ORAU
Synergy between Global Navigation Satellite System and Very Long Baseline Interf
ORAU, Greenbelt, Maryland, us, 20771
Synergy between Global Navigation Satellite System and Very Long Baseline Interferometry space geodesy techniques.
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Synergy between Global Navigation Satellite System and Very Long Baseline Interferometry space geodesy techniques.
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ORAU The NASA Postdoctoral Program (NPP) offers unique research opportunities to highly-talented scientists to engage in ongoing NASA research projects at a NASA Center, NASA Headquarters, or at a NASA-affiliated research institute. These one- to three-year fellowships are competitive and are designed to advance NASA’s missions in space science, Earth science, aeronautics, space operations, exploration systems, and astrobiology. Description:
This opportunity is closed to applicants who are Senior Fellows (5-years or more past PhD). Historically, data analysis of two space geodesy techniques, very long baseline interferometry (VLBI) and global navigation satellite systems (GNSS) developed independently. Recent advances in space geodesy instrumentation and data analysis allowed to blur the line between these two techniques. It was demonstrated that it is feasible (1) to observe GNSS satellites with VLBI, (2) to use a GNSS receiver as an element of a VLBI array and (3) to determine pseudo-ranges from voltage data of GNSS satellites recorded with a radio telescope. These capabilities have a potential to develop VLBI+GNSS technique that mitigates weakness of individual techniques. The focus of the proposed research is to develop methods of data analysis of an emerging VLBI+GNSS technique, identify the area of the strengths and weaknesses of the new technique, to optimize observing programs, to process data, and present evidence that substantiate claims about strengths and weaknesses. NASA heavily contributes to the on-going international geodetic VLBI observing program for determination of terrestrial coordinate system, celestial coordinate system, and determination of the Earth orientation parameters with the highest accuracy. The agency is interested in mitigation of systematic errors in results of these observations and in investigation of biases between VLBI and GNSS results. Field of Science:
Earth Science Advisors:
Leonid Petrov Leonid.Petrov@nasa.gov (301) 614-5611 Eligibility: U.S. Citizens; U.S. Lawful Permanent Residents (LPR); Foreign Nationals eligible for an Exchange Visitor J-1 visa status; and, Applicants for LPR, asylees, or refugees in the U.S. at the time of application with 1) a valid EAD card and 2) I-485 or I-589 forms in pending status Qualifications:
Applicants with a hand-on experience in developing software for processing GNSS or VLBI data will receive favorable consideration. The proposed research involves heavy computation under Linux environment. The successful applicant knows Fortran or C and is willing to master his or her skill in modern Fortran programming language. Application Deadline:
11/1/2025 6:00:59 PM Eastern Time Zone How To Apply:
All applications must be submitted in Zintellect. Please visit the NASA Postdoctoral Program website for application instructions and requirements:
How to Apply | NASA Postdoctoral Program Equal Employment Opportunity:
NASA is an equal opportunity employer.
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Join to apply for the
Synergy between Global Navigation Satellite System and Very Long Baseline Interferometry space geodesy techniques.
role at
ORAU The NASA Postdoctoral Program (NPP) offers unique research opportunities to highly-talented scientists to engage in ongoing NASA research projects at a NASA Center, NASA Headquarters, or at a NASA-affiliated research institute. These one- to three-year fellowships are competitive and are designed to advance NASA’s missions in space science, Earth science, aeronautics, space operations, exploration systems, and astrobiology. Description:
This opportunity is closed to applicants who are Senior Fellows (5-years or more past PhD). Historically, data analysis of two space geodesy techniques, very long baseline interferometry (VLBI) and global navigation satellite systems (GNSS) developed independently. Recent advances in space geodesy instrumentation and data analysis allowed to blur the line between these two techniques. It was demonstrated that it is feasible (1) to observe GNSS satellites with VLBI, (2) to use a GNSS receiver as an element of a VLBI array and (3) to determine pseudo-ranges from voltage data of GNSS satellites recorded with a radio telescope. These capabilities have a potential to develop VLBI+GNSS technique that mitigates weakness of individual techniques. The focus of the proposed research is to develop methods of data analysis of an emerging VLBI+GNSS technique, identify the area of the strengths and weaknesses of the new technique, to optimize observing programs, to process data, and present evidence that substantiate claims about strengths and weaknesses. NASA heavily contributes to the on-going international geodetic VLBI observing program for determination of terrestrial coordinate system, celestial coordinate system, and determination of the Earth orientation parameters with the highest accuracy. The agency is interested in mitigation of systematic errors in results of these observations and in investigation of biases between VLBI and GNSS results. Field of Science:
Earth Science Advisors:
Leonid Petrov Leonid.Petrov@nasa.gov (301) 614-5611 Eligibility: U.S. Citizens; U.S. Lawful Permanent Residents (LPR); Foreign Nationals eligible for an Exchange Visitor J-1 visa status; and, Applicants for LPR, asylees, or refugees in the U.S. at the time of application with 1) a valid EAD card and 2) I-485 or I-589 forms in pending status Qualifications:
Applicants with a hand-on experience in developing software for processing GNSS or VLBI data will receive favorable consideration. The proposed research involves heavy computation under Linux environment. The successful applicant knows Fortran or C and is willing to master his or her skill in modern Fortran programming language. Application Deadline:
11/1/2025 6:00:59 PM Eastern Time Zone How To Apply:
All applications must be submitted in Zintellect. Please visit the NASA Postdoctoral Program website for application instructions and requirements:
How to Apply | NASA Postdoctoral Program Equal Employment Opportunity:
NASA is an equal opportunity employer.
#J-18808-Ljbffr