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FALSE ALARM LEVEL STABILISATION WHILE DETECTING AN OBJECT IN THE BACKGROUND OF NON-GAUSSIAN NOISE

V. A. Belokurov, Ph.D. (Tech.), associate professor, radio technical systems department, Ryazan; This email address is being protected from spambots. You need JavaScript enabled to view it.

The task to calculate threshold detection level in the conditions of multi-frame accumulation of signals reflected from a small object in the background of non-Gaussian noise is considered. The aim of the work is to develop an analytical algorithm for calculating a detection threshold for multi-frame accumulation. The apparatus of characteristic functions to calculate the distribution density of sufficient statistics at the input of threshold device is proposed to be used. To assess the effectiveness, we compared detection thresholds calculated by the proposed algorithm and the thresholds calculated using simulation modeling for various values of non-Gaussian noise and false alarm probabilities.

Key words: characteristic function, numerical integration, rectangle method, probability distribution density and distribution function, gamma distribution.

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