A frequency hopping pattern inspired bionic underwater acoustic communication

Qiao, Gang; Ma, Tianlong; Liu, Songzuo; Bilal, Muhammad

doi:10.1016/j.phycom.2021.101288

Cited by 22 publications

(16 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The HOWM signal for the l-th whistle is calculated by Eqs. (7) and (8). The mimicked signal (s (t)) in the m-th slot for the whole whistles is generated by combining L signals and is attained as…”

Section: B Hybrid-multiple Whistle Mimic Modulationmentioning

confidence: 99%

See 1 more Smart Citation

Mimicking Multiple Whale Whistles-Based Underwater Covert Communication

et al. 2022

View full text Add to dashboard Cite

In underwater biomimetic covert communications, multiple whale whistles are mimicked for improving covertness. The conventional mimicking methods suffered from the trade-off between the mimicking performance and the bit error rate (BER). In this paper, we propose a continuous phase-multiple chirp modulation (CP-MCM) and a hybrid orthogonal whistle modulation (HOWM) to improve the BER and the mimicking performance of the biomimetic covert communication with the multiple whistles. The proposed CP-MCM utilizes chirp signals as the carriers of transmission symbols to mimic the frequency contour of the whistles accurately. The proposed HOWM utilizes the conventional OFDM in the overlapping whistle regions to avoid the interferences and the CP-MCM in the nonoverlapping regions to attain the large mimicking performance. Computer simulations and practical ocean experiments demonstrated that the proposed HOWM mimicked the multiple whistles with better BER performance than conventional methods.

show abstract

Section: B Hybrid-multiple Whistle Mimic Modulationmentioning

confidence: 99%

“…Even if enemies receive the biomimetic communication signals, the enemies consider the signals as the aquatic creature sounds [1]. Since the whales are worldwide distributed and their whistle sounds are reached to a long distance, the whale whistle based biomimetic covert communication methods have been researched [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Mimicking Multiple Whale Whistles-Based Underwater Covert Communication

et al. 2022

View full text Add to dashboard Cite

show abstract

“…To evaluate the DoM, 1000 biomimicking whistles were generated using the model in Section 3 . These 1000 whistles were modulated with conventional methods (i.e., CV-CFM and TFSK [ 10 , 13 ] and FSK [ 6 , 7 , 8 ]) to compare the DoM performance of the proposed method with that of conventional methods. TFSK-modulated biomimicking whistles are mathematically the same signal as CV-CFM-modulated whistles [ 13 ].…”

Section: Evaluation Of Degree-of-mimic Performancementioning

confidence: 99%

“…Recently, a biomimetic communication method has been studied for military purposes. Biomimetic communication methods make the enemy confuse our communication signals with dolphin or whale sounds to achieve covertness [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. Traditional covert communication systems decrease the signal strength and hide the existence of the signal using various techniques (e.g., spread spectrum, chaotic modulation, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…Especially in studies of CV-CFM (based on PSK) and TFSK, the authors performed the mean-of-score (MOS) test and showed that humans could hardly distinguish a mimicking signal from a real dolphin whistle [ 11 , 12 , 13 , 14 ]. All of the conventional studies mimicked the whistle of small dolphins (such as white-sided dolphins utilizing tens of kilohertz sounds) and conducted ocean experiments at a short range within 5 km [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. However, considering the operation area of military-purpose underwater vehicles from tens to hundreds of km, biomimetic communication should support long ranges.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Long-Range Biomimetic Covert Communication Method Mimicking Large Whale

Ahn

Kim

2022

Sensors

View full text Add to dashboard Cite

Short-range biomimetic covert communications have been developed using dolphin whistles for underwater acoustic covert communications. Due to a channel characteristics difference by range, the conventional short-range methods cannot be directly applied to long-range communications. To enable long-range biomimicking communication, overcoming the large multipath delay and a high degree of mimic (DoM) in the low-frequency band is required. This paper proposes a novel biomimetic communication method that preserves a low bit-error rate (BER) with a large DoM in the low-frequency band. For the transmission, the proposed method utilizes the time-dependent frequency change of the whistle, and its receiver obtains additional SNR gain from the multipath delay. Computer simulations and practical ocean experiments were executed to demonstrate that the BER performance of the proposed method is better than the conventional methods. For the DoM assessment, the novel machine learning-based method was utilized, and the result shows that the whistles generated by the proposed method were recognized as the actual whistle of the right humpback whale.

show abstract

Biologically inspired underwater acoustic communication based on discrete cosine transform

Qiao

Liu

et al. 2022

Applied Acoustics

View full text Add to dashboard Cite

A frequency hopping pattern inspired bionic underwater acoustic communication

Cited by 22 publications

References 18 publications

Mimicking Multiple Whale Whistles-Based Underwater Covert Communication

Mimicking Multiple Whale Whistles-Based Underwater Covert Communication

The Long-Range Biomimetic Covert Communication Method Mimicking Large Whale

Biologically inspired underwater acoustic communication based on discrete cosine transform

Contact Info

Product

Resources

About