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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.11
- 수록면
- 1,028 - 1,037 (10page)
- DOI
- 10.5302/J.ICROS.2020.20.0134
이용수
초록· 키워드
오류제보하기
In this paper, we propose a novel strobe pulse to mitigate the multipath effect of MBOC (6,1,4/33) signal and analyze its performance. By additionally modulating a passband Direct Sequence/Spread Spectrum (DS/SS) signal with a Binary Offset Carrier (BOC) sub-carrier, the signal band can be moved to a desired band, thereby increasing frequency efficiency. In addition, the correlation characteristics of the correct code synchronization point are improved, so that the multipath effect can be reduced to compare with the existing Binary Phase Shift Keying (BPSK) modulated signal. However, the multipath effect is still one of the major performance limitations of the Global Navigation Satellite Systems (GNSSs). A conventional scheme to mitigate multipath effects of GNSS is the Strobe pulse technique. In this paper, we design a new strobe pulse that can effectively mitigate the multipath effects of MBOC (6,1,4/33) signals, and multipath mitigation in the 2-Ray model, a representative channel environment to assess the multipath mitigation performance by computer-based simulation. In order to compare the performance of the proposed new strobe pulse, the W2 pulse scheme with similar implementation complexity is considered. The W2 pulse technique is the one of the Strobe pulse technique for BOC signal. Based on the output of the discriminator in multipath free environment, the pull-in range of the W2 pulse technique is about 0.2 chips, whereas the proposed scheme is about 0.6 chips, which is about 3 times wider. And the false-lock point of the proposed scheme is less than about 20% to compare the W2 scheme. In the same environment, the multipath error envelope of the W2 and the proposed schemes is shown, and both techniques are affected only by the closed-in multipath signal. Among them, the proposed scheme has significantly lower multipath errors due to the closed-in multipath signal compared to the W2 technique, and the maximum value of the proposed scheme based on the running average of the multipath errors is about 32% compared to the W2 scheme.
목차
Abstract
I. 서론
II. MBOC 신호
III. 다중경로 영향
IV. 제안한 새로운 Strobe 펄스와 성능 분석
V. 결론
REFERENCES
참고문헌 (18)
참고문헌 신청
European Global Navigation Satellite Systems Agency, GSA GNSS Market Report: GNSS and New space, Issue 6, Office of the European Union, Luxembourg, 2019.
R. T. Ioannides, T. Pany, and G. Gibbons, “Known vulnerabilities of global navigation satellite systems, status, and potential mitigation techniques,” Proceedings of the IEEE, vol. 104, no. 6, pp. 1174-1194, Jun. 2016.
A. Broumandan, S. Kennedy, and J. Schleppe, “Nobody’s fool: Spoofing detection in a high-precision receiver,” InsideGNSS, vol. 15, no. 4, pp. 36-43, July/Aug. 2020.
E. D. Kaplan and C. J. Hegarty, Understanding GPS/GNSS: Principles and Applications, 3rd Edition, Artech House, Norwood, England, 2017.
S. Yoo, “A study on detection probability of asymmetric ratio metric for GNSS multipath detection,” Journal of Institute of Control, Robotics and Systems (in Korean), vol. 24, no. 7, pp. 661-667, Jul. 2018.
R. T. Ioannides, T. Pany, and G. Gibbons, “Known vulnerabilities of global navigation satellite systems, status, and potential mitigation techniques,” Proceedings of the IEEE, vol. 104, no. 6, pp. 1174-1194, Jun. 2016.
A. Broumandan, S. Kennedy, and J. Schleppe, “Nobody’s fool: Spoofing detection in a high-precision receiver,” InsideGNSS, vol. 15, no. 4, pp. 36-43, July/Aug. 2020.
E. D. Kaplan and C. J. Hegarty, Understanding GPS/GNSS: Principles and Applications, 3rd Edition, Artech House, Norwood, England, 2017.
S. Yoo, “A study on detection probability of asymmetric ratio metric for GNSS multipath detection,” Journal of Institute of Control, Robotics and Systems (in Korean), vol. 24, no. 7, pp. 661-667, Jul. 2018.
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