Intelligence, Surveillance, and Reconnaissance - Spawar

integrating ad hoc deployments into a unified Seaweb. Network interfaces
to manned command centers via gateways such as those provided
by Sublink and Racom are essential components. The sensor-rich fixed
grid benefits from visits by AUVs for the high-bit-rate data uploads and
intel downloads. AUVs and submarines use the fixed grid for networked
command, control, communications, and navigation. For amphibious
operations, deployed meteorological and oceanographic (METOC) systems
inform the battle group, and in situ ASW sensing seamlessly gives
way to in-stride autonomous mine countermeasures in support of the
approaching force. Seaweb provides the necessary infrastructure for common
situational awareness and collective adaptation to the evolving basic
rhythm and rules of engagement.
Seaweb revolutionizes naval warfare by ultimately extending networkcentric
operations into the undersea battlespace. In a letter dated 27 March
2002, ADM(Ret) James R. Hogg, Director of CNO’s Strategic Studies
Group, states, "Seaweb was quite valuable in conceiving the seabed-tospace
multi-tiered sensor field of ForceNet. This work demonstrates an
excellent model for an underwater sensor field and wireless network, and
helped answer some of the challenges of networking in such a difficult
medium."
ACKNOWLEDGMENT
This work is supported by Dr. Jim McEachern, Office of Naval Research
(ONR) 321SS and by Dr. Tom Swean, ONR 321OE. SBIR contracts are
supported by ONR 36.
REFERENCES
1. Rice, J. A., R. K. Creber, C. L. Fletcher, P. A. Baxley, D. C. Davison, and
K. E. Rogers. 2001. "Seaweb Undersea Acoustic Nets," Biennial Review
2001, TD 3117 (August), SSC San Diego, San Diego, CA, pp. 234–250.
2. Sozer, E. M., J. G. Proakis, J. A. Rice, and M. Stojanovic. 2002. "Shallow-
Water Acoustic Networks," Encyclopedia of Telecommunications, John
Wiley & Sons, Inc., New York, NY.
3. Proakis, J. G., E. M. Sozer, J. A. Rice, and M. Stojanovic. 2001. "Shallow
Water Acoustic Networks," IEEE Communications Magazine, Institute of
Electrical and Electronics Engineers, vol. 39, no. 11 (November), pp. 114–119.
4. Owen, M. W., D. M. Klamer, and B. Dean, "Evolutionary Control of an
Autonomous Field," Biennial Review 2001, TD 3117 (August), SSC San
Diego, San Diego, CA, pp. 47–57.
5. McDonald, V. K., M. B. Klausen, S. G. Briest, D. C. Davison, W. H. Marn,
J. R. Olsen, P. Hursky, and M. B. Porter. 2003. "Real-Time Implementation
of a Matched-Field Tracker in an Autonomous Submerged Target Trip-Wire
System," Biennial Review 2003, TD 3155 (December), SSC San Diego, San
Diego, CA, pp. 156–161.
6. Porta, D., J. A. Rice, and D. Codiga. 2001. "Acoustic Modem Multi-Access
Networking for Data Acquisition," Sea Technology, vol. 42, no. 5 (May),
pp. 10–14.
7. Rice, J. A., C. L. Fletcher, R. K. Creber, J. E. Hardiman, and K. F. Scussel.
2001. "Networked Undersea Acoustic Communications Involving a
Submerged Submarine, Deployable Autonomous Distributed Sensors, and a
Radio Gateway Buoy Linked to an Ashore Command Center," Proceedings
of the Undersea Defence Technology (UDT) Conference.
8. Rice, J. A. 2002. "Undersea Networked Acoustic Communication and
Navigation for Autonomous Mine-Countermeasure Systems," Proceedings
of the 5 th International Symposium on Technology and the Mine Problem,
Naval Postgraduate School, Monterey, CA.
Enabling Undersea ForceNet with Seaweb Acoustic Networks 179