[Introduction to BRDF]

[BRDF Measurement PAGE]

ULGS: The University of Lethbridge Goniometer Systems

 

This page will give a brief overview of the current range of systems that have been developed at the University of Lethbridge. These systems are state-of-the-art and some of the best systmes of their kind in the world. We continue to develop new systems and ideas for the sampling of a surface BRDF. 

Manual Instruments

ULGS-1:

This was the first prototype instrument. Full manual control - slow but it works and is useful.

Arc raduis = 60 cm

Instrument = ASD Fieldspec 3 FR

ULGS-1.5:

The latest develoment for the manual instrument - constructed in aluminum with 10 degree angular resolution.

Arc raduis = 120 cm

Instrument = ASD Fieldspec 3 FR

Automatic Instruments

ULGS-2:

The first automatic instrument. Stepper motor controlled, quarter arc design, mast, real-time reflectance computation. Built in collaboration with Dr. Scott Noble - University of Saskatchewan.

Arc raduis = 200 cm

Instrument = Ocean Optics USB 4000 (2)

ULGS-2.5:

A heavy payload quarter arc system developed for use with imaging spectroradiometers.

Arc raduis = 200 cm

Instrument = Specium ImSpector V10E

ULGS-3:

The most recent quarter arc design - built to accomodate the Spectral Vista HR-1024

Arc raduis = 160 cm

Instrument = Spectral Vista HR-1024