Estimation of the Stability of Acoustic Multipath in Long-Range Propagation
スポンサーリンク
概要
- 論文の詳細を見る
We present the stability estimation results of the data collected during the sound transmission experiment performed by Japan Marine Science and Technology Center (JAMSTEC) in 1996 in the western equatorial Pacific Ocean. The combined information of the amplitude and the phase was effective for identifying a ray and observing the ocean-structure change. The phases of correlated signals were very stable within 50 s not only for the paths propagated near the sound fixing and ranging (SOFAR) axis but for ones turning at about 2500 m depth. The travel time could be estimated within an error of less than 0.3 ms.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 2001-05-30
著者
-
HACHIYA Hiroyuki
Department of Information & Image Sciences, Chiba University
-
NAKANO Iwao
Japan Marine Science and Technology Center
-
MIYAKAWA Yutaka
Department of Information & Image Sciences, Chiba University
-
NAKAMURA Toshiaki
Japan Marine Science and Technology Center
-
Hachiya Hiroyuki
Department of Information & Image Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
-
Nakano Iwao
Japan Marine Science and Technology Center, Yokosuka 237-0061, Japan
関連論文
- Estimation of Correlation of Acoustic Reciprocal Transmissions Using Central Equatorial Pacific Tomography Data
- Estimation of the Travel Time Using the New Measurement Technique for Long-range Transmission
- Estimation of the Stability of Acoustic Reciprocal Transmission in Long-Range Propagation at the Central Equatorial Pacific
- Estimation of the Stability of Acoustic Multipath in Long-Range Propagation
- Estimation of the Stability of Acoustic Multipath in Long-Range Propagation at the Western Equatorial Pacific
- Numerical Analysis of Underwater Acoustic Lens Using Wide-Angle Parabolic Equation Method
- Measurement of Acoustic Property Distributions of Diseased Heart and Liver Tissues
- Development of an Acoustic Lens for an Imaging Sonar for Autonomous Underwater Vehicle "Urashima" and Experimentation in a Water Tank(Instrumentation, Measurement, and Fabrication Technology)
- Experiments for Acoustic Digital Data Communication Using Frequency Shift Keying Modulation
- Extraction of Quantitative Three-Dimensional Information from Ultrasonic Volumetric Images of Cirrhotic Liver
- Monitoring the Kuroshio Extension with Dynamically constrained Synthesis of the Acoustic Tomography, Satellite Altimeter and in situ Data
- Numerical Analysis of Acoustical Propagation Characteristics in Central Equatorial Pacific Ocean with Ridges of Seabed Used by Three-Dimensional Parabolic Equation Method
- Examination of the Spatial Correlation of Statistics Information in the Ultrasonic Echo from Diseased Liver
- Measurement of Acoustic Property Distributions of Diseased Heart and Liver Tissues
- Estimation of Characteristics of Echo Envelope Using RF Echo Signal from the Liver
- Engineering Ethics
- Estimation of the Travel Time Using the New Measurement Technique for Long-range Transmission
- The Japan Society of Ultrasonics in Medicine amidst the information technology revolution
- Precise Measurement of Travel Time Difference for Acoustic Reciprocal Transmission
- Variation of Underwater Noise in the Tomography Experiments at the Central Pacific
- Estimation of the Scatterer Distribution of the Cirrhotic Liver using Ultrasonic Image
- Acoustic Imaging for Archaeological Investigations Using Wavelet Transform
- Analysis of Tidal Effect on Reciprocal Sound Propagation in Central Pacific Ocean
- Development of Ultrasonic Multiple Access Method Based on $M$-Sequence Code
- Three-Dimensional Model of the Scatterer Distribution in Cirrhotic Liver
- Estimation of the Stability of Acoustic Multipath in Long-Range Propagation
- High-Accuracy Measurement of Small Movement of an Object behind Cloth Using Airborne Ultrasound
- Doppler Velocity Estimation Based on Spectral Characteristics of M-Sequence-Modulated Signals in Ultrasonic Measurement for Moving Objects
- Modeling of the Cirrhotic Liver Considering the Liver Lobule Structure
- A New Modeling for the Changes in the Distribution of Scatterers in Cirrhotic Liver