Research On Polarization Property Of Millimeter-Wave Thermal Radiation In Random Rough Surface

Millimetre-wave Porlarimetric measurement can gain more information form the image scene when compared to traditional methods,those information can be characterized as polarization parameters such as Stokes matrix,degree of linear polarization(DoLP),linear polarization ratio(LPR).Polarization parameters can be widely used for target detection and material classification.In Millimetre-wave Porlarimetric Measurement,most medium cannot be regarded as smooth compared to electromagnetic wavelength,therefore,research on polarization property of millimeter-wave thermal radiation in random rough surface makes a significant difference in the field of development of millimeter-wave porlarimetric measurement technology and development of applications based on polarization parameters.Based on the physical model of millimeter-wave polarization radiation,this paper conducted the study of the influence on polarization property of roughnessness.The computing method of emissivity of smooth and rough surface has been introduced at the beginning.Next,proceed form the principle of Millimetre-wave Porlarimetric measurement,we introduced the computing method of Millimetre-wave Polarization parameters.Then,we computed Polarization parameters of some classical ground feature in different roughness by the data of simulation and experiment,compared their polarization property,and analyzed the influence of surface roughness on polarization property.Lastly,we researched the influence of surface roughness on metals and dielectrics classification methods.