Abstract

The output amplitude of the differential circuit is studied for differential discrimination in pulsed laser time-of-flight systems. Based on the studies of the probability of detection and the probability of false alarms, the minimum detectable input signal of differential discrimination can be calculated. The results indicate that the differential discrimination detectability of the small signal will be reduced. A combined discrimination is proposed in this Letter to improve the time resolution of the large signal and ensure the probability of detection of the small signal at the same time. A proper value of the circuit parameter is found to balance the time resolutions of the small and large signals.

© 2016 Chinese Laser Press

Fast differential discrimination approach to improve time resolution with multiple returns for time-of-flight system

Dongxian Geng, Wei Wang, Pengfei Du, and Mali Gong
Appl. Opt. 54(20) 6260-6268 (2015)

Pulsed light time-of-flight measurement based on a differential hysteresis timing discrimination method

Jinqing Yang, Guohua Gu, Weixian Qian, Kan Ren, Dongming Lu, Jun Zhang, Pingping Guo, Qingsong Gao, Minjie Wan, and Qian Chen
Opt. Express 28(16) 23554-23568 (2020)

Profiling of hot surfaces by pulsed time-of-flight laser range finder techniques

Kari Määttä, Juha Kostamovaara, and Risto Myllylä
Appl. Opt. 32(27) 5334-5347 (1993)

Varied threshold with laser flight time in scannerless range-gated ladar

Long Wu, Yuan Zhao, Liping Liu, Yong Zhang, and Jie Wu
Appl. Opt. 49(34) H20-H26 (2010)

Estimation of the differential pulse propagation times in two-color laser ranging systems

Kwaifong E. Im and C. S. Gardner
J. Opt. Soc. Am. A 3(1) 143-156 (1986)