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

Ulrich Schael; Hendrik Rothe

doi:10.1117/12.500440

30 May 2003 Advanced simulation of eye-safe imaging laser radar for range estimation, system comparison, and design process

Ulrich Schael, Hendrik Rothe

Author Affiliations +

Proceedings Volume 5144, Optical Measurement Systems for Industrial Inspection III; (2003) https://doi.org/10.1117/12.500440
Event: Optical Metrology, 2003, Munich, Germany

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.

Citation Download Citation

Ulrich Schael and Hendrik Rothe "Advanced simulation of eye-safe imaging laser radar for range estimation, system comparison, and design process", Proc. SPIE 5144, Optical Measurement Systems for Industrial Inspection III, (30 May 2003); https://doi.org/10.1117/12.500440

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