Streak tube imaging lidar （STIL） is an active imaging system that has a high range accuracy with tile use of a pulsed lapser transmitter and streak tube receiver to produce 3D range inlages. This work investigates t...Streak tube imaging lidar （STIL） is an active imaging system that has a high range accuracy with tile use of a pulsed lapser transmitter and streak tube receiver to produce 3D range inlages. This work investigates the effect of tile time bin size oil the range accuracy of STIL systems based on the peak detection algorithm. The nunlerical simulation indicates that the time bin size has a significant effect on the range aceuracy, resulting in a modified analytical estimate of the range error. An indoor experilnent with a planar target is carried out to validate the theory that shows the linear relationship between tile range error and the time bin size. Finer 3D depth iinages of a fist model are acquired by using a smaller time bin size and the best range error of 0.003 In is achieved with the optimal time bin size of 0.07 ns.展开更多
The laser dazzling effect has always been a crucial issue for the scientific community.Nevertheless,the experiments to study the laser dazzling effect may cost a lot.Therefore,the technology of simulation is promising...The laser dazzling effect has always been a crucial issue for the scientific community.Nevertheless,the experiments to study the laser dazzling effect may cost a lot.Therefore,the technology of simulation is promising for this field.Additionally,the effectiveness of the laser dazzling needs to be evaluated by a no reference cost functions.A general model of CCD is proposed in this paper.Additionally,two cost functions are proposed to evaluate the image.The simulation result based on the model shows feasibility of the cost functions.Afterwards an experiment is carried out to testify these cost functions.Different factors include the intensity of the irradiance,the beam radius and the dazzling location of the laser are taken into consideration.The experimental result shows the cost functions have monotonous relationship with the degree of the laser dazzling.This result indicates that the cost functions can be used in the field to measure the degree of the laser dazzling.展开更多
基金supported by the National Key Scientific Instrument and Equipment Development Projects of China under Grant No.2012YQ040164
文摘Streak tube imaging lidar （STIL） is an active imaging system that has a high range accuracy with tile use of a pulsed lapser transmitter and streak tube receiver to produce 3D range inlages. This work investigates the effect of tile time bin size oil the range accuracy of STIL systems based on the peak detection algorithm. The nunlerical simulation indicates that the time bin size has a significant effect on the range aceuracy, resulting in a modified analytical estimate of the range error. An indoor experilnent with a planar target is carried out to validate the theory that shows the linear relationship between tile range error and the time bin size. Finer 3D depth iinages of a fist model are acquired by using a smaller time bin size and the best range error of 0.003 In is achieved with the optimal time bin size of 0.07 ns.
文摘The laser dazzling effect has always been a crucial issue for the scientific community.Nevertheless,the experiments to study the laser dazzling effect may cost a lot.Therefore,the technology of simulation is promising for this field.Additionally,the effectiveness of the laser dazzling needs to be evaluated by a no reference cost functions.A general model of CCD is proposed in this paper.Additionally,two cost functions are proposed to evaluate the image.The simulation result based on the model shows feasibility of the cost functions.Afterwards an experiment is carried out to testify these cost functions.Different factors include the intensity of the irradiance,the beam radius and the dazzling location of the laser are taken into consideration.The experimental result shows the cost functions have monotonous relationship with the degree of the laser dazzling.This result indicates that the cost functions can be used in the field to measure the degree of the laser dazzling.
