HySpex

High resolution, high speed hyperspectral camera

HySpex is a hyperspectral camera system developed by the Norwegian company NEO (Norsk Elektro Optikk A/S). The system consists of two imaging spectrometers whose data are combined during postprocessing to a single dataset. It samples the wavelength range from 416 to 2500 nm in up to 316 spectral channels. A precise navigation system (iMar, Germany) provides position and attitude data for georeferencing and correction of geometric errors caused by angular movements of the airplane.

The system arrived at DLR Oberpfaffenhofen on 13 December 2011. In 2012, it was prepared for operational usage and extensively tested (airworthiness certification, laboratory characterisation, set-up of the automatic data processing chain, first flights). Operational usage on board of DLR's research aircrafts is planned from 2013 on.

Key parameters

HySpex camera	VNIR-1600	SWIR-320m-e
Detector	Si CCD-Array	HgCdTe Array
Range (nm)	416-992	968-2498
FOV (°)	16.6/33.2(*)	13.2/26.4(*)
IFOV (mrad)	0.19/0.38(*)	0.75/1.50(*)
Channels	160	256
Sampling interval (nm)	3.7	6.0
Pixels	1600	320
Dynamic range (bit)	12	14
NER (mW m^-2 nm^-1 sr^-1)	VIS: 0.05-0.1	0.01-0.02
	NIR: 0.1-0.6
Smile (pixel)	< 0.1	< 0.1
Keystone (pixel)	< 0.1	< 0.1
Max. frame rate (Hz)	135	99
Pixel size at 1000 m altitude (m)	across track: 0.19	0.75
	along track: 0.38

^(*)The field of view can be extended by a factor of two using a field-of-view-expander.

Last changes: 30 Oct 2012