THE METHOD CONSISTENT ENERGY DETECTION OF RADIO SIGNALS WITH A PRIORI UNCERTAINTY OF THEIR DURATION

摘要

The method consistent energy detection of radio signals with a priori uncertainty of their duration, based on verifiable statistical hypotheses for the criterion of minimum average risk and uses energy likelihood ratio of considering the law of conservation of energy in the Bayesian approach, maximizing the use of a priori information and is to determine the ratio of fluid assessments of energy mix signal and noise analysis in the interval selected duration to values ​​averaged over the past several intervals noise analysis of energy during the period following the radio signals and comparing the energy likelihood ratio in each interval analysis of the decision threshold, defined by the criterion of Neyman-Pearson. Held several time channels determine the energy likelihood ratio intervals of analysis that are multiples of the length of the original interval analysis (or other law changes the length of the interval analysis) and selected subject to guaranteed (with given conditional probabilities of correct detection and false alarm) detection of radio preset energy and made Compare energy likelihood ratio in each time channel with a threshold decision, which is defined for each channel of varying duration analysis by the criterion of Neyman-Pearson and the decision to quasi-optimal detection signal for maximum value in the time interval of its provisions and adjustments in verifying optimal detection by exceeding the threshold for maximum energy likelihood ratio in the range of time equivalent to the range of possible fluctuations in the average energy level of internal noise and determine the duration of the detected signal by the number of exceedances in each time channel.