Aerospace Instrument-Making Annotation << Back ALGORITHMIC SECURITY AND EVALUATION OF THE RELIABILITY OF RECOGNITION OF SYMBOLIC TM INFORMATION IN TV IMAGES OF SPACE APPARATUS Yu.S. Sagdullaev, A.I. Smirnov The process of selection and recognition of symbolic telemetric (TM) information in television (TV) images of spacecrafts is associated with the formation of separate signals of images of symbolic TM information and TV image signals of the spacecraft, as well as fi xing changes in symbolic TM information. Such types of information in TV format can be used in the Space Flight Center for operational analysis, as well as for video registration and post-flight analysis. The article presents the developed algorithm of selection and recognition of symbolic TM information in TV images of spacecraft. In this algorithm, matrices of binary character patterns, found in TV images of spacecraft, are used. The use of binary templates allows you to improve performance and reduce the impact of noise. The algorithm of selection and recognition of symbolic TM information consists of several stages of processing image signals and includes: the choice of familiarity of symbols in the TV image, the preliminary processing of TV image signals, the selection of symbols for each familiarity, the recognition of images of letters and numbers, and the processing and recording of recognition results of a symbolic TM information. To increase the effi ciency of selection and recognition of symbolic TM information on the background of TV images of spacecraft with optimal contrast and ensuring the efficiency and quality of monitoring dynamic modes, including the approach mode, it is necessary to introduce preliminary processing of TV image signals including analog-to-digital conversion, gamma correction, inversion of signals, etc. Probabilistic situations of recognition of symbolic TM information in TV images of spacecraft are described. An expression is obtained for estimating the overall loss of reliability for all varieties of TM information symbols transmitted in TV images of the spacecraft. The evaluation of the reliability of recognition of symbolic TM information in TV images of spacecraft shows that the relative error of recognition of such a parameter as the relative range will be smaller with a positive increment of the error. The developed algorithm of selection and recognition of symbolic TM information in TV images of SC is aimed at creating devices and hardware and software,The developed algorithm for the selection and recognition of symbolic TM information in TV images of spacecraft is aimed at creating devices and hardware and software, the use of which can provide an improvement in the control efficiency of spacecraft missions when they approach the International Space Station. Keywords: spacecraft, convergence, television images, telemetry information, processing and separation of signals, selection and recognition of telemetry signals, information display. DOI: 10.25791/aviakosmos.10.2018.213 Contacts: E-mail: sagdul@mail.ru Pp. 11-19.