DAP-1

Navy Surface Combatant

Sensor Network Challenges

Dave Phillips7 October 1999

DARPA Sensor IT Workshop

DAP-2

Technology Requirements Driven By New Ship Development Program Objectives

Highly Capable, Multi-mission Affordable Survivable Reliable Maintainable & Sustainable Interoperable Flexible Upgradeable Maintain High Quality of Life for the Crew Environmentally Friendly

DAP-3

Why Do We Need Networked Sensors?

Need to Answer the Questions Is everything OK? What is happening? Are my corrective actions working? Will equipment fail before mission completion?

Typical Measurements Needed in Ship Spaces (machinery and open space) Temperature Smoke/Gases Water/Fluids Noise Light/RF

Vibration/Shock Stress/Strain Movement Others

DAP-4

Networked Sensor Vision

Many Sensors Within Space

Wireless Connections with Access Point on Shipwide LAN

Tied to Actuators

“Smart”

Replicated in Each Space

DAP-5

Affordability Challenges

Non-Recurring Engineering Minimized

Leverage COTS and commercial system development

Low Recurring Costs

Thousands of sensors per ship

Inexpensive sensors, processing units

Easy to install/ remove

• Minimal or no wiring

Low Operating and Support Costs

No maintenance (e.g., battery replacement)

Automatic test and calibration

DAP-6

Survivability Challenges

Sensors Must Survive

Normal ship environment

Catastrophic events when data is most needed to assess and monitor space or machinery

• Fire

• Flood

• Explosion

Willing to Trade Reliability Against Cost Provided Redundancy and Coverage Can Be Accomplished at Higher Level

• Shock

• Others

DAP-7

Other Challenges

Scaleable

Architecture must accommodate few to many sensors

Open

Sensors should connect to network using open standards

Upgradeable

Sensors should be easily upgraded as sensor technology evolves

Environmentally Friendly

Safe in normal and during catastrophic events

DAP-8

Summary

Many Challenges to Networked Sensors in Surface Ships

Other Platforms Have Similar Challenges

Cost is Challenge Number One

Have a Very Successful Workshop!