16. An Introduction to NLOS Identification and Localization

  1. Seyed A. (Reza) Zekavat1 and
  2. R. Michael Buehrer2
  1. Wenjie Xu,
  2. Zhonghai Wang and
  3. Seyed A. (Reza) Zekavat

Published Online: 6 SEP 2011

DOI: 10.1002/9781118104750.ch16

Handbook of Position Location: Theory, Practice, and Advances

Handbook of Position Location: Theory, Practice, and Advances

How to Cite

Xu, W., Wang, Z. and Zekavat, S. A. (2011) An Introduction to NLOS Identification and Localization, in Handbook of Position Location: Theory, Practice, and Advances (eds S. A. (. Zekavat and R. M. Buehrer), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781118104750.ch16

Editor Information

  1. 1

    Michigan Technological University, Houghton, MI, USA

  2. 2

    Virginia Tech, Blacksburg, VA, USA

Author Information

  1. Michigan Technological University, Houghton, MI, USA

Publication History

  1. Published Online: 6 SEP 2011
  2. Published Print: 16 SEP 2011

ISBN Information

Print ISBN: 9780470943427

Online ISBN: 9781118104750

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Keywords:

  • direction-of-arrival (DOA) measurement;
  • non-line-of-sight (NLOS) identification techniques;
  • non-line-of-sight (NLOS) localization techniques;
  • received signal strength indicator (RSSI);
  • time-of-arrival (TOA) measurement

Summary

This chapter reviews many non-line-of-sight (NLOS) identification and localization techniques. NLOS identification techniques can be categorized into cooperative and noncooperative. Cooperative localization techniques use multiple nodes to identify NLOS measurements. Noncooperative NLOS identification is based on single-node channel measurement. These techniques are based on (1) the range statistics; (2) channel characteristics, such as received signal power, Rician K-factor and features extracted from the power delay profile; and (3) the consistency between the time-of-arrival (TOA) measurement and path loss for line of sight (LOS)/NLOS, and the consistency between the direction of departure (DOD) and direction-of-arrival (DOA). The NLOS localization techniques can be cooperative and noncooperative. These techniques are categorized into (1) NLOS localization using TOA, DOA measurements, and the environment map; and (2) localization using the measurements from reflectors. The chapter discusses the advantages and disadvantages of these techniques and the complexity and performance of each technique.

Controlled Vocabulary Terms

direction-of-arrival estimation; identification technology; position measurement; Time of arrival estimation