Discrete and Continuous Models and Applied Computational ScienceDiscrete and Continuous Models and Applied Computational Science2658-46702658-7149Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)8729Kuryshkin-Wodkiewicz QuantumMeasurement ModelZorinA VЛаборатория вычислительной физики и математического моделирования; Российский университет дружбы народов; Peoples Friendship University of Russiazorin@rudn.ruSevastianovL AКафедра систем телекоммуникаций; Российский университет дружбы народов; Peoples Friendship University of Russiasevast@sci.pfu.edu.ruPeoples Friendship University of Russia010320103.19810308092016Copyright © 2010,2010We show the coincidence of K. Wodkiewicz operational probability distribution function and V. Kuryshkin quantum distribution function. The correspondence of both functions to L. Cohen time-frequency spectrogram is shown.We discuss in brief the connection of investigated distribution functions with statistical model of quantum measurement theoryquantum distribution function,frequency-time spectrogramoperational approach to quantum measurement theoryчастотно-временная спектрограммаквантовая функция распределенияоперациональный подход к теории квантовых измерений