Distant measurement method and distant measurement system
US7738083B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2008 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Feb 4, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A distant measurement method and a distant measurement system are provided. The distant measurement method includes the following steps: emitting a first light beam and a second light beam from an emitting terminal, wherein the first light beam travels toward a target; providing a switching sequence by a switch mechanism; placing a receiving terminal to receive the first light beam reflected from the target in accordance with the switching sequence and correspondingly provide a first electrical signal, and to receive the second light beam and correspondingly provide a second electrical signal; and utilizing a controlling terminal to receive the first and second electrical signals, and calculate distance between the distant measurement system and the target in accordance with a phase differential formed between the first and second electrical signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.