Abstract
An active hyperspectral sensor (AHS) was developed for target detection and classification applications. AHS measures light scattered from a target, illuminated by a broadband near-infrared supercontinuum (SC) light source. Spectral discrimination is based on a voltage-tunable MEMS Fabry-Pérot Interferometer (FPI). The broadband light is filtered by the FPI prior to transmitting, allowing for a high spectral-power density within the eye-safety limits. The approach also allows for a cost-efficient correction of the SC instability, employing a non-dispersive reference detector. A precision of 0.1% and long-term stability better than 0.5% were demonstrated in laboratory tests. The prototype was mounted on a car for field measurements. Several road types and objects were distinguished based on the spectral response of the sensor targeted in front of the car.
Original language | English |
---|---|
Article number | 2192 |
Journal | Sensors |
Volume | 19 |
Issue number | 9 |
DOIs | |
Publication status | Published - 12 May 2019 |
MoE publication type | A1 Journal article-refereed |
Keywords
- hyperspectral
- lidar
- remote sensing
- supercontinuum
- FPI
- OtaNano