 (EGM2008) is a global geoidal models that can be used to obtain GNSS orthometric heights by defining the relationship with the ellipsoid. This work determines GNSS-derived orthometric heights with ellipsoid-geoidal relationship using GPS ellipsoidal heights and EGM2008 geoidal model GIS data. The EGM2008 GIS data was downloaded and interpolated with GPS data to obtain geoidal heights using ArcGIS 10.1. GNSS-derived heights determined with geoid-ellipsoid relationship formula. The result shows minimum elevation of -2.37599m and maximum elevation of 53.8566m.The derived orthometric heights use to create a model in raster format. The orthometric elevation models created useful in all vertical surveying work, construction work and urban planning. The GNSS orthometric heights models need to be compare with spirit levelling and the local geoidal model determined for improve accuracy.

Kinematic surveying system for automatic GIS-data acquisition

1995 ◽  
Author(s):  
Christian Hock ◽  
W. Caspary ◽  
H. Heister ◽  
J. Klemm ◽  
H. Sternberg
Keyword(s):  
Data Acquisition ◽  
Gis Data

Image Analysis for GIS Data Acquisition

2000 ◽  
Vol 16 (96) ◽  
pp. 963-985 ◽  
Author(s):  
H. Heipke ◽  
K. Pakzad ◽  
B. M. Straub
Keyword(s):  
Image Analysis ◽  
Data Acquisition ◽  
Gis Data

scholarly journals Spatial Data Performance Test of Mid-cost UAS with Direct Georeferencing

2020 ◽  
Author(s):  
Branko Kordić ◽  
Mateo Gašparović ◽  
Borna Lužar Oberiter ◽  
Almin Đapo ◽  
Goran Vlastelica
Keyword(s):  
Data Acquisition ◽  
Spatial Data ◽  
Performance Test ◽  
Data Sets ◽  
Precise Position ◽  
Modern Computer ◽  
Ground Control Points ◽  
Gnss Receivers ◽  
Spatial Data Sets ◽  
3D Scene

Recent development of lightweight and small size multi-frequency GNSS receivers allows determination of the precise position of the moving platform and spatial data acquisition without the need for setting up and measuring of ground control points. The main advantage of this approach is a higher operational capacity with reduced time and cost of field measurement. This relates to fieldwork in inaccessible areas with demanding terrain configuration. In this paper development and use of a UAS with direct georeferencing of camera sensor for spatial data acquisition is described, and the possibility of 3D scene reconstruction based on the precise position of the camera with predetermined interior parameters is examined. Modern computer vision-based SfM photogrammetry algorithms are used for determining attitude parameters and reconstruction of the scene. For that purpose, several tests on two different test fields were performed using various system parameters for collecting and analysis of several spatial data sets. The presented results demonstrate a satisfactory accuracy (3.1 cm planar and 6.4 cm spatial) of the system for various applications in geodesy.

INES MOVIES : A NEW ACOUSTIC DATA ACQUISITION AND PROCESSING SYSTEM

1990 ◽  
Vol 51 (C2) ◽  
pp. C2-939-C2-942 ◽  
Author(s):  
N. DINER ◽  
A. WEILL ◽  
J. Y. COAIL ◽  
J. M. COUDEVILLE
Keyword(s):  
Data Acquisition ◽  
Processing System ◽  
Acoustic Data ◽  
Data Acquisition And Processing
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