This paper investigates applications and challenges at that point a pick up submerged sensor at that point a pick up networks. We highlight potential applications to off-shore oilfields at that point a pick up seismic monitoring, hardware monitoring, and submerged robotics. We identify relook headings in short- range acoustic communications, MAC, time synchronization, and limitation conventions at that point pick up high-idleness acoustic networks, long- length of time framework sleeping, and application-level data scheduling. We depict our preparatory arrangement on short-run acoustic correspondence hardware, and summarize results of high-idleness time synchronization.

Underwater Sensor Network, Physical Layer, Synchronization

[1] Yu Yang ; Coll. Of Marine, Northwestern Polytech. Univ., Xi''an ; Zhang Xiaomin ; Peng Bo ; Fu Yujing, “Design of sensor nodes in underwater sensor networks”, Published in: Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on Date of Conference: 25-27 May 2009 Page(s): 3978 – 3982
[2] Dharan, K.T. ; SITE, VIT Univ., Vellore, India ; Srimathi, C. ; Soo-Hyun Park, “A sweeper scheme for localization and mobility prediction in underwater acoustic sensor networks”, Published in: OCEANS 2010 IEEE – Sydney Date of Conference: 24-27 May 2010 Page(s): 1 – 7.
[3] Donghoon Kim ; Dept. of Comput. Sci., Florida State Univ., Tallahassee, FL ; Yong-Man Cho ; Changhwa Kim ; Sangkyung Kim, “E-ITRC Protocol with Long & Adjustable Range on Underwater Acoustic Sensor Network”, Published in: Advanced Information Networking and Applications Workshops, 2007, AINAW '07. 21st International Conference on (Volume:2 ) Date of Conference: 21-23 May 2007 Page(s): 665 – 672.
[4] Peng Jiang ; Syst. Eng. Res. Inst., CSSC, Beijing, China, “An underwater sensor network localization algorithm based on Time-of-Arrivals (TOAs)”, Published in: Natural Computation (ICNC), 2013 Ninth International Conference on Date of Conference: 23-25 July 2013 Page(s): 1552 – 1556.
[5] Yujun Li ; Sch. of Comput. Sci. & Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China ; Yaling Yang, “Notice of Retraction Deliverability of greedy routing in underwater sensor networks”, Published in: Computer Engineering and Technology (ICCET), 2010 2nd International Conference on (Volume:2 ) Date of Conference: 16-18 April 2010 Page(s): V2-130 - V2-134.
[6] Chavhan, J.W. ; Dept. of Electron. Eng., K.D.K. Coll. of Eng., Nagpur, India ; Sarate, G.G., “Smart Antenna approach in underwater Acoustic Sensor Network using OFDM: A review”, Published in: Green Computing, Communication and Conservation of Energy (ICGCE), 2013 International Conference on Date of Conference: 12-14 Dec. 2013 Page(s): 155 – 158.
[7] Yildirim, K.S. ; Dept. of Comput. Eng., Ege Univ., Izmir, Turkey ; Kantarci, A., “External Gradient Time Synchronization in Wireless Sensor Networks”, Published in: Parallel and Distributed Systems, IEEE Transactions on (Volume:25 , Issue: 3 ) Page(s): 633 – 641 ISSN : 1045-9219.
[8] Hyungu Hwang ; Mobile Telecommun. Res. Div., Electron. & Telecommun. Res. Inst., Daejeon, South Korea ; Daeho Kim, “Practical Time Synchronization for OFDM Systems on Mobile Channel”, Published in: Computer Communications and Networks (ICCCN), 2012 21st International Conference on Date of Conference: July 30 2012-Aug. 2 2012 Page(s): 1 – 5.
[9] Jie Wu ; Sch. of Electron. Inf. Eng., Tianjin Univ., Tianjin, China ; Liyi Zhang ; Yu Bai ; Yunshan Sun, “Cluster-Based Consensus Time Synchronization for Wireless Sensor Networks”, Published in: Sensors Journal, IEEE (Volume:15 , Issue: 3 ) Page(s): 1404 – 1413.