Results 231 to 240 of about 1,012,195 (280)

On Deflection of the Vertical Components and Their Transformations

Journal of Surveying Engineering, - ASCE, 2014
AbstractThe deflection of the vertical is an important parameter that combines both physical (astronomic) and geometric (geodetic) determined quantities. This paper introduces an alternative didactic approach based on rotations of three-dimensional right-handed local frames that simplifies such concepts as the derivation of Laplace’s equation and ...
Jen-Yu Han, Tomáš Soler
exaly   +2 more sources

New Transformerless Vertical Deflection Systems

IEEE Transactions on Broadcast and Television Receivers, 1970
A current drive transformerless vertical deflection system is presented. The system employes a constant current source and variable current source with a complementary current amplifier output to function as a bidirectional current source.
exaly   +2 more sources

Formulas and tables for the deflection of the vertical

Eos, Transactions American Geophysical Union, 1938
The use of the spheroid of revolution as representative of the figure of the Earth rests on the assumption of a regular distribution of matter. The fact that there is an irregular distribution is patent to everyone—there are hills, valleys, plains, mountains, and oceans.
Walter D. Lambert, Frederic W. Darling
openaire   +2 more sources

ASTRONOMIC DETERMINATIONS OF DEFLECTION OF THE VERTICAL

Survey Review, 1983
Abstract Astronomic determinations of latitude and longitude are dealt with. The results of geoastronomic observations performed in the seismic area of Ancona (Italy) are discussed. The possibility of achieving accurate results by adopting a quick and efficient procedure both in the operational and computational stages is considered.
ACHILLI, VLADIMIRO, BALDI P., ZERBINI S.
openaire   +2 more sources

Deflections of the vertical at Potsdam

Studia Geophysica et Geodaetica, 1967
Определяется абсолютнсе уклонение отвеса в исходном пункте Потсдам относительно астрономического эллипсоидаa=6378 160 м, α=1∶298,25. В выводе использованы 2 метода: посредством уравнения общего уклонения отвеса (2) и через общее уравнение Лапласа (3). В качестве исходного материала был использован каталог Бомфорда уклонений отвеса в т. наз. Европейской
openaire   +1 more source

Methods for determining deflections of the vertical on a moving base

Gyroscopy and Navigation, 2016
The basic methods for determining deflections of the vertical on a moving base are considered. The classification criteria of these methods are proposed. The comparative analysis of the methods has been performed based on the proposed criteria.
V.N. Koneshov, M. I. Evstifeev, I. B. Chelpanov, O. M. Yashnikova   +3 more
openaire   +1 more source

Deflections of the vertical in New Britain

Eos, Transactions American Geophysical Union, 1957
Nineteen astronomic observations made in connection with a control survey by Australian and U. S. Army topographic forces of the island of New Britain (Territory of Papua and New Guinea) indicate unusually large deflections of the vertical throughout the 450 km length of the island.After adjusting the datum to minimize the deflections, the rms of ξ is ±
openaire   +1 more source

On the absolute deflection of the vertical at Potsdam

Bulletin géodésique, 1954
After a numerical comparison of geoidal surfaces, the author finds confirmed the values of the deflection of the vertical at Potsdam, as given by ProfessorLedersteger. These values should, however, not be considered as definitive before the value determined by means of the profile of the gravimetrically obtained geoid, will be in sufficient agreement ...
openaire   +1 more source

Deflections of the vertical in the high tatras

Studia Geophysica et Geodaetica, 1965
На основе гравиметрических данных были вычислены уклонения отвеса для пяти пунктов в Бысоких Татрах по методу Молоденского. При вычислениях был использован опыт полученный при определениях поправок за рельеф в ЧССР. Гравиметрическая система уклонений отвеса сравнивалась с системой астрономо-геодезических и с системой тригонометрических уклонений отвеса.
openaire   +1 more source

Improvements in the computation of deflections of the vertical by FFT

Physics and Chemistry of the Earth, 1998
Abstract Deflections of the vertical are computed by the effective FFT method using the Vening Meinesz integral formula in spherical convolution form. The gravimetric deflection components are compared with those derived by the planar FFT techniques as well as with observed astrogeodetic components in order to assess the improvements, in terms of ...
I.N. Tziavos, V.D. Andritsanos
openaire   +1 more source