How to Distribute GPS-Time Over COTS-Based LANs

Abstract

This paper shows how to distribute GPS-time with micro-accuracy and below even in Ethernet-based distributed systems. Our SynUTC-approach is based upon a simple network controller-level hardware for timestamping data packets as they leave and arrive at a node, which comes in two flavors: The memory-based times-tamping method exploited by our Network Time Interface (NTI) M-Module timestamps data packets as the network controller accesses them in memory. This technique can be used for virtually any type of network and network controllers. For 10 Mb/s Ethernet, for example, our experimental evaluation revealed a time distribution accuracy down to the pus-range.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1999
Accession Number
ADA489835

Entities

People

  • Martin Horauer
  • Nikolaus Kero
  • Ulrich Schmid

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Clocks
  • Computations
  • Computing System Architectures
  • Control Systems Engineering
  • Decoding
  • Device Drivers
  • Electrical Engineering
  • Electronic Mail
  • Frequency
  • Networks
  • Oscillators
  • Power Distribution
  • Precision
  • Standards
  • Time Intervals

Fields of Study

  • Computer science

Readers

  • Computer Networking

Technology Areas

  • Space