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ASD - FieldSpec - 4 Hi-Res NG Spectroradiometer

Enhanced spectral resolution to support accurate analysis of the next generation of hyperspectral sensors.

The enhanced 6 nm SWIR spectral resolution of the FieldSpec 4 Hi-Res NG spectroradiometer provides both the sampling interval (bandwidth) and the spectral resolution to support accurate calibration and image classification analysis with the next generation high spectral resolution hyperspectral sensors.

Higher resolution hyperspectral sensors yield greater precision for remote sensing classification applications, producing more information from every pixel generated in an image than ever before. To help maximize the full potential of these next generation sensors, measurements from ground based instrumentation need to meet or exceed the sensor’s spectral resolution. In the absence of this resolution equality, data is interpolated during post processing and vital spectral information can be smoothed and lost.


The enhanced spectral resolution of the FieldSpec 4 Hi-Res NG spectroradiometer has been designed to meet the rigorous demands of the next generation hyperspectral imaging systems such as AVRIS-NG and HySpex ODIN-1024. In addition to superior spectral resolution the FieldSpec 4 Hi-Res NG, like all ASD spectroradiometers, incorporates graded index InGaAs photodiode SWIR detectors to provide the smallest available spectral sampling interval in a field portable device with 1,875 measured wavelengths over the full 350 to 2,500 nm spectral range, ensuring detection of even the most subtle spectral features.

Technical Specifications

Spectral Range 350-2500 nm
Spectral Resolution 3 nm @ 700 nm
6 nm @ 1400/2100 nm
Spectral Sampling (bandwidth) 1.4 nm @ 350-1000 nm
1.1 nm @ 1001-2500 nm
Scanning Time 100 milliseconds
Wavelength reproducibility 0.1 nm
Wavelength accuracy 0.5 nm
Maximum radiance VNIR 2X Solar, SWIR 10X Solar
Channels 2151
Weight 5.44 kg (12 lbs)

Key Features

  • Higher resolution hyperspectral sensors
  • Full-range detection capacity (350 nm – 2500 nm) provides uniform Vis/NIR/SWIR
  • Faster integration speed allows more measurements in a limited solar collection time window.
  • Graded index InGaAs photodiode SWIR detectors ensure seamless measurements in the 1001 nm – 2500 nm spectral range
  • Provide the smallest available spectral sampling interval (bandwidth) in a field portable device.
  • Seamless measurements in the 1001 nm – 2500 nm spectral range
  • Superior signal throughput and greatly improved radiometric calibration accuracy over signal-to-noise
  • Long-range wireless increases collection coverage potential from a stationary base of operations.
  • Permanent fiber optic cable design provides superior signal throughput over detachable fiber optic cable systems
  • Agriculture
  • Education & Academics
  • Environmental
  • Food & Beverage
  • Mining & Minerals
  • Oil & Gas
  • Pharmaceutical
ASD, Inc.ASD Inc., a Malvern PANalytical company, is the global leader in high-performance analytical instrumentation solutions, solving some of the most challenging real-world materials measurement problems. ASD spectrometers — unparalleled in providing laboratory-grade results in the field or on-site — are the instruments of choice for remote sensing, environmental sciences, agricultural, mining, pharmaceutical and pulp and paper industry applications, where results drive paradigm-changing insights, efficiency and profit.
[Remote Sensing, LabSpec, FieldSpec, NIR System, PANalytical, ASD, Geology, Mining, TerraSpec, Spectral Acquisition, SummitCAL]