Hyperspectral imaging in short wave infrared wavelengths is typically limited to highly illuminated conditions, which is a limitation for security and defense applications. A hyperspectral imager capable of operating in dark conditions would have many uses cases in, for example drone imaging and imaging in front of vehicles for target recognition. In this work, we demonstrate an active shortwave infrared pushbroom imager for operation regardless of ambient lighting conditions. The imager is capable of capturing 1000 hyperspectral data lines per second by using a combination of pulsed broadly tuneable supercontinuum light source and 1D monochrome camera sensor. By using short pulses of 2.6ns, short sensor exposure times can be used and thus eliminating the effect of ambient light. We demonstrate imaging from 6 m distance. Further development and potential are discussed.
There is a need for sensor technologies capable of identifying illegal border crossings through foliage. In this work, we study the use of a novel active hyperspectral sensor for remote identification of persons and vehicles through foliage. The AHS sensor is based on a continuously tunable near-infrared supercontinuum light source and a microelectromechanical Fabry-Pérot interferometer for transmission band selection. Real-time spectral detection algorithms are used to identify the targets based on the spectral content of the back-scattered light. Preliminary results are presented from both in-lab and outdoors.
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.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
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.