Utilizing orthogonal coprime signals for improving broadband acoustic Doppler current profilers
Broadband acoustic Doppler current profilers (BBADCPs) are instruments that are widely
used for measuring ocean currents. The ambiguity velocity of the conventional method used …
used for measuring ocean currents. The ambiguity velocity of the conventional method used …
Improved velocity estimation method for Doppler sonar based on accuracy evaluation and selection
Y Yang, S Fang - Journal of Marine Science and Engineering, 2021 - mdpi.com
The matched filtering method and the waveform-tracking method cannot maintain optimal
velocity estimation performance all of the time. In order to solve this problem, this paper …
velocity estimation performance all of the time. In order to solve this problem, this paper …
Mitigation method of acoustic doppler velocity measurement bias
X Li, D Sun, Z Cao - Ocean Engineering, 2024 - Elsevier
A Doppler velocity log (DVL) is used to estimate ship's velocity by processing seafloor echo.
The velocity measurement bias (ie, long term accuracy) is often regarded as an important …
The velocity measurement bias (ie, long term accuracy) is often regarded as an important …
Strong scattering targets separation based on fractional Fourier transformation in pulse-to-pulse coherent acoustical Doppler current profilers
J Cui, Z Li, Q Li - IEEE Journal of Oceanic Engineering, 2018 - ieeexplore.ieee.org
The influence of the strong scattering targets (SSTs) on the flow cell velocities, ie, the fish-
bias effect, is a common phenomenon existing widely in real-time measurements of ocean …
bias effect, is a common phenomenon existing widely in real-time measurements of ocean …
Robust resolution of velocity ambiguity for multifrequency pulse-to-pulse coherent Doppler sonars
Pulse-to-pulse coherent Doppler sonars are widely used to explore boundary layer
characteristics of oceans. Multifrequency pulse-to-pulse coherent Doppler sonars have been …
characteristics of oceans. Multifrequency pulse-to-pulse coherent Doppler sonars have been …
Robust Chinese Remainder Theorem–Based Synthetic Aperture Sonar Motion Estimation
C Chi, S Chen, R Zhong, P Zhang… - IEEE Journal of …, 2024 - ieeexplore.ieee.org
Motion estimation is required to obtain high imaging quality in synthetic aperture sonars
(SASs). Displaced phase center antenna (DPCA) micronavigation is an important technique …
(SASs). Displaced phase center antenna (DPCA) micronavigation is an important technique …
Estimating AUV Motion Using a Dual-Sided Synthetic Aperture Sonar
The navigation and localization of autonomous underwater vehicles (AUVs) in complex
underwater environments are challenging. Synthetic aperture sonar (SAS) can provide a …
underwater environments are challenging. Synthetic aperture sonar (SAS) can provide a …
[PDF][PDF] 浅水域的高频宽带ADCP 系统
李佳润, 陈世利 - 电子测量与仪器学报, 2023 - jemi.cnjournals.com
浅水域测流可以促进防洪灌溉等水利工程的发展. 宽带多普勒剖面流速仪(acoustic Doppler
current profiler, ADCP) 可以精确监测水域的流层流速信息. 应用于浅水域测流的宽带ADCP …
current profiler, ADCP) 可以精确监测水域的流层流速信息. 应用于浅水域测流的宽带ADCP …
Suppressing interference from sidelobe coupling in phased-array acoustic Doppler velocimetry based on correlation delay optimization
D Li, Z Cao - Remote Sensing Letters, 2024 - Taylor & Francis
Velocity information is important for describing the motion state of an object. Modern
underwater navigation systems use the Doppler effect to extract the absolute velocity to the …
underwater navigation systems use the Doppler effect to extract the absolute velocity to the …
Improving broadband acoustic Doppler current profiler with orthogonal coprime pulse pairs and robust Chinese remainder theorem
Broadband acoustic Doppler current profilers (ADCPs) are instruments that are widely used
in underwater observation. However, conventional broadband ADCPs face the problem of …
in underwater observation. However, conventional broadband ADCPs face the problem of …