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A CRAFT Model that Evolves from Experimental to Operational
Built with
Early Private-Sector Participation

The Two Phases

Background

Basic Functionality of the
Local Data Manager (LDM)

LDM in an 88D (with compression)
requiring ~56kbit/s to Internet

LDM as an Aggregator
requiring 2 x (N radars) x 56kbit/s

LDM as a (high-performance) Relay
(M recipients) x (N radars) x 56kbit/s

LDM at a “Leaf” Node
(N radars) x 56kbit/s

Economical Distribution Strategies
(balancing bandwidth needs against delay)

Highlighted LDM Characteristics

An Experimental-Phase Model

Phase I Principles

Phase 2 Principles
(assuming success in Phase 1)

Dave’s Planning Assumptions
(re the NWS role)

Some Planning Questions

Assuming NWS eventually will:
Run the 88Ds as an integrated system & Utilize more Internet communications

Dave’s (Naive) Answers

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