High-resolution random-modulation cw lidar

Xiao Ai; Richard Nock; John G. Rarity; Naim Dahnoun

doi:10.1364/AO.50.004478

High-resolution random-modulation cw lidar

Xiao Ai^*, Richard Nock, John G. Rarity, Naim Dahnoun

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

A high-resolution random-modulation continuous wave lidar for surface detection using a semiconductor laser diode is presented. The laser diode is intensity modulated with the pseudorandom binary sequence. Its enhanced resolution is achieved via interpolation and a novel front-end analog technique, lowering the requirement of the analog-to-digital converter sampling rate and the associated circuitry. Its mathematical model is presented, including the derivation of the signal-to-noise ratio and the distance standard deviation. Analytical and experimental results demonstrate its capability to achieve distance accuracy of less than 2 cm within 2:6 ms acquisition time, over distances ranging from 1 to 12 m. The laser diode emits 1:4mWof optical power at a wavelength of 635nm.

Original language	English
Pages (from-to)	4478-4488
Number of pages	11
Journal	Applied Optics
Volume	50
Issue number	22
DOIs	https://doi.org/10.1364/AO.50.004478
Publication status	Published - 1 Aug 2011

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title = "High-resolution random-modulation cw lidar",

abstract = "A high-resolution random-modulation continuous wave lidar for surface detection using a semiconductor laser diode is presented. The laser diode is intensity modulated with the pseudorandom binary sequence. Its enhanced resolution is achieved via interpolation and a novel front-end analog technique, lowering the requirement of the analog-to-digital converter sampling rate and the associated circuitry. Its mathematical model is presented, including the derivation of the signal-to-noise ratio and the distance standard deviation. Analytical and experimental results demonstrate its capability to achieve distance accuracy of less than 2 cm within 2:6 ms acquisition time, over distances ranging from 1 to 12 m. The laser diode emits 1:4mWof optical power at a wavelength of 635nm.",

author = "Xiao Ai and Richard Nock and Rarity, {John G.} and Naim Dahnoun",

year = "2011",

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doi = "10.1364/AO.50.004478",

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journal = "Applied Optics",

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T1 - High-resolution random-modulation cw lidar

AU - Ai, Xiao

AU - Nock, Richard

AU - Rarity, John G.

AU - Dahnoun, Naim

PY - 2011/8/1

Y1 - 2011/8/1

N2 - A high-resolution random-modulation continuous wave lidar for surface detection using a semiconductor laser diode is presented. The laser diode is intensity modulated with the pseudorandom binary sequence. Its enhanced resolution is achieved via interpolation and a novel front-end analog technique, lowering the requirement of the analog-to-digital converter sampling rate and the associated circuitry. Its mathematical model is presented, including the derivation of the signal-to-noise ratio and the distance standard deviation. Analytical and experimental results demonstrate its capability to achieve distance accuracy of less than 2 cm within 2:6 ms acquisition time, over distances ranging from 1 to 12 m. The laser diode emits 1:4mWof optical power at a wavelength of 635nm.

AB - A high-resolution random-modulation continuous wave lidar for surface detection using a semiconductor laser diode is presented. The laser diode is intensity modulated with the pseudorandom binary sequence. Its enhanced resolution is achieved via interpolation and a novel front-end analog technique, lowering the requirement of the analog-to-digital converter sampling rate and the associated circuitry. Its mathematical model is presented, including the derivation of the signal-to-noise ratio and the distance standard deviation. Analytical and experimental results demonstrate its capability to achieve distance accuracy of less than 2 cm within 2:6 ms acquisition time, over distances ranging from 1 to 12 m. The laser diode emits 1:4mWof optical power at a wavelength of 635nm.

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High-resolution random-modulation cw lidar

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