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Wed, 17 Aug 2022 22:33:22 +0000
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Wed, 17 Aug 2022 22:29:55 +0000
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Wed, 17 Aug 2022 03:22:48 +0000
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Tue, 16 Aug 2022 22:20:51 +0000
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Tue, 16 Aug 2022 21:53:18 +0000
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Tue, 16 Aug 2022 20:48:19 +0000
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Tue, 16 Aug 2022 14:15:36 +0000
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Tue, 16 Aug 2022 11:20:54 +0000
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Tue, 16 Aug 2022 11:10:43 +0000
A Chinese reusable experimental spacecraft remains in orbit nearly two weeks after launch, despite passing directly over its expected landing site early Monday. The post China’s spaceplane remains in orbit but clues emerge from recovered launch debris appeared first on SpaceNews.
Mon, 15 Aug 2022 21:00:06 +0000
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Mon, 15 Aug 2022 17:02:15 +0000
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Mon, 15 Aug 2022 15:29:26 +0000
The U.S. Air Force Special Operations Command awarded SpaceX a $1.9 million one-year contract to provide Starlink internet services in Europe and Africa starting this month. The post SpaceX gets $1.9 million Air Force contract for Starlink services in Europe and Africa appeared first on SpaceNews.
Sun, 14 Aug 2022 23:22:53 +0000
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Sun, 14 Aug 2022 22:39:58 +0000
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Sun, 14 Aug 2022 21:00:09 +0000
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Sun, 14 Aug 2022 09:15:04 +0000
Satellite ground stations that for decades have been operated by the U.S. Army will be officially handed over to the Space Force on Aug. 15. The post U.S. Army hands over satellite operations to Space Force, but keeps a foothold in space appeared first on SpaceNews.
Sat, 13 Aug 2022 21:43:50 +0000
NASA and the U.S. Space Force have resolved an issue with the flight termination system on the Space Launch System that could have cut short the vehicle’s inaugural launch campaign. The post NASA, Space Force resolve SLS flight termination system issue appeared first on SpaceNews.
Fri, 12 Aug 2022 21:46:55 +0000
Vice President Kamala Harris said Aug. 12 that the National Space Council will work to revise commercial space regulations that have become “simply outdated” as the industry evolves. The post Harris says U.S. to update commercial space regulations appeared first on SpaceNews.
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  • CV: Engineer (Ph.D Orbital Mechanics)

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    Personal information
     Name:<withheld>
     Age:<withheld>
     Country:<withheld>
     Location:<withheld>
    Contact information
     Email:<withheld>
     Phone:<withheld>
     Mobile:<withheld>
    Candidate Profile
     Date Submitted:04-05-2011
     Last Modified:05-05-2011 (07:16)
    Job information
     Current job:Engineer (Ph.D Orbital Mechanics)
     Employment Term:Permanent
     Job location:Own country
     Date available:within 2 months
     Industry:Civil Agencies/International Organizations, Satellite Manufacturers and Subcontractors, Satellite Operators, Launch Systems, Consulting/Engineering Services, Space Tourism
     KeywordsOrbital mechanics, estimation theory, LiDAR
    CV

    EXPERIENCE

     

    Sigma Space at NASA Wallops Flight Facility

    Engineer                              August 2010-Present

    Member of Airborne Topography Mapper Team with Operation IceBridge

    ·           Developed repeat track analysis tools with C and UNIX scripts

    ·           Used repeat track analysis results to analyze ice sheet elevation changes

    ·           Procured Cryosat data and compared to ATM and ICESat ice sheet data

    ·           Developed estimation code for computing laser pointing angle and mounting biases from comparisons between airborne surveys and ground surveys

    ·           Participated in field deployments for Operation IceBridge surveys over Antarctica and Greenland with DC-8 and P-3 aircraft, which included the following activities:

    ·         Assisted with ATM laser calibration before installation

    ·         Assisted with ATM navigation and laser equipment installation on the DC-8 at NASA Dryden and the P-3 at NASA Wallops

    ·         Assisted with GPS antenna set-up in Punta Arenas, Chile

    ·         Assisted with ground survey in El Mirage, California for laser pointing angle and mounting bias calibration

    ·         Used onboard navigation computers to guide aircraft on survey flightlines

    ·         Operated lasers during surveys

    ·         Assisted with troubleshooting equipment problems for lasers and navigation equipment

     

     

    University of Texas Center for Space Research

    Graduate Research Assistant                        2002-2010

    Member of ICESat Research Group

    ·           Developed repeat track analysis tools with Fortran 90 and UNIX scripts

    ·           Used repeat track analysis results to analyze ice sheet elevation changes

    ·           Generated ICESat predicted orbits using CSR proprietary software

    ·           Improved code for computing crossovers (intersections between ground tracks)

    ·           Generated crossovers for ICESat ice sheet elevation data with Fortran 90 and UNIX scripts

    ·           Wrote code to match ICESat laser waveform data with corresponding elevation data

    ·           Participated in ICESat II preliminary laser configuration case studies: used simulated data to evaluate ability of potential laser configurations to provide sufficient data density to determine elevation change rates for the ice sheets

    ·           Set up timing detector array in ground operations for ICESat laser pointing calibration at White Sands Missile Range

    ·           Navigator for airborne photography for ICESat laser pointing calibration at White Sands Missile Range

     

    LiDAR Research Assistant

    ·           Set up GPS base stations for airborne LiDAR surveys

    ·           Navigator for airborne LiDAR surveys over White Sands Missile Range and National Park, Mississippi, California coast, Texas coast, Texas A&M, and the Dominican Republic

    ·           Performed LiDAR data transfers for airborne LiDAR surveys

     

     

    University of Texas Center for Space Research

    Undergraduate Research Assistant                                      2001-2002

    ·           Registered satellite images by comparison with images containing geolocation information

    ·           Classified hyperspectral satellite images into different vegetation types

    ·           Analyzed and organized LandSat images

    ·           Co-wrote CSR user manual for GSS GPS simulator

     

    EDUCATION

    University of Texas at Austin

    Ph.D, Aerospace Engineering, Orbital Mechanics                          2005-2010

    Dissertation: Sensitivity Analysis of Repeat Track Estimation Techniques for Detection of Elevation Change

    M. S., Aerospace Engineering, Orbital Mechanics                          2002-2005

    Thesis: The Inapplicability of Mean Orbital Element Computation Methods to Frozen Orbits

    B. S., Aerospace Engineering                               1998-2002

     

    Relevant Coursework: Estimation Theory, Celestial Mechanics, Optimal Control Theory, Optimal Spacecraft Trajectories, Spacecraft Mission Analysis and Design, Linear Systems, Dynamics, GPS

    SKILLS

    ·           Proficient in Fortran 77 and 90, C

    ·           Basic programming skills: Matlab, C++, UNIX, UNIX scripts

    ·           Other: Windows, Microsoft Office, and ARCPad

    ·           Private Pilot

    PUBLICATIONS and CONFERENCE PRESENTATIONS

    ·           Harpold, Robert E.; Urban, Timothy J.; Schutz, Bob E. 2008, Sensitivity Analysis of ICESat Repeat Track Estimation Techniques for Detection of Elevation Changes in Polar Ice Sheets, Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract C31A-0472.

     

    ·           Harpold, Robert E.; Urban, Timothy J.; Webb, Charles E.; Schutz, Bob E. 2007, Assessment of ICESat Repeat Track Estimation Techniques for Polar Elevation Change Detection, Eos Trans. AGU 88(52), Fall Meet., Suppl., Abstract C23A-0943.

     

    ·           Harpold, Robert E.; Urban, Timothy J.; Schutz, Bob E. 2006, An Initial Crossover and Repeat Track Analysis of Ice Sheets Using ICESat Altimeter Data, Eos Trans. AGU 87(52), Fall Meet., Suppl., Abstract C41A-0316.

     

    ·           Gunter, Brian; Urban, T.; Riva, R.; Helsen, M.; Harpold, R.; Poole, S.; Nagel, P.; Schutz, B.; Tapley, B. A Comparison of coincident GRACE and ICESat data over Antarctica. Journal of Geodesy, doi:10.1007/s00190-009-0323-4. June 23, 2009.

     

    ·           Webb C.; Stauch J.; Harpold R.; Lorhammer K.; Schutz B.; Born G. (2007) ICESat off-nadir laser targeting: theory and practice. Adv Astronaut Sci 123: 155–174


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