A relationship between the waveguide invariant and wavenumber integration.
نویسندگان
چکیده
The waveguide invariant is typically defined using of normal modes or ray theory, but it can also be related to the wavenumber-integration method for calculating the acoustic field in a waveguide. In this letter, the Wiener-Khinchin Theorem is used to show that the autocorrelation of the wavenumber-integration kernel, when plotted versus wavenumber difference and frequency, contains striations that can be described by the waveguide invariant.
منابع مشابه
Understanding and utilizing waveguide invariant range - frequency striations in ocean acoustic waveguides
Much of the recent research in ocean acoustics has focused on developing methods to exploit the effects that the sea surface and seafloor have on acoustic propagation. Many of those methods require detailed knowledge of the acoustic properties of the seafloor and the sound speed profile (SSP), which limits their applicability. The range-frequency waveguide invariant describes striations that of...
متن کاملRelationship Between Psychological Symptoms, Age, Severity of Symptoms, and Societal Integration in Patients With Facial Nerve Paralysis
Objectives: Facial Nerve Paralysis (FNP) may cause disfigurement of the face, which result in psychological disturbances and isolation because of society’s reaction to people’s physical appearance. This study aimed to determine the relationship between psychological symptoms, age, the severity of symptoms, and societal integration in people with FNP. Methods: The present research is a cross-se...
متن کاملThe Interactive Relationship between Regional Trade Integration and Foreign Direct Investment
E conomic integration among countries has continued to deepen over the past decade. This is especially visible at the regional level, with the escalation of Regional Integration Agreements (RIAs) ranging from Free Trade Areas (FTAs) to Customs Unions (CUs). Nowadays, many developing countries have entered a new regional integration agreement with developed and developing countries. S...
متن کاملDetection of Copy-Move Forgery in Digital Images Using Scale Invariant Feature Transform Algorithm and the Spearman Relationship
Increased popularity of digital media and image editing software has led to the spread of multimedia content forgery for various purposes. Undoubtedly, law and forensic medicine experts require trustworthy and non-forged images to enforce rights. Copy-move forgery is the most common type of manipulation of digital images. Copy-move forgery is used to hide an area of the image or to repeat a por...
متن کاملTheory of sound propagation from a moving source in a three-layer Pekeris waveguide
A theory is developed for the acoustic field in a three-layer waveguide, representing the atmosphere, shallow ocean and sediment. The unaccelerated source is moving horizontally in the atmosphere. Two solutions are presented. The first, for a line source normal to the direction of travel, is a single wavenumber integral yielding the two-dimensional 2-D field in each layer; and the second, for a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The Journal of the Acoustical Society of America
دوره 128 1 شماره
صفحات -
تاریخ انتشار 2010