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ASD - FieldSpec - 4 Hi-Res: High Resolution Spectroradiometer

High resolution spectral data from a ruggedized field-portable spectroradiometer.

With 8 nm SWIR spectral resolution the FieldSpec 4 Hi-Res spectroradiometer is the instrument of choice for geological studies and atmospheric research.

The FieldSpec® 4 Hi-Res is a high resolution spectroradiometer designed for faster, more precise spectral data measurements for a wide array of remote sensing applications.


The 3 nm VNIR, 8 nm SWIR spectral resolution of the FieldSpec 4 Hi-Res spectroradiometer provides superior spectral performance across the full range solar irradiance spectrum (350 – 2500 nm). The enhanced spectral resolution in the SWIR range (1000 – 2500 nm) is particularly useful for detecting and identifying compounds with narrow spectral features in the longer wavelengths such as alteration mineralogy and gases for atmospheric analysis.


Additionally the 8 nm resolution meets or exceeds the spectral resolution of most hyperspectral sensors making the FieldSpec 4 Hi-Res spectroradiometer an excellent choice for sensor validation and calibration, as well as ground truthing and building spectral libraries.

Technical Specification

Spectral Range 350-2500 nm
Spectral Resolution 3 nm @ 700 nm
8 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
  • 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.
[LabSpec, Remote Sensing, FieldSpec, NIR System, PANalytical, ASD, Geology, Mining, TerraSpec, SummitCAL, Spectral Acquisition]