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Enhanced Distance Measuring Equipment Data Broadcast Design, Analysis, Implementation, and Flight-Test Validation

Naab-Levy, Adam O.
http://orcid.org/0000-0003-3507-5128
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1449158180

Abstract Details

2015, Master of Science (MS), Ohio University, Electrical Engineering (Engineering and Technology).
Position, Navigation, and Timing (PNT) are critical parameters that are necessary for efficient and safe air travel. In the future, aviation operations will require more advanced PNT that demands higher accuracy while also maintaining an onboard monitoring capability, which is already required for Global Positioning System (GPS) and Space Based Augmentation System (SBAS) operations. These requirements can currently only be met by GPS, and likely other Global Navigation Satellite Systems (GNSSs) in the future, which poses a threat to aviation if a loss of GNSS occurs. Consequently, alternative systems, like Enhanced Distance Measuring Equipment (eDME), have been proposed to mitigate this threat. eDME is a candidate alternative PNT system that exploits the underlying structure of the legacy DME signal to improve system accuracy, integrity, and robustness. Specifically, eDME enhancements are based on the ability to track the underlying carrier that the legacy DME pulse-pairs are modulated onto and the transmission of a predetermined Beat signal that is comprised of precisely transmitted pulse-pairs. Data broadcast, which will be the focus of this thesis, can then be achieved by leveraging the information delivery potential intrinsic to the DME carrier phase and eDME Beat signal. Specifically, this thesis will design and analyze data requirements, noise and interference mitigation techniques, legacy compliant modulation schemes, impact of data on legacy capacity, and forward error correction (FEC) techniques. A prototype data broadcast system is then implemented and validated by flight-test campaigns and it is shown that data can be reliably transmitted across the DME channel by using differential phase-shift-keying in conjunction with Turbo codes or Low-Density Parity Check (LDPC) FEC.
Wouter Pelgrum (Advisor)
Frank van Graas (Committee Member)
Maarten Uijt de Haag (Committee Member)
Martin Mohlenkamp (Committee Member)
Jeffrey Dill (Other)
212 p.
Aerospace Engineering; Electrical Engineering
eDME; Distance Measuring Equipment; DME; Position, Navigation, and Timing; PNT; Forward Error Correction; FEC; Duo-Binary Turbo Codes; DBTC; LDPC; Pulse-Pair Position Modulation; PPPM; Phase Shift-Keying; PSK; DPSK; Impulsive Interference; Flight-test; Digital Comm

Recommended Citations

Citations

  • Naab-Levy, A. O. (2015). Enhanced Distance Measuring Equipment Data Broadcast Design, Analysis, Implementation, and Flight-Test Validation [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1449158180

    APA Style (7th edition)

  • Naab-Levy, Adam. Enhanced Distance Measuring Equipment Data Broadcast Design, Analysis, Implementation, and Flight-Test Validation. 2015. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1449158180.

    MLA Style (8th edition)

  • Naab-Levy, Adam. "Enhanced Distance Measuring Equipment Data Broadcast Design, Analysis, Implementation, and Flight-Test Validation." Master's thesis, Ohio University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1449158180

    Chicago Manual of Style (17th edition)

ohiou1449158180
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This open access ETD is published by Ohio University and OhioLINK.