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A Digital Signal Processing System for Terrestrial Laser Range Finding Systems

Kufner, Michael and Kölbl, Josef and Dekorsy, Thomas (2022) A Digital Signal Processing System for Terrestrial Laser Range Finding Systems. IEEE Sensors Journal, 22 (15), pp. 15488-15496. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/JSEN.2022.3187126. ISSN 1530-437X.

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Official URL: https://ieeexplore.ieee.org/document/9816073


This paper presents a digital processing system for terrestrial laser range finding systems. It is mainly comprised of a commercial digital signal processor with 400 MHz. For the signal digitization, an analog-to-digital converter with a 12-bit resolution is sampled with 50 MS/s. Such a digital system architecture has several advantages: automatic gain control, coherent multi-pulse averaging, digital signal filtering, upsampling, and advanced peak detection methods. When combined with a suitable laser and detector unit, the digital system outperforms the classic analog threshold-based laser finders with regard to required laser output power, multitarget discrimination, and peak detection accuracy. The best results were achieved using a matched filter, compared to wavelet denoising techniques and classic Savitzky-Golay filtering. Finally, this system architecture allows for a small-sized, lightweight, battery-operated, and energy-efficient, class 1 eye-safe laser range finder, capable of measuring distances up to multiple km with accuracy and precision of better than 1 m to uncooperative targets.

Item URL in elib:https://elib.dlr.de/188938/
Document Type:Article
Title:A Digital Signal Processing System for Terrestrial Laser Range Finding Systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Kufner, MichaelDeggendorf Institute of Technologyhttps://orcid.org/0000-0002-6369-0374UNSPECIFIED
Kölbl, JosefDeggendorf Institute of TechnologyUNSPECIFIEDUNSPECIFIED
Dekorsy, ThomasUNSPECIFIEDhttps://orcid.org/0000-0003-2257-2854UNSPECIFIED
Date:1 August 2022
Journal or Publication Title:IEEE Sensors Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 15488-15496
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Keywords:Distance measurement, digital laser range finder, digital signal filtering, wavelet denoising, coherent multi-pulse averaging
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics > Leitung und Sonderaufgaben TP
Deposited By: Heidenreich, Angela
Deposited On:17 Oct 2022 14:38
Last Modified:21 Oct 2022 12:54

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