Distance estimation of a moving object within a range gate

Jun-Hyung Kim; Jae-Hyung Choi; Joohyoung Lee

doi:10.1117/1.OE.57.9.093109

24 September 2018 Distance estimation of a moving object within a range gate

Jun-Hyung Kim, Jae-Hyung Choi, Joohyoung Lee

Author Affiliations +

Optical Engineering, Vol. 57, Issue 9, 093109 (September 2018). https://doi.org/10.1117/1.OE.57.9.093109

Abstract

We propose an approach to the problem of estimating the distance of a moving object with a laser range-gated imaging (LRGI) sensor so as to keep constantly capturing images of the moving object. The issue of acquiring images of the moving object without interruption is particularly important for the surveillance system equipped with the LRGI sensor since the recognition of the moving object is generally achieved by inspecting the range-gated images. We first show that the distance estimation problem can be converted to the parameter estimation problem by randomly shifting the range gate from the desired position. Then, we present two parameter estimation techniques that are based on maximum-likelihood estimation. We show the performances of the proposed method through numerical simulations.

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Jun-Hyung Kim, Jae-Hyung Choi, and Joohyoung Lee "Distance estimation of a moving object within a range gate," Optical Engineering 57(9), 093109 (24 September 2018). https://doi.org/10.1117/1.OE.57.9.093109

Received: 6 April 2018; Accepted: 5 September 2018; Published: 24 September 2018

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