RoX (Reflectance bOX)

The RoX System

Rox is an automated field spectroscopy device capable of collecting unattended, continuous, long-term hyperspectral measurements.

It represents the evolution of prototypes such as Multiplexer Radiometer Irradiometer (MRI) [1]SFLUOR box [1] and SIF-System [2] developed from a collaboration between Jülich Research Center and the Remote Sensing of Environmental Dynamics Laboratory of the University Milano Bicocca. The basic routines of RoX are based on SPECY (Forschungszentrum Jülich, IBG-2: Plant Sciences).

RoX is designed for long term measurements of Solar radiance, reflected radiance and reflectance. Its robustness and flexibility make the RoX suitable for several application (e.g. vegetation monitoring, water quality, snow and ice properties).

The core of the system is the Flame spectrometer from Ocean Optics covering the Visible/Near Infrared region (300- 950 nm). Upward and downward channels of RoX allow to sequentially measure the solar irradiance and the reflected radiance from the canopy.

For more information about RoX Specifications download the product info.


Wavelength range 400—1000 nm
Spectral Sampling Interval (SSI) 0.34 nm
Spectral resolution (FWHM) 3 nm (other options available)
Signal to Noise Ratio (SNR) 200
Field Of View (FOV) Dual FOV. Upwelling radiance 25°. Downwelling radiance 180°
Signal Optimization Automatic adaption to varying light conditions
Dark current Accurate dark current determination at each measurement cycle
Manual acquisition Interface software for manual measurement and calibration
Automatic acquisition Fully autonomous measurement mode for unattended data acquisition
Quick measurements 10 seconds under bright sunshine 30 seconds in overcast conditions
Stability Reference system stability check and uncertainty estimates
Simultaneous metadata Spectrometer temperature, Outside temperature, GPS position, GPS time
Data storage SD card up to 64 GB (12 months of measurements)
Case Robust and Waterproof housing based on the 1510 Pelicase
Dimension Small form factor (30 x 25 x 13 cm)
Power supply 12 Volt. From battery and solar panels
Power consumption 800 mAh
Energy saver Day/night switch for energy saving
Dust protection Additional dust protection for Cosine Receptors
Power supply Solar panel and battery
Fiber optics Flexible length of fiber optics according to user needs
Field use Backpack option including small battery packs

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