Cинтез та аналіз ефективності робастних алгоритмів виявлення випадкових сигналів в негауссових завадах
DOI:
https://doi.org/10.18372/1990-5548.61.14206Ключові слова:
обробка сигналів, робастні алгоритми, виявлення радіолокаційного сигналу, хаотична імпульсна перешкода, апріорна невизначеністьАнотація
У статті розглянуто проблему синтезу робастних після детекторних алгоритмів виявлення випадкових радіолокаційних сигналів на тлі некорельованого шуму та хаотичних імпульсних перешкод. Розглянуто два випадки апріорної невизначеності: 1) випадковий модульований гармонічний радіолокаційний сигнал з випадковою амплітудою, розподіленою за законом Гаусса з відомими параметрами; 2) випадковий модульований гармонічний радіолокаційний сигнал з невідомим законом розподілу амплітуди. Проблема вирішується з використанням редукції Вальда. Синтез робастного алгоритму виявлення сигналу на тлі хаотичних імпульсних перешкод здійснювався за допомогою моделі «забруднення» Тьюкі. Ефективність та робастність декількох синтезованих робастних алгоритмів виявлення досліджується методом Монте–Карло.
Посилання
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