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Design of Chirp Waveforms for Multiple-access Ultrasonic Indoor Positioning

Journal Article


Abstract


  • In ultrasonic positioning systems (UPSs) chirp waveforms have attracted much attention due to its high range resolution. However, the multiple-access schemes for chirp-based UPS are limited. In its application to multiple-access ultrasonic positioning, effective waveform diversity design is a prerequisite. In a multiple-access UPS, each transmitter should transmit a unique waveform with impulse-like auto-correlation and relatively flat cross-correlations to the waveforms transmitted by other transmitters. Proposed in this paper is a methodology whereby multiple transmitters can transmit chirp signals simultaneously. The chirp waveforms are constructed by concatenating a number of linear sub-chirps of the same durations and bandwidths but different starting and stopping frequencies. This process is optimized by selecting sequences with impulse-like auto-correlations and relatively flat cross-correlations. Firstly, the efficiency of the proposed methodology is evaluated by several metrics and then, in an indoor environment, through simulations and experiments for ultrasonic positioning.

Authors


  •   Khyam, M (external author)
  •   Noor-A-Rahim, Md (external author)
  •   Li, Xinde (external author)
  •   Ritz, Christian H.
  •   Guan, Yong L. (external author)
  •   Ge, Shuzhi S. (external author)

Publication Date


  • 2018

Citation


  • M. Omar. Khyam, M. Noor-A-Rahim, X. Li, C. Ritz, Y. Liang. Guan & S. Sam. Ge, "Design of Chirp Waveforms for Multiple-access Ultrasonic Indoor Positioning," IEEE Sensors Journal, vol. 18, (15) pp. 6375-6390, 2018.

Scopus Eid


  • 2-s2.0-85048507677

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/1581

Number Of Pages


  • 15

Start Page


  • 6375

End Page


  • 6390

Volume


  • 18

Issue


  • 15

Place Of Publication


  • United States

Abstract


  • In ultrasonic positioning systems (UPSs) chirp waveforms have attracted much attention due to its high range resolution. However, the multiple-access schemes for chirp-based UPS are limited. In its application to multiple-access ultrasonic positioning, effective waveform diversity design is a prerequisite. In a multiple-access UPS, each transmitter should transmit a unique waveform with impulse-like auto-correlation and relatively flat cross-correlations to the waveforms transmitted by other transmitters. Proposed in this paper is a methodology whereby multiple transmitters can transmit chirp signals simultaneously. The chirp waveforms are constructed by concatenating a number of linear sub-chirps of the same durations and bandwidths but different starting and stopping frequencies. This process is optimized by selecting sequences with impulse-like auto-correlations and relatively flat cross-correlations. Firstly, the efficiency of the proposed methodology is evaluated by several metrics and then, in an indoor environment, through simulations and experiments for ultrasonic positioning.

Authors


  •   Khyam, M (external author)
  •   Noor-A-Rahim, Md (external author)
  •   Li, Xinde (external author)
  •   Ritz, Christian H.
  •   Guan, Yong L. (external author)
  •   Ge, Shuzhi S. (external author)

Publication Date


  • 2018

Citation


  • M. Omar. Khyam, M. Noor-A-Rahim, X. Li, C. Ritz, Y. Liang. Guan & S. Sam. Ge, "Design of Chirp Waveforms for Multiple-access Ultrasonic Indoor Positioning," IEEE Sensors Journal, vol. 18, (15) pp. 6375-6390, 2018.

Scopus Eid


  • 2-s2.0-85048507677

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/1581

Number Of Pages


  • 15

Start Page


  • 6375

End Page


  • 6390

Volume


  • 18

Issue


  • 15

Place Of Publication


  • United States