Results 131 to 140 of about 493 (197)

Semi-Physical Simulation Method for Stellar Maps with Color Temperature Information. [PDF]

Sensors (Basel)
Zhang Y, Zhao B, Zhang K, Zhang J, Yang S, Yang D, Ren T, Ren D, Yang J, Sun J.   +9 more
europepmc   +1 more source

Microwave Receiving System Based on Cryogenic Sensors for the Optical Big Telescope Alt-Azimuth. [PDF]

Sensors (Basel)
Balega Y, Bubnov G, Chekushkin A, Dubrovich V, Edelman V, Gunbina A, Kapustin S, Khabarova T, Kukushkin D, Lapkin I, Mansfeld M, Maruhno A, Parshin V, Raevskiy A, Stolyarov V, Tarasov M, Valyavin G, Vdovin V, Yakopov G, Yusupov R, Zemlyanukha P, Zinchenko I.   +21 more
europepmc   +1 more source

Shedding new light on the context and temporality of Iberian warrior stelae: The Cañaveral de León 2 Stela and Las Capellanías burial complex (Huelva, SW Spain). [PDF]

PLoS One
García Sanjuán L, Rivera-Jiménez T, Díaz-Guardamino M, Wheatley D, Lozano Rodríguez JA, Donaire Romero T, González-García AC, Montero Artús R, Ruiz Flores J, Bermejo Meléndez J, Rogerio-Candelera MÁ, Ling J, Andrieux E, Bailiff I.   +13 more
europepmc   +1 more source

Active Compensation Technology for the Target Measurement Error of Two-Axis Electro-Optical Measurement Equipment. [PDF]

Sensors (Basel)
Lan L, Hua F, Fang F, Jiang W.
europepmc   +1 more source

A CNN-LSTM model using elliptical constraints for temporally consistent sun position estimation. [PDF]

Heliyon
Mpabulungi M, Yu K, Hong H.
europepmc   +1 more source

Oceanic and ionospheric tidal magnetic fields extracted from global geomagnetic observatory data. [PDF]

Philos Trans A Math Phys Eng Sci
Tyler RH, Trossman DS.
europepmc   +1 more source

Two distinct populations of dark comets delineated by orbits and sizes. [PDF]

Proc Natl Acad Sci U S A
Seligman DZ, Farnocchia D, Micheli M, Hainaut OR, Hsieh HH, Feinstein AD, Chesley SR, Taylor AG, Masiero J, Meech KJ.   +9 more
europepmc   +1 more source

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Comparison between the azimuths of astronomical and geodetic coordinates in Ghana

Journal of the Ghana Institution of Engineering (JGhIE), 2023
Astronomic azimuths are bearings, which are referenced to the true north direction whereas geodetic azimuths are those referenced to a grid north direction. The difference between these two directions can be expressed through the deflection of the vertical.
Asante , Cosmas, Ayer, John, Ziggah, Yao, Doku, Ebenezer   +3 more
openaire   +2 more sources

Astronomical Azimuth Determination by Lunar Observations

Journal of Surveying Engineering, 2016
AbstractThe moon is the brightest celestial body in the night sky, and it is of some value when determining the astronomical azimuth on a cloudy or foggy night or in a light-polluted city when there is no visible star. Based on the edge observations of the apparent moon using a total station, a global positioning system (GPS) receiver, a portable ...
Yinhu Zhan, Yong Zheng, Chao Zhang
openaire   +1 more source

The accuracy of astronomic azimuth determinations

Bulletin Géodésique, 1978
Astronomic azimuths are used in classical geodesy, through the Laplace equation, to control the orientation of geodetic networks. The method most commonly used by the United States National Geodetic Survey for the determination of astronomic azimuth is often referred to as the “direction method”, and is based on observations of Polaris at any hour ...
William E. Carter, James E. Pettey, William E. Strange   +2 more
openaire   +1 more source