Light wave distance measuring apparatus
US7177014B2 · kind B2 · utility
52Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2005 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Oct 1, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4915
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reference electrical signal oscillated by the main oscillator (11) has two kinds of frequencies (f1, f2) which are different from each other and any one of which is alternatively selected, a sampling signal is synchronized with the reference electrical signal once every n times, and a frequency (fs) of the sampling signal is an average value of the two kinds of frequencies (f1, f2) of the reference electrical signal, and the A/D conversion portion carries out at least one A/D conversion per period of the reference electrical signal and the received electrical signal based on the sampling signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.