Results 141 to 150 of about 4,454,730 (199)

Niinisalo calibration base line

open access: yes, 1970
Kiviniemi, Aimo
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Geodetic Network Design for InSAR

IEEE Transactions on Geoscience and Remote Sensing, 2015
Ground deformation can be monitored with subcentimetric precision from space, using interferometric synthetic aperture radar (InSAR). This technique can sometimes be limited by a low density of naturally occurring phase-coherent radar targets. Measurement densification may be achieved through improvements in processing algorithms and new satellites ...
Pooja S. Mahapatra   +2 more
openaire   +2 more sources

Detecting Configuration Weaknesses in Geodetic Networks

Survey Review, 2011
Abstract In geodetic networks, probable failures in the outlier detection arise not only due to ability of outlier detection methods, but also due to the weakness in the configuration of the networks. The purpose of this paper is to detect this weakness by cross-checking the observations for existing geodetic networks or at design stage.
ERDOĞAN, Bahattin   +3 more
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OPTIMISATION OF GEODETIC NETWORKS

Survey Review, 1973
AbstractThe theory required to obtain the error ellipses of network stations without using the actual values of the observations forming the network is given. The importance of this concept in the optimisation of geodetic networks is pointed out by means of an example.
J. S. Allman, G. J. Hoar
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Geodetic Datum and Geodetic Control Networks

2014
To measure terrain, surface features, position coordinates, heights, and gravity values at points on the Earth’s surface, there need to be corresponding reference points or surfaces (also known as datum points or surfaces), namely geodetic datums, to which surveying and mapping results are referred. Geodetic datums consist chiefly of coordinate datums (
Zhiping Lu, Yunying Qu, Shubo Qiao
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On the Geodetic and Strong Geodetic Parameters of Certain Hypercubic Networks

Journal of Interconnection Networks
Networks derived from the hypercube are noted for their efficiency in simulating any bounded-degree communication network and hence they play a significant role in parallel machines. For a graph [Formula: see text], a geodetic cover is a subset [Formula: see text] of [Formula: see text], satisfying the condition that every vertex of [Formula: see text]
S. Gajavalli, A. Berin Greeni
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Restrictions in Geodetic Networks

Journal of Surveying Engineering, 1990
The mathematical model of the adjustment of a geodetic network is generally supplemented by restrictions concerning the unknown parameters. This can occur with datum problems or by constraints resulting from the formulation of the problem. A method is presented that, at a large number of restrictions, works more economically than the commonly used way ...
A. Grimm‐Pitzinger, K. Hanke
openaire   +1 more source

Optimization of Geodetic Networks

The Canadian Surveyor, 1974
Optimization of geodetic networks is classified in different orders. (1) Zero-order design solves the geodetic datum problem of how to transform geodetic measurements into absolute Cartesian coordinates. (2) First-order and (3) second-order design are closely related to find an optimaI configuration and an optimal observational weight within a ...
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Geodetic Networks in Mexico

The Canadian Surveyor, 1974
In the paper the evolution of the Mexican geodetic network is described ending with its actual situation, present needs and plans for the near future, with special reference to the participation of Mexico in the readjustment of the North American network.
openaire   +1 more source

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