Костиря, О.О., Гризо , А.А., Додух , О.М. and Нарєжній , О.П. 2023. Mathematical Model of Two-Fragment Signal with Non-Linear Frequency Modulation in Current Period of Time. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia. 92 (Jun. 2023), 60-67. DOI:https://doi.org/10.20535/RADAP.2023.92.60-67.