Detection of signals of moving objects based on the time selection method
https://doi.org/10.29235/1561-8358-2021-66-3-335-342
Abstract
To increase the efficiency of detecting moving objects in radiolocation, additional features are used, associated with the characteristics of trajectories. The authors assumed that trajectories are correlated, that allows extrapolation of the coordinate values taking into account their increments over the scanning period. The detection procedure consists of two stages. At the first, detection is carried out by the classical threshold method with a low threshold level, which provides a high probability of detection with high values of the probability of false alarms. At the same time uncertainty in the selection of object trajectory embedded in false trajectories arises. Due to the statistical independence of the coordinates of the false trajectories in comparison with the correlated coordinates of the object, the average duration of the first of them is less than the average duration of the second ones. This difference is used to solve the detection problem at the second stage based on the time-selection method. The obtained results allow estimation of the degree of gain in the probability of detection when using the proposed method.
About the Authors
V. M. Artemiev
Institute of Applied Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Valentin M. Artemiev – Corresponding Member of National Academy of Sciences of Belarus, Dr. Sc. (Engineering), Professor, Chief Researcher, Institute of Applied Physics of the National Academy of Sciences of Belarus
16, Akademicheskaya Str., 220072, Minsk
S. M. Kostromitsky
Radio Engineering Center of the National Academy of Sciences of Belarus
Belarus
Belarus
Sergei M. Kostromitsky – Corresponding Member of National Academy of Sciences of Belarus, Dr. Sc. (Engineering), Professor, Director of the Radio Engineering Center of the National Academy of Sciences of Belarus
15/5, suite 420, P. Brovka Str., 220072, Minsk
A. O. Naumov
Institute of Applied Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Alexander O. Naumov – Ph. D. (Physics and Mathematics), Head of the Laboratory, Institute of Applied Physics of the National Academy of Sciences of Belarus
16, Akademicheskaya Str., 220072, Minsk
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