HyMap

HyVista Corporation operates a HyMap™ hyperspectral scanner manufactured by Integrated Spectronics Pty Ltd.

The HyMap provides 128 bands across the reflective solar wavelength region of 0.45 – 2.5 um with contiguous spectral coverage (except in the atmospheric water vapour bands) and bandwidths between 15 – 20 nm.

The sensor operates in a 3-axis gyro stabilised platform to minimise image distortion due to aircraft motion. The system can be rapidly adapted into any aircraft with a standard aerial camera port and is transported between international survey sites by air freight.

The Hymap provides a signal to noise ratio (>500:1) and image quality that is setting the industry standard.

Laboratory calibration and operational system monitoring ensures the calibrated imagery required for demanding spectral mapping tasks.

Geolocation and image geocoding achieved with DGPS and an integrated IMU (inertial monitoring unit).

The spatial configuration of the HyMap sensor is shown below.

  • IFOV – 2.5 mr along track, 2.0 mr across track
  • FOV – 61.3 degrees (512 pixels)
  • GIFOV – 3 – 10 m (typical operational range)

The spectral configuration of the HyMap sensor is shown below for each of the 4 spectral modules containing 32 bands each, totaling 128 spectral bands.

Module Spectral Range Bandwidth across
module
Average spectral
sampling interval
VIS 0.45 – 0.89 um 15 – 16 nm 15 nm
NIR 0.89 – 1.35 um 15 – 16 nm 15 nm
SWIR1 1.40 – 1.80 um 15 – 16 nm 13 nm
SWIR2 1.95 – 2.48 um 18 – 20 nm 17 nm

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