Phase measurement method and application thereof
US7453554B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2007 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Feb 9, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/491
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A phase measurement method is disclosed, which includes inputting a predetermined voltage to the photodiode; receiving an optical signal and transforming into an electrical signal; generating a sampled signal with a signal transforming process; determining whether the amplitude value of the sampled signal in a predetermined range or not; if the amplitude of the sampled signal is not in the predetermined amplitude range, adjusting the predetermined voltage and receiving the optical signal and judging again until the amplitude value falls into the predetermined amplitude range; if the amplitude of the sampled signal is in the predetermined amplitude range, calculating the first phase value; and judging whether the predetermined voltage adjusted or not. If the predetermined voltage has been adjusted, calculating the compensating phase value and the second phase value in accordance with the adjusted predetermined voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.