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Proceedings Paper

Advanced simulation of eye-safe imaging laser radar for range estimation, system comparison, and design process
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Paper Abstract

The development of eye-safe, imaging, scannerless laser radar systems based on gated viewing with a range of some hundred meters is difficult due to the lack of fast and amplifiable detector arrays for wavelengths in the near infrared (NIR). Nevertheless, one basic approach is to gate an InGaAs-FPA-camera with an electro-optical modulator (EOM) in the range of about 30 ns to achieve a sufficient resolution of depth. The laser radar works with a Nd:YAG-OPO laser of 1574 nm wavelength, 7 ns pulse length, and 25 Hz pulse frequency. Because of the EOM in conjunction with an adapted lens design and the resolution of 128 by 128 pixels FPA, the main interest is object detection. This requires imaging with optimized system performance to reach further target distances. In this paper, we present the simulation of the current system. Comparison of simulation data with indoor measurements is shown by the calculation of range images from a sequence of range slices. We discuss advantages of this simulation for range estimation, system comparison and design process.

Paper Details

Date Published: 30 May 2003
PDF: 10 pages
Proc. SPIE 5144, Optical Measurement Systems for Industrial Inspection III, (30 May 2003); doi: 10.1117/12.500440
Show Author Affiliations
Ulrich Schael, Univ. of the Federal Armed Forces (Germany)
Hendrik Rothe, Univ. of the Federal Armed Forces (Germany)

Published in SPIE Proceedings Vol. 5144:
Optical Measurement Systems for Industrial Inspection III
Wolfgang Osten; Malgorzata Kujawinska; Katherine Creath, Editor(s)

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