Study On Hyperspectral Imaging System Of Large Field Of View Using Optomechanical Scanning

Due to a number of characteristics of hyperspectral,hyperspectral showed very high application value in areas such as military,vegetation,agriculture,geological research.The field of view is one of the important factors that affect the efficiency of hyperspectral remote sensing.Previous hyperspectral systems usually use many hyperspectral imagers joining together to achieve the large field of view.This design makes the whole hyperspectral system there exist lots of problems like complex structure,large weight,high cost and so on.This topic puts forward a imaging system based on optomechanical scanning,which can obtain high quality of hyperspectral image and achieve the large field of view by sweeping.This essay first introduces the basic structure and working principle of hyperspectral imager.In the process of aerial remote sensing,we should not only realize sweeping but also realize image motion compensation of flight direction.So this paper takes a design scheme of compound sweep stability control.Combining with the demand and the present condition of the current technology,the design target of the system is put forward.Develop a hyperspectral imaging submodule,including spectral system design,choosing the probe,etc.Detailed discuss the hardware and software implementation of compound sweep stability control,including the design of the motor,the design of the circuit of TMS320F2812,etc.At last,the whole hyperspectral system is tested.By means of laboratory the drive internal integration of the current loop speed loop PID control test is carried out.Test the function of sweeping,stability control and image motion compensation.Using the flight simulation platform to simulate the real flight condition.Then put the whole hyperspectral system in the condition and imaging and analyze the imaging results.