False image suppression in two-dimensional shape estimates of a walking human using multiple ultra-wideband Doppler radar interferometers

Hiroki Yamazaki, Takuya Sakamoto, Hirofumi Taki, Toru Sato

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Microwave systems have a number of promising applications in surveillance and monitoring systems. The main advantage of microwave systems is their ability to detect targets at distance under adverse conditions such as dim, smoky, and humid environments. Specifically, the wide bandwidth of ultra-wideband radar enables high range resolution. In a previous study, we proposed an accurate shape estimation algorithm for multiple targets using multiple ultra-wideband Doppler interferometers. However, this algorithm produces false image artifacts under conditions with severe interference. The present paper proposes a technique to suppress such false images by detecting inconsistent combinations of the radial velocity and time derivative of image positions. We study the performance of the proposed method through numerical simulations of a two-dimensional section of a moving human body, and demonstrate the remarkable performance of the proposed method in suppressing false image artifacts in many scenarios.

Original languageEnglish
Pages (from-to)134-142
Number of pages9
JournalIEICE Transactions on Communications
VolumeE99B
Issue number1
DOIs
Publication statusPublished - 2016 Jan

Keywords

  • Doppler radar
  • False image rejection
  • Multiple interferometers
  • Shape estimation
  • Ultra-wideband radar
  • Walking human

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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