Remote respiration sensing using millimeter-wave radar systems

POSTER

Abstract

Two radar systems capable of detecting directional displacement were used to measure the movement of a subject's chest wall due to respiration. The first system uses a Michelson interferometer setup and a binary-frequency-shifted signal on a 120 GHz carrier to obtain I (in-phase) and Q (quadrature) signals. The relative phase between I and Q is used to determine the displacement. The second system is a heterodyne transceiver operating near 240 GHz, which returns the I and Q signals directly through IF (intermediate frequency) signal processing. Both systems have been able to determine respiration rates from data taken facing a subject head-on. We will present an overview of both systems along with representative data.

Authors

  • Erik Bryan

    Wright State University

  • Charles Phelps

    Wright State University

  • Kyung Yu

    University of Akron, Youngstown State University, Shady Side Academy, Westminster College, Nitronex Corporation, Durham, NC, AFRL,Wright-Patterson AFB, Ohio, University of Michigan, Ann Arbor, Department of Physics, The Ohio State University, Lunghwa University of Science and Technology, Eastern Michigan University, Wright State University, Michigan State University, Texas A\&M University and Princeton University, Joint Institute for Nuclear Research (Dubna), Naval Research Laboratory, ManTech SRS Technologies, Inc., Ecopulse, Inc., Army Research Laboratory, University of Surrey, Kettering University, Flint, MI, Pennsylvania State University, University of TN

  • Anu Grover

    Wright State University

  • Izaak Kemp

    Wright State University

  • Douglas T. Petkie

    Wright State University