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An ultra stable optical bench for the magnetic survey satellite
Acta Astronautica, 1980Abstract An optical bench has been designed and built that must hold the alignment of five optical elements to deflections of 1–2 arc s during orbital operation. In addition, it must suffer no alignment changes during the launch and prestabilization phase of the mission.
C. Wingate, T. B. Coughlin, R. Sullivan
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Detection of fast secular variations based on the data of satellite magnetic surveys
Geomagnetism and Aeronomy, 2010The usage of only the vector satellite survey data made it possible to detect rapidly developing anomalies of the secular variations with the foci in central Asia and Indian Ocean. It has been indicated that the field at the foci increased by several hundred nanoteslas for eight years.
V. Golovkov, S. Yakovleva, T. Zvereva
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MAGSAT--A new satellite to survey the earth's magnetic field
IEEE Transactions on Magnetics, 1980The MAGSAT satellite was launched on October 30, 1979 into a sun-synchronous dawn-dusk orbit, of 97° inclination, 350 km perigee, and 550 km apogee. It contains a precision vector magnetometer and a cesium-vapor scalar magnetometer at the end of a 6m long graphite epoxy scissors boom. The magnetometers are accurate to 2γ.
F. Mobley +3 more
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A survey on active magnetic attitude control algorithms for small satellites
Progress in Aerospace Sciences, 2019Abstract Control algorithms for the active magnetic attitude control systems are covered in the survey. Three different situations in the magnetic system implementation are considered. First, angular velocity damping is covered. Second part is devoted to the combined operation of the active magnetic system with other actuators and with the help of ...
M. Yu. Ovchinnikov, D.S. Roldugin
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Journal of Astronomical Telescopes Instruments and Systems
. The PRIMAger instrument on board the proposed PRIMA satellite will offer the unprecedented capability to obtain hundreds of square-degree maps in polarized emission at sub-arcminute resolution in four Far-IR bands.
Sergio Molinari +10 more
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. The PRIMAger instrument on board the proposed PRIMA satellite will offer the unprecedented capability to obtain hundreds of square-degree maps in polarized emission at sub-arcminute resolution in four Far-IR bands.
Sergio Molinari +10 more
semanticscholar +1 more source
Vertical gradient of the geomagnetic field by multiple altitude aeromagnetic survey
Доклады Российской академии наук. Науки о Земле / Doklady Earth SciencesModern geophysical survey technologies are progressing fast. One notable milestone of this progress is substantial increase of georeferencing performance with benefits of advanced satellite radionavigation.
I. M. Aleshin
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Journal of Archaeological Science: Reports, 2017
Abstract La Playa (SON F:10:3) in Sonora, Mexico is the single largest Early Agricultural period (2100 BCE–50 CE) site in the Greater Southwest. Modern erosion is rapidly destroying large portions of the archaeological site, highlighting the urgent need for documentation of threatened archaeological structures and features.
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Abstract La Playa (SON F:10:3) in Sonora, Mexico is the single largest Early Agricultural period (2100 BCE–50 CE) site in the Greater Southwest. Modern erosion is rapidly destroying large portions of the archaeological site, highlighting the urgent need for documentation of threatened archaeological structures and features.
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SPE Annual Technical Conference and Exhibition
Solar storms create large fluctuations in the magnetic field over short time scales. Most wellbores today are surveyed using magnetic survey tools and, if handled improperly, these fluctuations can cause large wellbore positioning errors. Historically,
T. Ziehm +5 more
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Solar storms create large fluctuations in the magnetic field over short time scales. Most wellbores today are surveyed using magnetic survey tools and, if handled improperly, these fluctuations can cause large wellbore positioning errors. Historically,
T. Ziehm +5 more
semanticscholar +1 more source
Magnetic braking and dynamo evolution of β Hydri
Astronomy & AstrophysicsThe evolution of magnetic braking and dynamo processes in subgiant stars is essential for understanding how these stars lose angular momentum. In this work, we investigate the magnetic braking and dynamo evolution of the G-type subgiant to test the ...
A.R.G. Santos +5 more
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Magnetic activity of RS CVn stars based on TESS and LAMOST surveys
Astronomy & AstrophysicsAims: Understanding flare activity in RS CVn stars is crucial for elucidating their magnetic activity properties. This study aims to conduct a detailed statistical analysis of stellar flare characteristics in RS CVn-type stars using data from the ...
Lulu Xu +7 more
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