Three-dimensional laser radar modeling

Ove K. Steinvall; Tomas Carlsson

doi:10.1117/12.440110

19 September 2001 Three-dimensional laser radar modeling

Ove K. Steinvall, Tomas Carlsson

Proceedings Volume 4377, Laser Radar Technology and Applications VI; (2001) https://doi.org/10.1117/12.440110
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

Laser radars have the unique capability to give intensity and full 3-D images of an object. Doppler lidars can give velocity and vibration characteristics of an objects. These systems have many civilian and military applications such as terrain modelling, depth sounding, object detection and classification as well as object positioning. In order to derive the signal waveform from the object one has to account for the laser pulse time characteristics, media effects such as the atmospheric attenuation and turbulence effects or scattering properties, the target shape and reflection (BRDF), speckle noise together with the receiver and background noise. Finally the type of waveform processing (peak detection, leading edge etc.) is needed to model the sensor output to be compared with observations. We have developed a computer model which models performance of a 3-D laser radar. We will give examples of signal waveforms generated from model different targets calculated by integrating the laser beam profile in space and time over the target including reflection characteristics during different speckle and turbulence conditions. The result will be of help when designing and using new laser radar systems. The importance of different type of signal processing of the waveform in order to fulfil performance goals will be shown.

Citation Download Citation

Ove K. Steinvall and Tomas Carlsson "Three-dimensional laser radar modeling", Proc. SPIE 4377, Laser Radar Technology and Applications VI, (19 September 2001); https://doi.org/10.1117/12.440110

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