Method for improving the received signal to noise ratio of a laser rangefinder
US7184130B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 2004 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Aug 11, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4873
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved technique for a laser rangefinder includes a pulsed laser sending out a repetition of light pulses and the received signal (light pulse and noise components combined) being analyzed by continuous averaging of successive received signal discrete time sequences, each sequence beginning with the onset of transmitted laser light. Also, a circuit generates high potentials for the laser diode driving circuitry that simultaneously drives the laser diode, having at least one of several beneficial characteristics: It is conveniently synchronous with the light pulse send/receive process to reduce the effects of noise on the receive section. It is energy efficient in converting low battery potentials to higher voltages. Finally, it utilizes a minimized number of components, leading to high product economy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.