Results 31 to 40 of about 3,462,857 (219)
Statistical prediction of satellite magnetic anomalies [PDF]
Geophysical Journal International, 1990 Computationally rapid statistical procedures are presented for satellite altitude normalizations and the gridding of magnetic anomaly data, as an alternative to the more commonly used but computationally expensive equivalent-source inversion procedures.
H. K. Goyal +3 more
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Magnetic Damping of Rotation of Satellite 1958β2
Science, 1959 From over 200 observations of the decreasing spin rate of Vanguard I made during the year since its launching, eddy-current induction theory yields 0.115 ± 0.001 gauss as the mean magnetic field normal to the spin axis of the satellite. This measured value agrees with that deduced from Bauer's model of the earth's dipole field.
openaire +3 more sources
Geochemistry, Geophysics, GeosystemsGravity data provide constraints on lateral subsurface density variations and thus provide crucial insights into the geological evolution of the region.
Kim Senger +19 more
doaj +1 more source
Estimating global ocean heat content from tidal magnetic satellite observations
Scientific Reports, 2019 Ocean tides generate electromagnetic (EM) signals that are emitted into space and can be recorded with low-Earth-orbiting satellites. Observations of oceanic EM signals contain aggregated information about global transports of water, heat, and salinity ...
C. Irrgang, J. Saynisch, Maik Thomas
semanticscholar +1 more source
Utility of correlation techniques in gravity and magnetic interpretation [PDF]
Internal correspondence uses Poisson's Theorem in a moving-window linear regression analysis between the anomalous first vertical derivative of gravity and total magnetic field reduced to the pole.
Braice, L. W. +3 more
core +4 more sources
SOAR (Support Office for Aerogeophysical Research) Annual Report 1994/1995 [PDF]
, 1995 The Support Office for Aerogeophysical Research (SOAR) was a facility of the National Science Foundation's Office of Polar Programs whose mission is to make airborne geophysical observations available to the broad research community of geology ...
Bell, Robin E. +2 more
core +1 more source
Geophysical Research Letters, 2019 This paper reports on new results in the determination of magnetic signals produced by oceanic tides as estimated from satellite magnetic measurements.
A. Grayver, N. Olsen
semanticscholar +1 more source
The re-emission spectrum of digital hardware subjected to EMI [PDF]
, 2003 The emission spectrum of digital hardware under the influence of external electromagnetic interference is shown to contain information about the interaction of the incident energy with the digital circuits in the system.
Fischer, K +4 more
core +1 more source
OPTIMAL DISCRETE-TIME MAGNETIC ATTITUDE CONTROL OF SATELLITES [PDF]
IFAC Proceedings Volumes, 2005 Abstract The problem of designing discrete-time attitude controllers for magnetically actuated spacecraft is considered. Several methods are discussed and a novel approach to the tuning of ”projection based” controllers is proposed relying on periodic optimal output feedback control techniques. The main advantages of the proposed method are discussed
LOVERA, MARCO, A. Varga
openaire +3 more sources
Spacecraft magnetic attitude control using approximating sequence Riccati equations [PDF]
, 2015 This paper presents the results of a spacecraft attitude control system based on magnetic actuators designed for low Earth orbits. The control system is designed by using a nonlinear control technique based on the approximating sequence of Riccati ...
Bernelli Zazzera, Franco +2 more
core +1 more source