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Standoff Chemical Detection Using Laser Absorption Spectroscopy: A Review

期刊

REMOTE SENSING
卷 12, 期 17, 页码 -

出版社

MDPI
DOI: 10.3390/rs12172771

关键词

laser absorption spectroscopy; remote sensing; standoff detection; non-cooperative target; mid-infrared

资金

  1. National Natural Science Foundation of China [61505142]
  2. China Scholarship Council Academic Visiting Scholarship Program [201908120037]
  3. Science & Technology Development Fund of Tianjin Education Commission for Higher Education [2017KJ085, 2017KJ086]
  4. Program for Innovative Research Team in University of Tianjin [TD13-5036]
  5. EPSRC [EP/P001661/1] Funding Source: UKRI

向作者/读者索取更多资源

Remote chemical detection in the atmosphere or some specific space has always been of great interest in many applications for environmental protection and safety. Laser absorption spectroscopy (LAS) is a highly desirable technology, benefiting from high measurement sensitivity, improved spectral selectivity or resolution, fast response and capability of good spatial resolution, multi-species and standoff detection with a non-cooperative target. Numerous LAS-based standoff detection techniques have seen rapid development recently and are reviewed herein, including differential absorption LiDAR, tunable laser absorption spectroscopy, laser photoacoustic spectroscopy, dual comb spectroscopy, laser heterodyne radiometry and active coherent laser absorption spectroscopy. An update of the current status of these various methods is presented, covering their principles, system compositions, features, developments and applications for standoff chemical detection over the last decade. In addition, a performance comparison together with the challenges and opportunities analysis is presented that describes the broad LAS-based techniques within the framework of remote sensing research and their directions of development for meeting potential practical use.

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