Gm-APD laser radar fog-penetrating imaging reconstruction method based on single-quantity estimation

• Main Authors: SUN JIANFENG, LU WEI, JIANG PENG, LIU DI, LI SINING, GAO SHANG
• Format: Patent
• Language: Chinese; English
• Published: 27.11.2020
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention discloses a Gm-APD laser radar fog-penetrating imaging reconstruction method based on single-quantity estimation. The method comprises the steps of step 1, determining foggy day imagingecho composition and distribution thereof, foggy day imaging being photons received by a foggy day laser radar; step 2, obtaining a backscattering distribution model of a Gm-APD laser radar accordingto the foggy day imaging echo composition and distribution in the step 1; step 3, on the basis of an attenuation coefficient calculation formula or a visibility empirical formula, measuring and calculating an attenuation coefficient mu in the backscattering distribution model obtained in the step 2; step 4, substituting the attenuation coefficient mu obtained by calculation into a back scatteringdistribution model in the step 2, and carrying out maximum likelihood estimation on the back scattering distribution model substituted into the attenuation coefficient mu to obtain an estimated valueof the collision frequency k