FieldSpec ® 4 Hi-Res is a high resolution spectroradiometer designed for faster and more accurate spectral data measurements for a wide range of remote sensing applications.
High resolution spectroradiometer
FieldSpec ® 4 Hi-Res is a high resolution spectroradiometer designed for faster and more accurate spectral data measurements for a wide range of remote sensing applications.
The 3 nm VNIR, the 8 nm SWIR spectral resolution of the FieldSpec 4 Hi-Res spectroradiometer, provides superior spectral performance across the full range solar radiation spectrum (350-2500 nm). The improved spectral resolution in the SWIR range (1000 – 2500 nm) is particularly useful for detecting and identifying compounds with narrow spectral characteristics at longer wavelengths, such as alteration mineralogy and gases for atmospheric analysis.
In addition, 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, in addition to terrestrial exchange and construction of spectral libraries .
Like all ASD FieldSpec spectroradiometers, FieldSpec 4 Hi-Res can be used as a high resolution spectrometer for very accurate contact reflectance measurements.
| Spectral scale | 350-2500 nm |
| Spectral Resolution | 3 nm @ 700 nm 8 nm @ 1400/2100 nm |
| Sampling interval | 1,4 nm @ 350-1000 nm 1,1 nm @ 1001-2500 nm |
| Scan time | 100 milissegundos |
| Specification of scattered light | VNIR 0,02%, SWIR 1 e 2 0,01% |
| Wavelength reproducibility | 0,1 nm |
| Wavelength accuracy | 0,5 nm |
| Maximum brightness | VNIR 2X Solar, SWIR 10X Solar |
| Channels | 2151 |
| Detector |
VNIR detector (350-1000 nm): SWIR 1 detector of 512 element silicon matrix (1001-1800 nm): Photographic Index Graduated InGaAs, Cooled Two-Stage TE SWIR 2 Detector (1801-2500 nm): Graded InGaAs Photodiode Index, Two Stage Cooled TE |
| Input | 1.5 m optical fiber (25 ° field of view). Optional more restricted field of view fiber available. |
| Noise (NEdL) | VNIR 1,0 X10 -9 W / cm 2 / nm / sr @ 700 nm SWIR 1 1,4 X10 -9 W / cm 2 / nm / sr @ 1400 nm SWIR 2 2,2 X10 -9 W / cm 2 / nm / sr @ 2100 nm |
| weight | 5,44 kg (12 lbs) |