High-performance ATP Technology Research Base On CMOS Detector In Turbulence Channel

ATP(acquisition,tacking and pointing)is the key of stability of FSO system,and become the current hot spot in the space optical communication.This article build on an near-earth turbulence project,embarks from the turbulent channel high-performance ATP technology,the main purpose of research is:study with the quickly capture and performance tracking ATP technology,then Put forward A high performance light detection and control algorithm.This paper mainly completed the following:1)The paper carriy out the ATP technology dynamic analysis at domestic and foreign,Combed the ATP technology development in the problems at present,According to the application requirements,then determine paper research goal.2)Analyze the main factors of affecting the ATP system performance: research the turbulent channel how to affect the light spot detection;analyzed the main error sources when light spot detection,and analyze the noise impact on the performance of the ATP system;analyze platform jitter on the ATP system performance impact;Determines ATP system performance index.3)Paper carry out turbulent ATP system important scheme design,mainly includes: complete ATP Scan capture and tracking project design which based on the CMOS adaptive open windows function;complete CMOS detector denoising algorithm analysis and design;complete light spot centroid algorithm analysis and design.Then through simulation validation performance of tracking and light spot denoising algorithm.4)Based on the Altera Cyclone FPGA chip,complete ATP Master control module and Light detection module design and implementation.Then through experiment validation the feasibility and effectiveness of the paper designs.5)Builds 10 KM turbulent channel wireless optical communication transceiver experiment platform,To verify the system performance,Verification results show that : The system complete implementation ATP Scan capture and tracking function which based on the CMOS adaptive open windows,and successfully build two-way link,complete the communication.Coarse tracking precision is higher than 24 ?rad,Coarse tracking bandwidth up to 1KHZ and precision is higher than 10 ?rad.System under the precondition of 155 m bit rate,24 hour communication ber in a 10-7 level.