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Sat, 01 Oct 2022 22:13:40 +0000
The Space Development Agency was officially transferred to the U.S. Space Force, Oct. 1.
The post Space Development Agency is now officially part of the Space Force appeared first on SpaceNews.
Sat, 01 Oct 2022 17:21:08 +0000
The U.S. Space Systems Command announced Sept. 30 it selected Firefly Space Transport Services and Millennium Space Systems to conduct a demonstration of a rapid-response space mission to low Earth orbit in 2023.
The post Firefly, Millennium Space selected for U.S. Space Force rapid-launch demonstration appeared first on SpaceNews.
Sat, 01 Oct 2022 14:52:26 +0000
Firefly Aerospace’s Alpha launch vehicle reached orbit on its second launch Oct. 1, more than a year after the vehicle’s first launch failed.
The post Firefly’s Alpha rocket reaches orbit on second launch appeared first on SpaceNews.
Fri, 30 Sep 2022 23:50:29 +0000
The FCC’s adoption of a new rule for disposal of low Earth orbit satellites is well-intentioned but pushing the limits of its authority, says the director of the Office of Space Commerce.
The post Office of Space Commerce: FCC “aggressively” pushing limits of authority with orbital debris rule appeared first on SpaceNews.
Fri, 30 Sep 2022 21:01:27 +0000
Doreen Bogdan-Martin will become the first woman to head the U.N.’s telecoms agency in its 157-year history from January, and the first American in the role since the 1960s after beating a Russian leadership challenge.
The post US candidate to be first woman to lead UN telecoms agency appeared first on SpaceNews.
Fri, 30 Sep 2022 17:42:25 +0000
The Space Surveillance Telescope, declared operational Sept. 30, will join the network of sensors used by the United States, Australia and other allies to track objects in orbit
The post Space surveillance telescope developed by the U.S. begins operations in Australia appeared first on SpaceNews.
Fri, 30 Sep 2022 16:33:25 +0000
The National Space Council plans to hold “learning sessions” with industry in coming weeks on how to develop a new regulatory framework for novel commercial space activities.
The post National Space Council to seek industry input on future regulatory framework appeared first on SpaceNews.
Fri, 30 Sep 2022 15:21:01 +0000
The Space Force expects to know by next spring what capabilities it will need to carry out space domain awareness activities in cislunar space.
The post Space Force studying requirements for cislunar space domain awareness appeared first on SpaceNews.
Fri, 30 Sep 2022 12:34:04 +0000
SEOUL, South Korea — South Korea’s science ministry plans to set aside 47.2 billion won ($32.9 million) in next year’s budget to launch two satellites that have been left grounded because of Western sanctions on Russia over the war in Ukraine. Once the requested budget is endorsed by congress, the ministry will nix the existing […]
The post South Korea seeks $32.9 million to launch satellites grounded by Russia sanctions appeared first on SpaceNews.
Fri, 30 Sep 2022 12:30:22 +0000
NASA and SpaceX announced Sept. 29 they will study a concept to send a Crew Dragon spacecraft to reboost, and possibly service, the Hubble Space Telescope to extend its life.
The post NASA and SpaceX to study possible private Hubble servicing mission appeared first on SpaceNews.
Fri, 30 Sep 2022 00:02:51 +0000
The Senate on Sept. 29 confirmed the nomination of Lt. Gen. B. Chance Saltzman for promotion to general and assignment as the chief of space operations of the U.S. Space Force
The post Senate confirms Saltzman as next chief of the U.S. Space Force appeared first on SpaceNews.
Thu, 29 Sep 2022 22:38:56 +0000
Viasat said Sept. 29 its inaugural ViaSat-3 satellite has started environmental tests after being put into flight configuration for the first time.
The post First ViaSat-3 enters environmental testing appeared first on SpaceNews.
Thu, 29 Sep 2022 21:51:24 +0000
4iG, a Hungarian provider of terrestrial communications, plans to buy a majority stake in Israeli satellite operator Spacecom in stages following resistance from Israel’s government.
The post Hungary’s 4iG to buy a majority of Spacecom in stages appeared first on SpaceNews.
Thu, 29 Sep 2022 21:14:23 +0000
Air Force Secretary Frank Kendall said China and Russia "have been working on offensive capability to counter our space systems."
The post Kendall: Power competition in space becoming more destabilizing appeared first on SpaceNews.
Thu, 29 Sep 2022 20:23:07 +0000
Nearly two-thirds of the debris tracked from last year’s Russian anti-satellite (ASAT) test has since deorbited, but it could take more than a decade for the rest to reenter.
The post Majority of tracked Russian ASAT debris has deorbited appeared first on SpaceNews.
Thu, 29 Sep 2022 16:39:10 +0000
The FCC adopted a new rule Sept. 29 that will shorten the time for satellite operators to deorbit low Earth orbit satellites from 25 to 5 years.
The post FCC approves new orbital debris rule appeared first on SpaceNews.
Thu, 29 Sep 2022 11:44:34 +0000
NASA and Astra Space have revised a launch contract originally awarded for the launch of a cubesat constellation after Astra retired the launch vehicle that would have launched those spacecraft.
The post NASA and Astra modify TROPICS launch contract appeared first on SpaceNews.
Thu, 29 Sep 2022 10:24:01 +0000
Ahead of a Federal Communications Commission vote on a proposal to set a five-year deadline for deorbiting low Earth orbit satellites, leaders of the House Science Committee are questioning the FCC’s authority to do so.
The post House committee questions FCC orbital debris rule appeared first on SpaceNews.
Thu, 29 Sep 2022 00:05:41 +0000
With space essential to military operations, better understanding of what objects are in orbit and the threats they may pose is “foundational” for space security, a Space Force general said.
The post Guetlein: improved space domain awareness essential for national security appeared first on SpaceNews.
Wed, 28 Sep 2022 23:45:04 +0000
Some space company leaders are embracing the trend toward remote work. Others caution against it. In any case, the pandemic has changed the calculus for current and prospective employees.
The post Shift to remote work draws mixed reactions appeared first on SpaceNews.
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CV: Senior researcher
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Candidate Profile
Date Submitted: Last Modified:Job information
Current job: Employment Term: Job location: Date available: Industry: KeywordsCV
SUMMARY
I have been working in applied mathematics and physics for more than ten years. I have acquired this background through my experience in research fields such as, for example, astrophysics, signal processing and parameter estimation methods for time series. My programming experience spans algorithm development and test, and implementing numerical methods using physics principles in different programming languages as, for instance, C, C++, Fortran, Matlab and Maple.
COMPUTER SKILLS
Languages
· C language: Since 1998 I have acquired knowledge and experience with C through some Bachelor and PhD degree subjects and research (in Physics and Engineering).
· Fortran77: From 2000 until 2008 I have worked with Fortran 77 for numerical computation in order to solve differential equations, linear equation systems, matrix inversion problems and apply Bayesian statistics for modeling regression.
· Bash: In order to install and use different software in different computers and clusters, I have got experience with Bash scripts.
Software
· Matlab: Since 2009 I also work with Matlab for modeling regression, numerical calculus, Bayesian statistics, MCMC simulations, data analysis and matrix calculus. Namely, I have developed and used algorithms for estimating parameters with Monte Carlo Markov Chain methods, linear regression
modeling, spectral analysis of stochastic time series, matrix inversion, several matrix calculus algorithms such as, for example, Cholesky and iterative algorithms (e.g. conjugate gradient) and random number generators.
· Others: Latex, Word, Excel, Power-Point, Maple.
· OS: Linux (since 2000) and Windows (since 1995).
EXPERIENCE
15/11/2010-15/11/2013
Senior Researcher, University of Luxembourg
· I have worked on parameter estimation in stochastic time series, e.g. GPS position time series. The goal was to simultaneously estimate model and noise parameters, including the spectral index of the spectrum of the noise, which, so far, has been avoided by the geodesy and geophysics communities. With this more comprehensive parameter estimation method (using Bayesian Monte Carlo Markov Chain) uncertainties of estimated parameters are more robust and up to 40% times larger than in previous works. This research ended up with two publications in peer-reviewed journals and a thesis (PhD in Engineering).
· I have worked as co-responsible of homework supervision of Lectures in Statistics in the Bachelor degree in Civil Engineering, and as supporting professor of Physics Laboratory in the Bachelor degree in Life Sciences.
08/01/2010-08/04/2010
Supporting Professor, Universitat Politècnica de Catalunya
· Responsible for the module applied in mathematics of the first course in the Bachelor degree in Economics.
15/09/2000-15/09/2008
Teaching Assistant and Researcher, Universitat Autònoma de Barcelona
· Taught courses at various levels in: general physics, linear algebra, real analysis, computational methods for physics (C language).
· In 2007 I defended a thesis in Physics which was recognized by the University with an Excellency Award, prize given by the University to fewer than 20% of all theses graded with the highest mark 'Cum Laude'.
· During this period I gave some talks and presented results of my research in different international conferences and seminars.
EDUCATION
15/11/2010-21/11/2013
Doctorate in Engineering, University of Luxembourg
Thesis: “Analysis and parameter estimation of geophysical time series by means of Monte Carlo Markov Chains”
The main goal was to develop a Monte Carlo Markov Chains (MCMC) method that simultaneously estimates all parameters of GPS position time series.
With this more comprehensive parameter estimation MCMC method, uncertainties of estimated parameters, e.g. the velocity, are more robust and up to 40% times larger than methods that do not estimate the uncertainty of the esti mated spectral index.
For shorter time series and time series with low levels of noise it was shown that the white noise amplitude estimated with the MCMC method was more robust and less biased than with the Maximum Likelihood Estimation method.
Numerical methods used included: Bayesian statistics for data analysis, Monte Carlo Markov Chain simulation, Linear Algebra, Matrix Inversion, Time Series Analysis.
Software was developed using: Matlab, C, Shell script and OS Linux.
15/09/2003-30/06/2007
Doctorate in Physics, Universitat Autònoma de Barcelona
Thesis: “Constraining interacting cosmological models with observational data”, recognized by the University with an Excellency Award, prize given by the University to fewer than 20% of all theses graded with the highest mark 'Cum Laude'.
WMAP, SDSS, 2dF and Supernova Ia observational data were used, by means of Bayesian Statistics analysis and Monte Carlo Markov Chains simulations, to constrain the cosmological parameters of theoretical models.
Numerical methods used included: Runge-Kutta method to solve differential equations, numerical integration methods (Monte Carlo, Romberg), interpolation methods (splines), Bayesian statistics for data analysis, Monte Carlo Markov chain simulation.
The main goal was to study the effects of dark matter-dark energy interaction on the cosmological expansion rate, Cosmic Microwave Background perturbations spectrum, Integrated Sachs Wolfe effect, and Large Scale Structure distribution.
Software was developed using: FORTRAN 77, C, C++, Maple, Shell script, IDL and OS Linux.
15/09/2009-23/07/2010
Master Degree in Space Science and Technology, Universitat Politècnica de Catalunya
Applicable courses covered: : Astrodynamics, Radionavigation, Analog and Digital Signal Processing, Broadening of Fundamentals in Aerospace Science and Technology, Numerical Methods for Aerospace Engineering Systems (embracing the study of general algorithms – regula Falsi, Newton-Raphson – and interpolation schemes - splines -, plus methods to solve ordinary and partial differential equations – Runge-Kutta, Finite Element Method), Space Systems Engineering, Test and Instrumentation Systems in Aerospace Applications.
Thesis: “Selection of first principle constraints to improve the ionospheric tomography with GNSS” (in progress)
15/09/1993-23/06/2000
Bachelor and Master Degrees in Physics, Universitat Autònoma de Barcelona
Applicable courses covered: General Physics (120 hours), Physics Laboratory (Mechanics, Electromagnetism, Thermodynamics – 300 hours) Classical Mechanics (180 hours), General Relativity (60 hours), Optics (120 hours), Quantum Optics (60 hours), Optics Laboratory (120 hours), Electronics (120 hours).
LANGUAGE SKILLS
Spanish (mother tongue)
Catalan (mother tongue)
English (C1)
French (B1)
PEER-REVIEWED PUBLICATIONS
Olivares, G., Teferle, F.N. , “A Monte Carlo Markov Chain Method for Parameter Estimation of Fractional Differenced Gaussian Processes”, IEEE Transactions on Signal Processing, vol. 61, no. 9, pp. 2405-2412, (2013). Article with 4 cites.
Gazeaux, J., Williams, S., Matt, K., Bos, M., Dach, R., Deo, M., Moore, A.W., Ostini, L., Petrie, E., Roggero, M., Teferle, F.N., Olivares, G., Webb, F.H., “Detecting offsets in GPS time series: First results from the detection of offsets in GPS experiment”, Journal of Geophysical Research: Solid Earth, vol. 118, pp. 111, (2013).
Olivares, G., Atrio-Barandela, F., Pavón, D., “The Integrated Sachs-Wolfe Effect in Interacting Dark Energy Models”, Phys.Rev. D77, 103520, (2008). Article with 16 cites.
Olivares, G., Atrio-Barandela, F., Pavón, D., “Dynamics of Interacting Quintessence Models: Observational Constraints”, Phys.Rev. D77, 063513, (2008). Article with 39 cites.
Olivares, G., Atrio-Barandela, F., Pavón, D., “Constraining dark energy interacting models with WMAP”, AIP Proceedings of the XXVIII Spanish Relativity Meeting. Pp. 550-553, (2006), ISBN 0-7354-0333-3.
Olivares, G., Atrio-Barandela, F., Pavón, D., “Matter density perturbations in interacting quintessence models”, Phys.Rev. D74, 043521, (2006). Article with 63 cites.
Campo, S. del, Herrera, R., Olivares, G., Pavón, D., “Interacting models of soft coincidence”, Phys.Rev. D74, 023501, (2006). Article with 36 cites.
Olivares, G., Atrio-Barandela, F., Pavón, D., “Observational constraints on interacting quintessence models”, Phys. Rev. D71, 063523, (2005). Article with 89 cites.
OTHER PUBLICATIONS
Olivares, G., Teferle, F.N., “A Comparison of Monte Carlo Markov Chain and Maximum Likelihood Estimation Methods for the Statistical Analysis of Geodetic Time Series”, AGU Fall Meeting 2013, San Francisco, USA, 9-13 December 2013 (Poster).
Olivares, G., Teferle, F.N., “A Bayesian Monte Carlo Markov Chain Method for the Statistical Analysis of Geodetic Time Series, IAG 2013, Potsdam, Germany, 01-06 September 2013 (Oral).
Olivares, G., Teferle, F.N., “A Bayesian Monte Carlo Markov Chain Method for the Analysis of GPS Position Time Series”, EGU General Assembly 2013, Vienna, Austria, 07-12 April 2013 (Oral).
Olivares, G., Atrio-Barandela, F., Pavón, D., “Interacting Quintessence Models”, Ibéricos 2008. IIIrd Iberian Cosmology Meeting, Lisboa, Portugal., 6-7 March 2008 (Oral).
Olivares, G., Atrio-Barandela, F., Pavón, D., “The Coincidence Problem in Cosmology”, XXX Spanish Relativity Meeting (E.R.E. 2007). EAS Publication Series, Volume 30, 2008. Spanish Relativity Meeting. Encuentros Relativistas Españoles ERE2007. Relativistic Astrophysics and Cosmology. Edited A. Oscoz, E. Mediavilla, M. Serra-Ricart. EDP Sciences (Les Ulis, Francia). ISBN 978-2-7598-0062-9, e-ISBN 1638-1963, Puerto de la Cruz, Tenerife, Spain, 10-14 September 2007 (Oral).
Olivares, G., Atrio-Barandela, F., Pavón, D., “Observational tests for constraining Interacting Quintessence Models”, Seminar of the Dept. of Astronomy and Astrophysics, University of Pennsylvania, Philadelphia, USA, September 2006 (Oral).
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