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In the article the idea and the main implementation problem of a tactical ballistic missile (TBM) tracking chain are presented. The processing chain implements the Track-Before-Detect (TBD) method to confirm a TBM detection and as the next step an extended Kalman filter as a tracker is used. The structure of the system and the descriptions of the purpose of particular modules are presented in the paper. A complex data structure for storing of the measurements, the organizational data and the algorithms parameters has been designed in order to improve the computational effectiveness and use of system resources. The proposed data storing solution allows for the reduction of the amount of stored measurement data without a loss of tracking results quality. In the paper selected results of TBM tracking for different data organization solutions and different methods of the data amount reduction are presented.The TBM tracking chain enables the parallel computation in several modules. The design has been based on the following assumptions:· the computations are made in a selected part of the observed area, · in the TBD algorithm many models of rockets trajectory are considered, *