Automatic gain control system for use with multiple wavelength signal detector
US6594000B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 25, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Aug 11, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A90/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is an automatic gain control system for use with a multiple wavelength laser LIDAR system that transmits sets of time-separated interrogating signals to generate sets of time-separated return signals. A comparator defines a plurality of unique peak amplitudes and a corresponding plurality of unique binary words associated therewith. The comparator receives each of the laser LIDAR system's return signal from an i-th set thereof and outputs a binary word indicative of a peak amplitude achieved thereby. The binary word is one of the plurality of unique binary words. A memory has each of a plurality of address locations defined by one of the plurality of unique binary words. Each address location stores a unique gain value. An adjustable gain amplifier has a signal input for receiving each return signal and a gain adjustment input coupled to the memory. One of the unique gain values associated with each return signal from the i-th set is supplied to the amplifier's gain adjustment input to adjust the gain thereof for corresponding ones of the return signals from an (i+1)-th set of the return signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.