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NOX

Near Infrared Reflectance Instrument

Description

The NOX spectrometer represents the evolution of prototype instruments such as the Multiplexer Radiometer Irradiometer (MRI), SFLUOR box and SIF-System 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 the NOX are based on SPECY (Forschungszentrum Jülich, IBG-2: Plant Sciences).

The NOX is a hyperspectral analyser specifically designed to measure radiance and reflectance under natural light conditions. The design is optimized to achieve maximum efficiency in terms of signal to noise ratio, spectral resolution and swift acquisition time. Different combinations of spectrometers can be selected (e.g. SR4, FLAME, QEpro for the visible range. FLAME-NIR or NIRquest for the NIR range; all from Ocean Optics). Upward and downward channels of the NoX allow measurement of solar irradiance (making use of the JB COS cosine corrector) and the reflected radiance from the canopy. To maintain a stable level of dark current, the spectrometers are embedded in a temperature-controlled housing. Signal-to-noise is maximized dues to accurate automatic optimization of the signal inboth channels and high performance optical light throughput. 

Near Infrared Reflectance instrument
top of NOX product
front of NOX product

Specifications

OPTIC SPEC 1

  • Wavelength range

    ~ 350-1100 nm

  • Spectral Sampling Interval (SSI)

    ~ 0.7 nm

  • Spectral resolution (FWHM)

    ~ 3 nm

  • Signal to Noise Ratio (SNR)

    ~ 1000

  • Field Of View (FOV)

    Dual FOV. Upwelling radiance 25°. Downwelling radiance 180°

OPTIC SPEC 2

  • Wavelength range

    ~ 900-1650 nm

  • Spectral Sampling Interval (SSI)

    ~ 1.5 nm

  • Spectral resolution (FWHM)

    ~ 3 nm

  • Field Of View (FOV)

    Dual FOV. Upwelling radiance 25°. Downwelling radiance 180°

OPERATIONAL

  • 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

    20 seconds under bright sunshine 60 seconds in overcast condition

  • Stability

    Reference system stability check and uncertainty estimates

  • Simultaneous metadata

    Spectrometer temperature, Outside temperature, GPS position, GPS time

  • Data Display

    Live assessment of the systems status

  • Data storage

    SD card up to 32 GB (12 months of measurements)

  • Case

    Robust and Waterproof housing based on the 1510 Pelicase

  • Dimension

    Small form factor (50 × 30 × 20 cm)

  • Power supply

    12 Volt. From battery or solar panels

  • Power consumption

    Average consumption of 60 Watt. (20/100 Watt, cooling on/off)

  • Energy saver

    Day/night switch for energy saving

  • Interfaces

    RS232 via cable and wireless – SDI-12

OPTIONAL

  • Dust Protection

    Additional dust protection for Cosine Receptors

  • Fiber optics

    Flexible length of fiber optics according to user needs

  • Communication

    Addon for LAN/WLAN/Mobile Network Remote access

FAQ

How do I process NOX data?

The NOX saves raw data. Conversion into radiance data and computation of reflectance and a variety of vegetation indices is done using an open source R package. A graphical user interface makes data manipulation easy allowing years of data to be processed with a few clicks.

How can NOX be integrated for remote access and live data streaming?

The basic NOX is equipped with a USB interface to stream data directly to a connected computer. The NOX can also pass a sub selection of variables (VIs and vital data) via SDI-12. An optional embedded PC, if connected to the internet (LAN, WLAN, mobile network) allows daily streaming of the full data set.

What is the delivery time of the instrument?

Delivery time ranges from one month to a maximum of three months

Can Qubit Systems provide assistance for instrument installation?

Yes. Just get in touch with Qubit Systems to request installation services.

NOX product illustration

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