Active Hyperspectral Sensor Based on MEMS Fabry-Pérot Interferometer

Teemu Kääriäinen; Priit Jaanson; Aigar Vaigu; Rami Mannila; Albert Manninen

doi:10.3390/s19092192

Active Hyperspectral Sensor Based on MEMS Fabry-Pérot Interferometer

Teemu Kääriäinen
, Priit Jaanson
, Aigar Vaigu
, Rami Mannila
, Albert Manninen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

14 Citations (Scopus)

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	https://doi.org/10.3390/s19092192
Publication status	Published - 12 May 2019
MoE publication type	A1 Journal article-refereed

Funding

The research leading to these results has received funding from the European Commission and Business Finland under ECSEL joint undertaking programme (DENSE project, Grant Agreement 692449) and Business Finland Challenge Finland project Tehokas ja Turvallinen.

Keywords

hyperspectral
lidar
remote sensing
supercontinuum
FPI
OtaNano

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10.3390/s19092192

Cite this

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title = "Active Hyperspectral Sensor Based on MEMS Fabry-P{\'e}rot Interferometer",

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-P{\'e}rot 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.",

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AU - Vaigu, Aigar

AU - Mannila, Rami

AU - Manninen, Albert

PY - 2019/5/12

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KW - lidar

KW - remote sensing

KW - supercontinuum

KW - FPI

KW - OtaNano

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Active Hyperspectral Sensor Based on MEMS Fabry-Pérot Interferometer

Abstract

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Active Hyperspectral Sensor Based on MEMS Fabry-Pérot Interferometer

Abstract

Funding

Keywords

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OtaNano

Cite this