Harmonic Phase Response of Nonlinear Radar Targets

Abstract

One of the latest challenges being investigated by the US Army Research Laboratory's (ARL) Electronics and Radio Frequency (E&RF) Division is the development of a radar system that can accurately detect and range an electronically nonlinear target, such as a detonator of an improvised explosive device (IED). Previous nonlinear radar systems detect targets via transmission of a single frequency omega, stepping (incrementally increasing) this frequency through a wide bandwidth, and then listening for a response of the 2nd harmonic 2 omega; however, the phase information that this harmonic contains and its relationship to target distance has been largely assumed and unconfirmed. Our most recent experimental tests, both wired and wireless, have confirmed that this harmonic phase response is constant versus frequency at the target. Using inverse Fourier transforms, the range of an electronic nonlinear target can be determined from that phase.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2015
Accession Number
ADA624701

Entities

People

  • Gregory J. Mazzaro
  • Kelly D. Sherbondy
  • Ram M Narayanan
  • Sean F. Mcgowan

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Amplifiers
  • Bandwidth
  • Circuit Boards
  • Circuits
  • Detection
  • Electric Fields
  • Electrical Engineering
  • Engineering
  • Experimental Design
  • Explosive Devices
  • Filters
  • Frequency
  • Improvised Explosive Devices
  • Military Research
  • Printed Circuits
  • Radar
  • Transmitters

Fields of Study

  • Physics

Readers

  • Approximation Theory.
  • Microwave Engineering.
  • Munitions and Ordnance Engineering

Technology Areas

  • Microelectronics