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Performance Enhancement of Hybrid TDOA/AOA Using Multipath Delay Estimation

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Abstract

During the launch mission of a launch vehicle (LV), localization of the LV is very important for ensuring flight safety. Usually, active localization systems such as the ground tracking radar systems and onboard navigation systems of the LV are responsible for acquiring the relevant location information for localization. However, if, in addition to the existing localization methods, passive localization using ground telemetry stations can be implemented, the reliability of the flight safety control for the LV can be improved. Time of arrival (TOA), time difference of arrival (TDOA), and angle of arrival (AOA) are typical localization techniques used for an emitting target. In this paper, we examine passive TDOA/AOA localization that uses two ground telemetry stations, and propose a technique to improve its localization accuracy, based on second-order polynomial regression and the removal of the estimated multipath delays in the TDOA/AOA results. By comparing the results of our proposed technique with the measured data from an on-board GPS used in the 3rd Korea Space Launch Vehicle-1 (KSLV-1) mission, our study confirms that the localization accuracy has been improved.

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Acknowledgements

This research was supported by the Space Center Development Project (II) of the Korea Aerospace Research Institute (KARI). This research was also supported by the Ministry of Science and ICT (MSIT), Korea, under the Information Technology Research Center (ITRC) support program (IITP-2020-2016-0-00314) supervised by the Institute for Information & communications Technology Planning & Evaluation (IITP). Finally, this work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korea government (MSIT: Ministry of Science and ICT) (2018R1A2B6002255).

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Authors and Affiliations

  1. Department of Electronics and Computer Engineering, Chonnam National University, 300 Yongbongdong Bukgu, Gwangju, 500-757, Republic of Korea

    Soonho Kwon, Sangmi Moon, Dae Jin Kim, Hosung Park, Jin Young Kim & Intae Hwang

  2. NARO Space Center, Korea Aerospace Research Institute, 169-84, Gwahak-ro, Yuseong-Gu, Daejeon, 34133, Republic of Korea

    Soonho Kwon & Yongtae Choi

  3. Department of Information and Communications Engineering, Myongji University, San 38-2 Namdong, Cheoingu, Yongin, Gyeonggi-Do, 449-728, Republic of Korea

    Cheolwoo You

  4. School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR, 97331-3211, USA

    Huaping Liu

  5. Department of Electronics Engineering, Ewha Womans University, 11-1 Daehyundong, Seodaemungu, Seoul, 120-750, Republic of Korea

    Jeong-Ho Kim

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  1. Soonho Kwon
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  2. Yongtae Choi
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  3. Sangmi Moon
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  4. Cheolwoo You
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  5. Huaping Liu
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  6. Jeong-Ho Kim
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  7. Dae Jin Kim
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  8. Hosung Park
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  9. Jin Young Kim
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  10. Intae Hwang
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Correspondence to Intae Hwang.

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Kwon, S., Choi, Y., Moon, S. et al. Performance Enhancement of Hybrid TDOA/AOA Using Multipath Delay Estimation. Wireless Pers Commun 115, 2551–2568 (2020). https://doi.org/10.1007/s11277-020-07696-2

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