Results 11 to 20 of about 5,796,492 (306)
Revitalizing Astronomical Azimuth Determination: Integrating Modern Computing with Traditional Techniques [PDF]
SensorsIt is not widely recognized today that astronomical methods for azimuth determination continue to rank among the most accurate techniques for establishing orientation.
Luigi Barazzetti
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Navigation techniques for large-scale astronomical exploration
SPIE Proceedings, 2006 Navigating effectively in virtual environments at human scales is a difficult problem. However, it is even more difficult to navigate in large-scale virtual environments such as those simulating the physical Universe; the huge spatial range of astronomical simulations and the dominance of empty space make it hard for users to acquire reliable spatial ...
Chi-Wing Fu +2 more
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The Calibration of the 35–40 GHz Solar Radio Spectrometer with the New Moon and a Noise Source
The Astrophysical Journal Supplement Series, 2023 Calibrating solar radio flux has always been a concern in the solar community. Previously, fluxes were calibrated by matching load or the new Moon for relative calibration, and at times with the assistance of other stations’ data. Moreover, the frequency
ZiQian Shang +9 more
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Dispersion Characteristics of the Multi-mode Fiber-fed VIPA Spectrograph
The Astronomical Journal, 2023 A high-resolution ( ${ \mathcal R }\gt {10}^{5}$ ), multi-mode fiber-fed spectrograph on large telescopes with a reasonable size is desirable in astronomy.
Xiaoming Zhu +4 more
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The Transformational Power of Frequency Phase Transfer Methods for ngEHT
Galaxies, 2023 (Sub) mm VLBI observations are strongly hindered by limited sensitivity, with the fast tropospheric fluctuations being the dominant culprit. We predict great benefits from applying next-generation frequency phase transfer calibration techniques for the ...
María J. Rioja +2 more
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Pulsar and Magnetar Navigation with Fermi/GBM and GECAM
The Astrophysical Journal Supplement Series, 2023 The determination of the absolute and relative position of a spacecraft is critical for its operation, observations, data analysis, scientific studies, as well as deep-space exploration in general.
Xi-Hong Luo +31 more
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Efficient Lossless Compression of Integer Astronomical Data [PDF]
, 2023 Each new generation of telescope produces increasingly larger astronomical data volumes, which are expected to reach the order of exabytes in the next decade.
Bartrina-Rapesta, Joan +3 more
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Astronomical site selection for Turkey using GIS techniques [PDF]
Experimental Astronomy, 2015 A site selection of potential observatory locations in Turkey have been carried out by using Multi-Criteria Decision Analysis (MCDA) coupled with Geographical Information Systems (GIS) and satellite imagery which in turn reduced cost and time and increased the accuracy of the final outcome. The layers of cloud cover, digital elevation model, artificial
Aksaker, N. +14 more
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Parametric High Resolution Techniques for Radio Astronomical Imaging [PDF]
IEEE Journal of Selected Topics in Signal Processing, 2008 The increased sensitivity of future radio telescopes will result in requirements for higher dynamic range within the image as well as better resolution and immunity to interference. In this paper we propose a new matrix formulation of the imaging equation in the cases of non co-planar arrays and polarimetric measurements. Then we improve our parametric
Chen Ben-David, Amir Leshem
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The Benefits of Using XML Technologies in Astronomical Data Retrieval and Interpretation [PDF]
, 2016 This paper describes a solution found during recent research that could provide improvements in the efficiency, reliability and cost of retrieving stored astronomical data.
Doicu, Adrian +67 more
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