Monografiya posvyashchena voprosam obrabotki signalov v slozhnykh sistemakh, funktsionirovanie kotorykh trebuet uchastie cheloveka i proiskhodit v usloviyakh vozdeystviya pomekh. Rassmatrivayutsya voprosy obrabotki akusticheskikh signalov, v chastnosti, rechevykh signalov, obespechivayushchikh povyshenie dostovernosti vospriyatiya peredavaemoy informatsii, rassmatrivayutsya voprosy postroeniya modeley signalov i pomekh, vklyuchaya modeli ekho-signalov. Issleduyutsya zadachi vosstanovleniya plotnosti veroyatnostey, korrelyatsionnye i spektral'nye funktsii, momenty i spektry vysokogo poryadka, nelineynye sistemy Vol'terra. Predstavlen metod obobshchennoy lokal'noy approksimatsii i identifikatsii modeley i sistem s medlenno izmenyayushchimisya parametrami. Monografiya prednaznachena dlya inzhenerov, aspirantov, spetsializiruyushchikhsya v oblasti informatsionno-upravlyayushchikh sistem, a takzhe dlya studentov vuzov sootvetstvuyushchikh spetsial'nostey.