Results 81 to 90 of about 201,777 (208)

GOES I/M image navigation and registration [PDF]

open access: yes
Image Navigation and Registration (INR) is the system that will be used on future Geostationary Operational Environmental Satellite (GOES) missions to locate and register radiometric imagery data.
Fiorello, J. L., Jr.   +3 more
core   +1 more source

Probabilistic Initial Orbit Determination

open access: yes, 2016
Future space surveillance requires dealing with uncertainties directly in the initial orbit determination phase. We propose an approach based on Taylor differential algebra to both solve the initial orbit determination (IOD) problem and to map uncertainties from the observables space into the orbital elements space. This is achieved by approximating in
ARMELLIN, ROBERTO, DI LIZIA, PIERLUIGI
openaire   +3 more sources

Realtime Precise Orbit Determination Technology for LEO Mega-Constellation

open access: yes天地一体化信息网络
Supported by GNSS, it analyzed the advantages and disadvantages of solving LEO satellite orbit on the ground or onboard the satellites.The high-fidelity non-conservative force models were applied to the real-time orbit determination algorithm.To separate
Zhen LI, Chuang SHI
doaj   +2 more sources

Hole Spin Helix: Anomalous Spin Diffusion in Anisotropic Strained Hole Quantum Wells

open access: yes, 2014
We obtain the spin-orbit interaction and spin-charge coupled transport equations of a two-dimensional heavy hole gas under the influence of strain and anisotropy. We show that a simple two-band Hamiltonian can be used to describe the holes.
Bernevig, B. Andrei   +1 more
core   +1 more source

Special studies of AROD systems, concepts and designs Final report [PDF]

open access: yes
Design and evaluation of development model for airborne range and orbit determination ...
Ghais, A. F.
core   +1 more source

Bistatic SAR Imaging and Precise Orbit Determination Using Geostationary Telecommunication Satellites

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
SAR satellite missions from geostationary orbits (GEOSAR) would offer the short revisit times required in the observation of fast phenomena. Ground-based multiple baseline interferometry is a technique under study for precise orbit determination of GEO ...
Xavier Carreno-Megias   +5 more
doaj   +1 more source

A multi-satellite orbit determination problem in a parallel processing environment [PDF]

open access: yes
The Engineering Orbit Analysis Unit at GE Valley Forge used an Intel Hypercube Parallel Processor to investigate the performance and gain experience of parallel processors with a multi-satellite orbit determination problem.
Anderle, R. J., Deakyne, M. S.
core   +1 more source

Preliminary Orbit Determination System (PODS) for Tracking and Data Relay Satellite System (TDRSS)-tracked target Spacecraft using the homotopy continuation method [PDF]

open access: yes
The Preliminary Orbit Determination System (PODS) provides early orbit determination capability in the Trajectory Computation and Orbital Products System (TCOPS) for a Tracking and Data Relay Satellite System (TDRSS)-tracked spacecraft.
Broaddus, S. R.   +3 more
core   +1 more source

A comparison of operationally determined atmospheric densities from satellite orbit solutions and the exospheric temperature from the Jacchia-Roberts model [PDF]

open access: yes
Operational orbit determination by the Flight Dynamics Division at the Goddard Space Flight Center has yielded a data base of orbit solutions covering the onset of solar cycle 22.
Phenneger, M. C.   +2 more
core   +1 more source

Navigation strategy and filter design for solar electric missions [PDF]

open access: yes
Methods which have been proposed to improve the navigation accuracy for the low-thrust space vehicle include modifications to the standard Sequential- and Batch-type orbit determination procedures and the use of inertial measuring units (IMU) which ...
Hagar, H., Jr., Tapley, B. D.
core   +1 more source

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