Mr. Stefan Gmehling Profile

Stefan Gmehling

at Friedrich-Alexander-Univ Erlangen-Nürnberg

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 12 September 2021 Presentation + Paper

Close range ISAR imaging with target velocity determination for security screening applications

Konstantin Root, Ingrid Ullmann, Stefan Gmehling, Martin Vossiek

Proceedings Volume 11868, 118680M (2021) https://doi.org/10.1117/12.2602072

KEYWORDS: Radar, Antennas, Velocity measurements, Synthetic aperture radar, Image resolution, Scanners, Radar imaging, Imaging arrays

Read Abstract +

State-of-the-art personnel screening systems reconstruct images by using multiple-input-multiple-output (MIMO) radars, which require a large number of transmit and receive channels along a two-dimensional array. We propose a novel concept for security screening which does not require the person to stand still and only employs a one- dimensional array: Our approach is built on the use of inverse synthetic aperture radar (ISAR) imaging based on a vertical line array. This means that the moving person inversely samples a synthetic aperture along the horizontal dimension. In order to reconstruct an image by the ISAR principle, the test subject's velocity relative to the radar aperture needs to be known. Therefore, we employ an additional radar module which measures the person's velocity, assuming that the person is moving parallel to the aperture plane. Experiments with a mannequin carrying threat objects were performed. The mannequin was moved on a traversing rail with 1 m/s and its velocity was estimated by a commercial radar module emitting a chirp sequence signal. The estimation was in very good accordance with the rail's real moving speed. With the determined target velocity an image was reconstructed along the horizontal direction by the ISAR principle. Along the vertical direction, the focusing was performed using a MIMO line array of 45 transmitter and 24 receiver channels with a total height of 60 cm. That way, and by employing broadband signals (70 GHz - 80 GHz), three-dimensional high-resolution images were obtainable. Promising results were obtained from the measurements and different threat objects were made visible.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

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:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years