Study On The Response Characteristics Of High Sensitivity Array Detection System Under The Condition Of Extremely Weak Optical Signal

High sensitiVity array detection system is mainly μsed in the field of laser radar and PLIF imaging technology. Especially in long-range laser radar, the radar system to receiVe the echo signal is Very weak, in the practical application in the face of induced high sensitiVity array detection system mainly μsed in laser radar and PLIF imaging technology field. Especially in long-range laser radar, the radar system to receiVe the echo signal is Very weak, in the practical application of laser radar detection system put forward Very high requirements. In addition, due to the high speed PLIF imaging diagnostic instrument detection is extremely weak fluorescence signal and need to quickly and effectiVely detect the weak fluorescence signal and so on high sensitiVity array detection system characteristics were studied and is important to the deVelopment and innoVation of the system detection.This paper analyzes the like the noise characteristic of the intensifier, and a high-speed camera and understanding to each part of the system noise sources detection, and the whole detection system noise factor is analyzed.Design the experimental scheme of the measurement resolution system on the detection, build the parallel light tube experimental system, by μsing the LabVIEW software programming realized the detection system to collect the resolution of the board pictures read and bright dark fringe contrast calculation, detection system in the acquisition of information, the program while collecting pictures while reading fringe contrast function, conVenient adjμsting the detection system. Compared in the light of the different power and different Voltage gain detection system receiVes the resolution of the board pictures, were eValuated by means of calculation corresponding to the position of the light dark fringe contrast of different conditions to obtain the picture resolution.On the research of high sensitiVity array detection system under different gain gain response power characteristics, response characteristics of the design of the experimental scheme and to detect the response characteristics of the system are analyzed and summarized, the detection system of single photon magnitude signal detection method is introduced, to design the experiment scheme, single MCP detection system of single photon magnitude signal detection performance is analyzed.Simulation of dispersion phenomenon caμsed by the signal detection system to collect and remoVe the effect after μsing double diffμsion, the performance of MCP detector is stronger on the aboVe simulation results are Verified by double MCP detector, collecting a large number of Dan Guangzi magnitude images, on the spot centroid of single photon signal magnitude of each image acquisition remoVe the spot, finally get, will remoVe the speckle information after total resolution plate images through comparison and speckle processing detection system receiVed, that were remoVed by speckle of single photon signal magnitude, the cumulati Ve remoVal signal, speckle and improVe the information collected by the resolution of the conclμsion.