Initial measurements of the angular velocity of walking humans using an active millimeter-wave correlation interferometer

Kojo S. Zilevu; Kelly L. Kammerman; Jeffrey A. Nanzer

doi:10.1117/12.2015849

31 May 2013 Initial measurements of the angular velocity of walking humans using an active millimeter-wave correlation interferometer

Kojo S. Zilevu, Kelly L. Kammerman, Jeffrey A. Nanzer

Author Affiliations +

Proceedings Volume 8714, Radar Sensor Technology XVII; 87141D (2013) https://doi.org/10.1117/12.2015849
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

The design of a 29.5 GHz experimental active interferometer for the measurement of the angular velocity of moving humans is presented in this paper, as well as initial measurements of walking humans. Measurement of the angular motion of moving objects is a desirable function in remote security sensing applications. Doppler radar sensors are able to measure the signature of moving humans based on micro-Doppler analysis; however, a person moving with little to no radial velocity produces negligible Doppler returns. Measurement of the angular movement of humans can be done with traditional radar techniques however the process involves either continuous tracking with narrow beamwidth or angle-of arrival estimation algorithms. Recently, the authors presented a new method of measuring the angular velocity of moving objects using interferometry. The method measures the angular velocity of an object without tracking or complex processing. The frequency shift imparted on the signal response is proportional to the angular velocity of the object as it passes through the interferometer beam pattern. The experimental system consists of a transmitter and two separate receivers with two widely spaced antennas. The received signals in each of the two channels are downconverted and digitized, and post-processed offline. Initial results of a walking person passing through the interferometer beam pattern are presented, which verify the expected operation of the receiver derived from the initial theory.

Citation Download Citation

Kojo S. Zilevu, Kojo S. Zilevu, Kelly L. Kammerman, Kelly L. Kammerman, Jeffrey A. Nanzer, Jeffrey A. Nanzer, "Initial measurements of the angular velocity of walking humans using an active millimeter-wave correlation interferometer", Proc. SPIE 8714, Radar Sensor Technology XVII, 87141D (31 May 2013); doi: 10.1117/12.2015849; https://doi.org/10.1117/12.2015849

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years