Airborne testing of small, fast, rugged Fourier Transform Spectrometer for geologic survey use

0
- By: ,

Courtesy of D&P Instruments

Designs & Protoypes, LTD. has fielded a small, very fast, and rugged rotary Fourier Transform Spectrometer (FTS) which can be used for environ-mental remote sensing and chemical detection. The continuous rotary scan of the Turbo FT allows operation without the laser reference of conventional FT spectrometers, and it has been demonstrated to deliver 360 spectral scans per second and 1 cm-1 resolution, with excellent lineshape. A new 'space frame' version of the interferometer, with excellent mechanical and thermal stability, was field tested in an airborne system during the year 2000, with good results. The interferometer for this instrument is palm sized, and weighs 20 oz. It is also totally sealed from the environment, and was mounted, with its drive electronics, into a temperature stabilized enclosure for the field test.

The airborne system was a single pixel configuration, mounted in a fixed wing research aircraft used for geologic surveys. Dual on-board blackbodies all-owed regular intervals of in-flight calibration. The calibrated output achieved an NEDT of better than 0.5 degrees K at 300 K. The pixel size was 10 meters by 10 meters at an altitude of 100 meters.

Customer comments

No comments were found for Airborne testing of small, fast, rugged Fourier Transform Spectrometer for geologic survey use. Be the first to comment!