Underwater Communication (153 results)

Paperback. Condition: Very Good. Grade 3 out 5 points. This is a used book. Book has wear on cover and pages. May have personalized notes/names, stickers/labels. Has no markings on pages. May not include extra materials like access codes, CDs, accessories, etc. All orders ship by next business day! We are a small company and very thankful for your business. …

Paperback. Condition: Very Good. No Jacket. May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less.

Soft cover. Condition: Very Good.

Condition: New.

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Paperback. Condition: Good. 0916622304 Good; Softcover; 2nd Edition; 1984, Princeton Book Review; Covers creased & worn; Inside clean & unmarked; "Underwater Communication: Hand Signals for Scuba Diving.

Hardcover. Condition: Brand New. 300 pages. 8.66x0.79x11.14 inches. In Stock.

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Taschenbuch. Condition: Neu. Neuware - Join Maya, a gentle and kind-hearted manatee, on a peaceful underwater journey through a quiet part of the ocean where sounds gently travel through the water like soft whispers. One day, Maya discovers a beautiful 'echo song' that repeats softly across the coral reefs. Curious ocean friends try to sing, but some feel shy, while others don't listen closely enough to hear the rhythm of the sea. With patience and kindness, Maya teaches her friends how to slow down, listen carefully, and respond with their own gentle voices. As they practice together, the ocean begins to fill with a calming harmony of echoes-showing that listening and speaking with care can bring everyone closer together. This soothing bedtime story supports social-emotional learning (SEL) for children ages 3-7: - Build active listening and communication skills- Encourage patience and focus- Develop confidence in self-expression- Strengthen cooperation and group harmony- Support emotional awareness and connectionPerfect for bedtime reading, classroom learning, and calm wind-down moments, this gentle ocean story nurtures early communication skills through a peaceful underwater musical adventure.…

Taschenbuch. Condition: Neu. Neuware -Master's Thesis from the year 2014 in the subject Engineering - Naval Engineering, Ocean Engineering, , course: Electronics Systems Design, language: English, abstract: The existing underwater acoustic modems are designed for deep oceans and long range communication leading to immense consumption of power and high cost. These long range underwater acoustic modems are not suitable choice for deployment in underwater sensor networks, Hence the problem was chosen to design and develop a underwater acoustic modems that operates in shallow waters of depth below 100m and for a short range of below 100 m. Underwater wireless sensor network is contemporary technology that can be applied in the fields of security, surveillance, military, commercial, industrial and environmental. The major drawback is that the traditional underwater acoustic modems cannot be deployed for underwater sensor networks. This work focusses on the research and development of the underwater acoustic modem for shallow waters and short range communication. The relevant background theory required understand acoustics and for modelling the unique characteristics of the underwater channel is described in detail. Different concepts to model and implement the functionalities of the transmitter and receiver were explored, while converging to the most suitable choice of concepts. The modelled system is simulated for different channel conditions such as depth, range and induced ambient noise. The results were analysed in order to conclude the performance outcome of the system. The modelled system can efficiently operate for a depth of 30m, 50m and 70m for a range up to 50m. The hardware was developed using minimum number of components as a proof of concept for efficient data transmission and reception using acoustic signals. The hardware was tested to operate efficiently in air, however hardware tests for underwater is suggested for future work, which wi 92 pp. Englisch.…

Condition: New. 2026. hardcover. . . . . . Books ship from the US and Ireland.

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Hardcover. Condition: Brand New. 300 pages. 8.66x0.79x11.14 inches. In Stock.

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Condition: New. 2026. hardcover. . . . . .

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Paperback. Condition: New.

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Condition: As New. Unread book in perfect condition.

Taschenbuch. Condition: Neu. Druck auf Anfrage Neuware - Printed after ordering - Dropping a multi-million-dollar telecommunication line blindly into the ocean is a recipe for instant severing. The seabed is not a flat, sandy expanse; it is a hostile, highly dynamic geological environment featuring jagged mountain ranges, caustic hydrothermal vents, and sudden, devastating underwater avalanches known as turbidity currents. Surviving this terrain requires meticulous mapping.Before a single inch of glass fiber touches the water, survey vessels spend months bouncing acoustic sonar off the abyssal plain to generate high-resolution bathymetric maps. Engineers must thread the needle, plotting a route that avoids tectonic fault lines where seismic tremors could guillotine the line, while simultaneously navigating around deep-sea trenches that exceed the physical crush depth of the cable's armor. A miscalculation in tension or slack during deployment can leave the line suspended over a chasm, vibrating itself to death in deep-sea currents.Chart the most treacherous terrain on Earth. Understand the complex interplay of marine geology, sonar mapping, and geotechnical engineering that determines the physical path of the global internet.…

Taschenbuch. Condition: Neu. Druck auf Anfrage Neuware - Printed after ordering - The moment a drone submerges, the standard rules of wireless communication cease to exist. Traditional radio and Wi-Fi signals are almost instantly absorbed by saltwater, leaving Autonomous Underwater Vehicles (AUVs) completely deaf and blind in the abyss. To coordinate deep-sea mapping or pipeline inspections, marine robotics must rely on the slow, distorting medium of sound.Acoustic modems translate digital commands into complex chirps and pings, but pushing data through a fluid environment is a logistical nightmare. The speed of sound underwater is not constant; it drastically bends and refracts based on shifting temperatures, salinity levels, and pressure zones known as thermoclines. A signal fired straight ahead might curve sharply toward the surface or bounce erratically off the seabed. Engineers must program subsea drones with advanced fluid dynamic algorithms to predict these acoustic distortions and successfully decipher the echoing, delayed telemetry.Tune into the frequencies of the deep. Decipher the severe physical limitations of underwater wireless communication and the acoustic engineering required to command robotics in the dark. …

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