Data acquisition and processing system for spectral analysis of the temporal velocity variations in a gas flow
Abstract
A data acquisition and processing system is described which enables determination of the power spectral density of velocity variations in a gas flow with laser anemometry methods. Two single systems working at low data rate with high precision are used for data acquisition. Data processing is handled by a minicomputer. Several tests were carried out to determine the properties of the overall system.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- September 1975
- Bibcode:
- 1975STIN...7711373P
- Keywords:
-
- Flow Velocity;
- Gas Flow;
- Laser Doppler Velocimeters;
- Spectrum Analysis;
- Computer Programming;
- Data Acquisition;
- Data Processing;
- Minicomputers;
- Power Spectra;
- Time Functions;
- Variations;
- Velocity Distribution;
- Instrumentation and Photography