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Investigation of Advanced Spaceborne GNSS-R Techniques Using the SMAP Satellite

Buchanan, Matthew L
http://rave.ohiolink.edu/etdc/view?acc_num=osu1565890319858178

Abstract Details

2019, Doctor of Philosophy, Ohio State University, Electrical and Computer Engineering.
Global Navigation Satellite System Reflectometry (GNSS-R) is a remote sensing technique that utilizes GNSS signals reflected off of the Earth's surface to make geophysical measurements. Potential applications include the measurement of ocean surface wind speed, soil moisture, sea ice extent, and more. Since the existing GNSS satellites serve as transmitters in this passive, bistatic radar system, the reflectometer instrument can be made less expensive, less complex, and smaller than a traditional monostatic radar. Using a GNSS-R receiver on a spaceborne platform offers the ability to perform remote sensing with potentially global coverage. To date, almost all spaceborne GNSS-R instruments have utilized LHCP receive antennas with peak gains of 14 dBi or less, which limits the capabilities of these systems. Recently, the radar instrument onboard NASA's Soil Moisture Active Passive (SMAP) satellite has been tuned to receive GPS frequencies, which provides a unique opportunity for advanced spaceborne GNSS-R research. Equipped with a dual-polarized antenna with a peak gain of 36 dBi, SMAP can observe phenomena not otherwise available to existing instruments. In this work, raw signals collected by the SMAP satellite are processed in order to experimentally evaluate GNSS-R polarimetry, carrier phase characteristics, and off-specular scattering. This provides insight into the feasibility and requirements for implementing these novel, advanced GNSS-R capabilities and may serve to influence the design and operational considerations for future spaceborne GNSS-R missions.
Joel Johnson, PhD (Advisor)
Andrew O'Brien, PhD (Committee Member)
Inder Gupta, PhD (Committee Member)
Robert Burkholder, PhD (Committee Member)
Graeme Smith, PhD (Committee Member)
205 p.
Electrical Engineering; Electromagnetics
GNSS-R; GNSS-Reflectometry; remote sensing; satellite; SMAP; reflectometry

Recommended Citations

Citations

  • Buchanan, M. L. (2019). Investigation of Advanced Spaceborne GNSS-R Techniques Using the SMAP Satellite [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1565890319858178

    APA Style (7th edition)

  • Buchanan, Matthew. Investigation of Advanced Spaceborne GNSS-R Techniques Using the SMAP Satellite. 2019. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1565890319858178.

    MLA Style (8th edition)

  • Buchanan, Matthew. "Investigation of Advanced Spaceborne GNSS-R Techniques Using the SMAP Satellite." Doctoral dissertation, Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1565890319858178

    Chicago Manual of Style (17th edition)

osu1565890319858178
295
© 2019, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.