Chinese Journal of Quantum Electronics ›› 2020, Vol. 37 ›› Issue (4): 477-496.

• Special Issue on Laser Propogation and Detection in Atmosphere • Previous Articles     Next Articles

Progress of measurement techniques of multi-angle scattering properties of atmospheric particles

HU Shuai1;2∗, LIU Lei1;2∗, LIU Xichuan1, GAO Taichang1;2   

  1. 1 College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China; 2 National Key Laboratory on Electromagnetic Environment and Electro-optical Engineering, National University of Defense Technology, Nanjing 211101, China
  • Received:2020-04-30 Revised:2020-05-11 Published:2020-07-28 Online:2020-07-21

Abstract: The multi-angle scattering properties of atmospheric particles includes scattering function and scattering matrix (also known as “M¨ueller matrix”), which are not only the basic parameters for unpolarized and polarized radiative transfer simulation, but also the information carriers of the microphysical properties of atmospheric particles. Because of its fundamental position, how to obtain the scattering characteristics of aerosol has become an international hot spot of atmospheric research. The actuality and progress of the measurement techniques of the scattering function and M¨ueller matrix are reviewed, and the main content can be divided into four parts, as shown in the following: (1) The challenge and necessity of developing the measurement techniques of the multi-angle scattering properties are pointed out by analyzing the uncertainty of aerosol micro-physical properties and the limitation and complexity of the existed scattering theory. (2) The multi-angle scattering measurement techniques at visible-infrared band are described concisely, where the measurement instruments and prototypes of scattering function and M¨ueller matrix are grouped into three types according to their design principles, and the development progress, advantages and disadvantages of the different types of design are analyzed as well. (3) The research status, advantages and disadvantages of the measurement techniques in microwave band are introduced briefly. (4) The existing problems in the multi-angle scattering properties measurement techniques are summarized, and the corresponding research hot spots and development trend are prospected. This work can provide a reference for the further study of the multi-angle scattering properties of the atmospheric particles.

Key words: atmospheric optics, atmospheric particles, multi-angle scattering properties, measurement techniques, light scattering

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