Optical designs for improving performances of aerosol sensing micro-pulse lidars

M. A. Rubio, John A Reagan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper addresses current design improvement issues of aerosol sensing Micro-Pulse Lidars (MPL). MPLs are designed to adhere to eye-safety restrictions while achieving acceptable signal to noise ratios (SNR). This method is realized by reducing the per pulse energy of the laser and employing a narrow receiver field-of-view (FOV). Due to the narrow FOV requirement, only a partial return signal is measured until the laser beam propagates a distance where the receiver FOV fully overlaps the laser beam. This is called the full overlap distance and is usually 4 km or more for reasonable MPL parameters. Accurate MPL measurements are typically only possible beyond this distance. The fraction of laser beam energy that is within the receiver FOV versus range is called the overlap function. The causes of the overlap function are discussed. An overlap related problem with current MPL designs is that the majority of the atmospheric aerosols are located below a altitude of 4 km to 5 km, within the partial overlap region. Another problem is that the overlap function is not thermally constant. This introduces errors in the experimentally derived overlap function and system constant factor, ultimately leading to errors in the retrieved lidar signal.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsU.N. Singh
Pages25-35
Number of pages11
Volume4484
DOIs
StatePublished - 2002
EventLidar Remote Sensing for Industry and Environment Monitoring II - San Diego, CA, United States
Duration: Jul 30 2001Jul 31 2001

Other

OtherLidar Remote Sensing for Industry and Environment Monitoring II
CountryUnited States
CitySan Diego, CA
Period7/30/017/31/01

Fingerprint

Optical design
Aerosols
aerosols
field of view
Laser beams
pulses
receivers
laser beams
Atmospheric aerosols
Optical radar
Laser pulses
Signal to noise ratio
optical radar
safety
constrictions
signal to noise ratios
Lasers
requirements
energy
causes

Keywords

  • Eye-Safety
  • Lidar
  • MPL
  • Overlap
  • Thermally corrected MPL optical design

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Rubio, M. A., & Reagan, J. A. (2002). Optical designs for improving performances of aerosol sensing micro-pulse lidars. In U. N. Singh (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4484, pp. 25-35) https://doi.org/10.1117/12.452790

Optical designs for improving performances of aerosol sensing micro-pulse lidars. / Rubio, M. A.; Reagan, John A.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / U.N. Singh. Vol. 4484 2002. p. 25-35.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Rubio, MA & Reagan, JA 2002, Optical designs for improving performances of aerosol sensing micro-pulse lidars. in UN Singh (ed.), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4484, pp. 25-35, Lidar Remote Sensing for Industry and Environment Monitoring II, San Diego, CA, United States, 7/30/01. https://doi.org/10.1117/12.452790
Rubio MA, Reagan JA. Optical designs for improving performances of aerosol sensing micro-pulse lidars. In Singh UN, editor, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4484. 2002. p. 25-35 https://doi.org/10.1117/12.452790
Rubio, M. A. ; Reagan, John A. / Optical designs for improving performances of aerosol sensing micro-pulse lidars. Proceedings of SPIE - The International Society for Optical Engineering. editor / U.N. Singh. Vol. 4484 2002. pp. 25-35
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