Motion parameter estimation of AUV based on underwater acoustic Doppler frequency measured by single hydrophone

Rong, Shaowei; Xu, Yu

doi:10.3389/fmars.2022.1019385

Cited by 2 publications

(2 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Without this, at certain speeds, it is practically impossible to receive the transmitted data. The knowledge of the Doppler is also required in underwater navigation and localization systems [5] as well as in motion parameter estimation of autonomous underwater vehicles [6]. In the vast majority of cases, chirp signals [7], especially linear [8] - [10] or hyperbolic [11], [12], are used to determine the Doppler shift.…”

Section: Volume XX 2017mentioning

confidence: 99%

Comparison of Doppler Effect Estimation Methods for MFSK Transmission in Multipath Hydroacoustic Channel

Czapiewska,

Łuksza,

Studański

et al. 2024

IEEE Access

View full text Add to dashboard Cite

Underwater wireless communication remains a challenging topic, particularly for applications such as wreck penetration where multipath and Doppler effects are very intense. These effects are becoming even more difficult to mitigate for fast data transmission systems that utilize wideband signals. Due to the low propagation speed of acoustic wave in the water, there is a significant difference between the Doppler shift for lower and upper frequencies of the utilized spectrum. To address these challenges, this paper describes various methods for determining the Doppler frequency shift for MFSK signals, including crosscorrelation, double FFT, pilots, and additional Up-Down chirp signals. The reception quality of the transmitted data in a real environment was used as an evaluation criterion for each method. The tests were carried out in motion within the towing tank for different movement speeds of the transmitter relative to the receiver. The tank's limited dimensions created conditions for multipath signal propagation. Under very difficult multipath signal propagation conditions, the pilots method was found to be the most effective. It gave over two times lower BER than the well-known Up-Down chirp method.

show abstract

Section: Volume XX 2017mentioning

confidence: 99%

Comparison of Doppler Effect Estimation Methods for MFSK Transmission in Multipath Hydroacoustic Channel

Czapiewska,

Łuksza,

Studański

et al. 2024

IEEE Access

View full text Add to dashboard Cite

show abstract

“…At present, using acoustic waves is the only method for detecting over long distances in seawater (Zhang et al, 2020;Miao et al, 2021a;Miao et al, 2021b). Underwater acoustic technology has become indispensable ocean observation, exploration, and exploitation (Xing et al, 2021;Zhang et al, 2021;Rong and Xu, 2022). The development of underwater acoustic technology is based on accurate prediction of underwater acoustic wave propagation (Zhou et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Inversion of shallow seabed structure and geoacoustic parameters with waveguide characteristic impedance based on Bayesian approach

Zhu

Xue²,

Ren³

et al. 2023

Front. Mar. Sci.

View full text Add to dashboard Cite

Underwater acoustic technology is essential for ocean observation, exploration and exploitation, and its development is based on an accurate predication of underwater acoustic wave propagation. In shallow sea environments, the geoacoustic parameters, such as the seabed structure, the sound speeds, the densities, and the sound speed attenuations in seabed layers, would significantly affect the acoustic wave propagation characteristics. To obtain more accurate inversion results for these parameters, this study presents an inversion method using the waveguide characteristic impedance based on the Bayesian approach. In the inversion, the vertical waveguide characteristic impedance, which is the ratio of the pressure over the vertical particle velocity, is set as the matching object. The nonlinear Bayesian theory is used to invert the above geoacoustic parameters and analysis the uncertainty of the inversion results. The numerical studies and the sea experiment processing haven shown the validity of this inversion method. The numerical studies also proved that the vertical waveguide characteristic impedance is more sensitive to the geoacoustic parameters than that of single acoustic pressure or single vertical particle velocity, and the error of simulation inversion is within 3%. The sea experiment processing showed that the seabed layered structure and geoacoustic parameters can be accurately determined by this method. The root mean square between the vertical waveguide characteristic impedance and the measured impedance is 0.38dB, and the inversion results accurately represent the seabed characteristics in the experimental sea area.

show abstract

Motion parameter estimation of AUV based on underwater acoustic Doppler frequency measured by single hydrophone

Cited by 2 publications

References 45 publications

Comparison of Doppler Effect Estimation Methods for MFSK Transmission in Multipath Hydroacoustic Channel

Comparison of Doppler Effect Estimation Methods for MFSK Transmission in Multipath Hydroacoustic Channel

Inversion of shallow seabed structure and geoacoustic parameters with waveguide characteristic impedance based on Bayesian approach

Contact Info

Product

Resources

About