Noise-Modulated Optomechatronic Distance-Measuring System

Baetz, Werner; Braasch, J.; Holzapfel, W. B.

doi:10.1109/tie.2005.851652

Cited by 4 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Range finder systems, which use a random-noise modulated signal, have been discussed in the fields of microwave radar and Lidar systems. [3][4][5][6][7] Lidar systems fall into two specific categories: pulse systems and CW systems. The pulse system has been widely used for a commercial range finder.…”

mentioning

confidence: 99%

Study on the resolution improvement of a range finder using the chaotic frequency characteristics of a laser diode

et al. 2017

View full text Add to dashboard Cite

Study on the resolution improvement of a range finder using the chaotic frequency characteristics of a laser diode," Opt. Eng. 56(6), 064101 (2017), doi: 10.1117/1.OE.56.6.064101. Abstract. An optical range finder system that relies on laser diodes' frequency noise, instead of intensity or frequency modulations, and its improvement in resolution are reported. The distance to the target is measured by calculating the cross-correlation of two signals reflected from the target and reference mirrors. These two signals are converted from the laser diodes' frequency noise signals by frequency/intensity converters, such as a Fabry-Perot etalon. We obtained the distance to the target by checking time lags between the target and reference beams at the highest correlation coefficient. We also measured the change in the correlation coefficient around the peak sampling point by adjusting the reference-path length, achieving a resolving power of AE3 mm. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

show abstract

mentioning

confidence: 99%