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A digital signal processing system for coherent laser radarA data processing system for use with continuous-wave lidar is described in terms of its configuration and performance during the second survey mission of NASA'a Global Backscatter Experiment. The system is designed to estimate a complete lidar spectrum in real time, record the data from two lidars, and monitor variables related to the lidar operating environment. The PC-based system includes a transient capture board, a digital-signal processing (DSP) board, and a low-speed data-acquisition board. Both unprocessed and processed lidar spectrum data are monitored in real time, and the results are compared to those of a previous non-DSP-based system. Because the DSP-based system is digital it is slower than the surface-acoustic-wave signal processor and collects 2500 spectra/s. However, the DSP-based system provides complete data sets at two wavelengths from the continuous-wave lidars.
Document ID
19920052060
Document Type
Conference Paper
Authors
Hampton, Diana M. (Sverdrup Technology, Inc. Huntsville, AL, United States)
Jones, William D. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Rothermel, Jeffry (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
LASERS AND MASERS
Report/Patent Number
TABES PAPER 91-279
Meeting Information
TABES 91 - Annual Technical and Business Exhibition and Symposium(Huntsville, AL)
Funding Number(s)
CONTRACT_GRANT: NAS8-37814
Distribution Limits
Public
Copyright
Other