High-Update-Rate (25 kHz) Laser Ranging with Random Noise Modulation for Fast and Precise Absolute Distance Measurement
Year: 2025
Type: article
Abstract: This paper proposes a technique for precise distance measurement under laser random noise using autocorrelation demodulation. We conducted measurements within a 2 m range using a commercial digitizer with a sampling rate of 40 GS/s. The single signal acquisition time is 40 μs, and the measurement results achieved an accuracy of 30 μm and a standard deviation (SD) of 8 μm. This method can also improve measurement accuracy by increasing the sampling rate and expanding the measurement range by extending the duration of a single sampling.
Source: Sensors
DOI: 10.3390/s25226985
Authors: Yongchao Chen, Tianci Liu, Shenggang Liu, Longhuang Tang, Heli Ma, Tianjiong Tao, Xing Jia, Jian Wu, Chengjun Li, Xiang Wang, Zongchen Wang, Weilu Chen, Xirui Zhang, Entao Li, Jia Shi, Jidong Weng
Language: English
Subfield: Instrumentation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,137
OpenAlex ID: W4416393064