A digital counting and display circuit for long distance laser rangefinder is presented. The laser rangefinder uses a pulsed Nd:YAG laser emitting in the near-infrared spectral region at the wavelength of 1.06 μm to measure distances to targets with a resolution of 5 m, an accuracy of ±1.5 m, and a maximum range of 15 km based on a direct time-of-flight method. The detection is achieved with a probability of detection of 0.99 and a probability of false alarm of 1.5×10-7. The digital circuit is characterized by its simplicity, versatility and reliability. It is placed at the end of an optoelectronic detection chain formed by a silicon avalanche photodiode, a low-noise and fast multistage amplifier, and a fast analog-to-digital converter.
|Title of host publication
|Optical Sensors 2021
|Francesco Baldini, Jiri Homola, Robert A. Lieberman
|Published - 2021
|Proceedings of SPIE - The International Society for Optical Engineering
Bibliographical notePublisher Copyright:
© 2021 SPIE.
- Avalanche photodiode
- Range finder
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering