28 May 1999 High-performance 3D-imaging laser sensor
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A 3D imaging laser sensor is presented providing rapid acquisition of 3D data of naturally reflecting objects. The sensor is of a rugged and compact design, is eye-safe, and can be used even in adverse environmental conditions for a wide range of applications. The sensor makes use of high-speed laser ranging based on the time- of-flight method with pulsed laser diodes and of mechanically scanning the laser beam and the optical axis of the rangefinder's receiver. The maximum achievable range to non-cooperative targets is up to 350 m. The field-of-view of the sensor is settable by software commands and can be up to 80 degrees X 340 degrees with an angular resolution of the scanning mechanism of up to 0.018 degrees. Data are provided at a standard parallel interface allowing easy integration with any standard PC based system for data visualization and data processing. The primary data include for each independent range measurement the coordinates in the sensor's local polar coordinate system, and the intensity of the received laser pulse to provide information on target's reflectivity. These data are provided with an average data rate up to 8000 measurements per second. A PC based acquisition program allows on-line color-encoded visualization, data storage, and data export as ASCII data, VRML data, and other widely used formats. Data acquired with the sensor are presented and accuracy and ranging capability are discussed.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andreas Ullrich, Rainer Reichert, Nikolaus Studnicka, Johannes Riegl, "High-performance 3D-imaging laser sensor", Proc. SPIE 3707, Laser Radar Technology and Applications IV, (28 May 1999); doi: 10.1117/12.351395; https://doi.org/10.1117/12.351395

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