Data association and localization of multiple radio sources using DOAS and received signal power by a single moving passive sensor

Takeshi Amishima, Toshio Wakayama

Research output: Contribution to journalArticlepeer-review

Abstract

Our goal is to use a single passive moving sensor to determine the locations of multiple radio stations. The conventional method uses only direction-of-arrival (DOA) measurements, and its performance is poor when emitters are located closely in the lateral direction, even if they are not close in the range direction, or in the far field from the moving sensor, resulting in similar DOAs for several emitters. This paper proposes a new method that uses the power of the received signals as well as DOA. The received signal power is a function of the inverse of the squared distance between an emitter and the moving sensor. This has the advantage of providing additional information in the range direction; therefore, it can be used for data association as additional information when emitter ranges are di erent from each other. Simulations showed that the success rate of the conventional method is 73%, whereas that of the proposed method is 97%, an overall 24-percentage-point improvement. The localization error of the proposed method is also reduced to half that of the conventional method. We further investigated its performance with di erent emitter and sensor configurations. In all cases, the proposed method proved superior to the conventional method.

Original languageEnglish
Pages (from-to)1336-1345
Number of pages10
JournalIEICE Transactions on Communications
VolumeE101B
Issue number5
DOIs
Publication statusPublished - May 2018

Keywords

  • Association
  • Direction-of-arrival (DOA)
  • Localization
  • Received signal strength indicator (RSSI)

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