Research On The Laser Visual Axis Rapid, Precision Detection Technology Based On QD

Space Optical Communication with the high rate of transmission,and big communications capacity,reliability,anti-interference capability,small size,light weight adva -ntages gained favor.In the space optical communication system,APT is the basis of the space optical communications.To the laser visual axis rapid,precision detection technology as a key technology of the APT system,and its importance is selfevident.The Paper realized a laser visual axis rapid,precision detection system based on QD.The system consists of signal preprocessing modules,data acquisition and transmission modules and PC monitor modules.Optimization System has been selected QD preamplifier circuit,signal preprocessing circuit,analog-digital conversion circuits a -nd control circuits and digital signal processing technology,and impact to the axis o -f laser detection speed and accuracy of the factors for a more detailed analysis.It realized an accuracy of better than 0.6μrad and a detection speed better than 5kHz in the laser visual axis detection,while the field of view is 200μrad.