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Digital phase meter for a laser heterodyne interferometer
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Loya, Frank |
| Copyright Year | 2008 |
| Description | The Digital Phase Meter is based on a modified phase-locked loop. When phase alignment between the reference input and the phase-shifted metrological input is achieved, the loop locks and the phase shift of the digital phase shifter equals the phase difference that one seeks to measure. This digital phase meter is being developed for incorporation into a laser heterodyne interferometer in a metrological apparatus, but could also be adapted to other uses. Relative to prior phase meters of similar capability, including digital ones, this digital phase meter is smaller, less complex, and less expensive. The phase meter has been constructed and tested in the form of a field-programmable gate array (FPGA). |
| File Size | 72714 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080047225 |
| Archival Resource Key | ark:/13960/t6c29w035 |
| Language | English |
| Publisher Date | 2008-11-01 |
| Access Restriction | Open |
| Subject Keyword | Phase Shift Circuits Phase Locked Systems Phase Shift Digital Electronics Heterodyning Metrology Laser Applications Interferometers Field-programmable Gate Arrays Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
