Research On CCD Vertical Target Compound Trigger Technology

The CCD vertical target system,as an important parameter for testing the firing accuracy and vertical target density of weapon system,has been applied more and more widely because of the high accuracy,stable and reliable operation and simple operation.When the CCD vertical target is tested,the muzzle trigger is used as the trigger source to control the acquisition and processing of the projectile image by the CCD target system.For long distance target test,after the trigger output trigger signal,the projectile still need a long time to get through the CCD vertical target system,which makes the testing system to collect a large amount of redundant data,not only reduces the efficiency of the system,and it is easy to produce leakage test,false alarm phenomenon,affect the accuracy and reliability of test results,therefore a study for different testing distance of CCD vertical target trigger technology is very necessary.This paper first analyzes the existing trigger mode and the trigger device,according to reasons caused by redundant data acquisition and processing,the large amount of leakage and the false alarm phenomenon is studied,based on the research,developed based on support vector machine(SVM)and DS evidence theory of information fusion and multi detector methods.This method is based on the muzzle flame detector,the shock-wave detector and the sky screen target,using support vector machine theory of initial speed,target speed,flight time and other parameters were measured on the classification and identification of projectile,projectile is estimated from a number of information based on the detection data of evidence.Secondly,the use of DS evidence theory to pass more evidence for the support vector machine(SVM)classification of weighted fusion,measured the projectile is obtained based on new evidence,measured the projectile will transmit information to the decision center,provide the projectile appear time to CCD vertical target controller area,implementation of composite trigger.Finally,set up a platform composite trigger test,respectively based on support vector machine(SVM)and DS evidence theory of compound trigger simulation validation test,as well as the visual distance of the flame detector performance verification test,the test data for the collection and analysis.The experiment and simulation results show that the designed visual remote flame detector can realize reliable detection at long distance.By combining support vector machine(SVM)and DS evidence theory of compound trigger probe information fusion method can more reliable control of CCD vertical target system in the amount of data,reduce the rates of missing and must be approved by the system,improve the accuracy and reliability of the test data.