Spectral LADAR Receiver
Abstract
The Ranging Imaging Spectrometer (RIS) combines hyperspectral and LADAR imaging capabilities in a single system, allowing both ranging and spectral discrimination to be performed. The RIS couples the Scannerless Range Imaging LADAR developed at Sandia National Laboratories with a Computed Tomographic Imaging Spectrometer (CTIS) operating between 600 nm and 900 nm to provide a hyperspectral snapshot-based imaging and ranging spectrometer. The output of the system is four dimensional, (x, y, z, and wavelength) data cube. The RIS spectral resolution is 10 nm; it has been demonstrated to 19nm. Its angular resolution is 2.8 mr; and its range resolution is 17.5 cm. It collects spectral samples in a 77 x 77 pixel format with angular subtend of 12.5 deg. The laser emitter wavelength is 857 nm. This report documents the RIS design, construction, testing, and range and spectral calibrations. It details solutions to the problems encountered in coupling the two systems, including (optimizing the CTIS for the 857-nm wavelength) and development of range correction technique that reduces error in range reconstruction by a factor of 10.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 11, 2004
- Accession Number
- ADA430287
Entities
People
- Brian A. Kinder
- Eustace L. Dereniak
Organizations
- University of Arizona