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SYSTEMS AND METHODS FOR SPACE-TIME DETERMINATIONS WITH REDUCED NETWORK TRAFFIC

  • US 20100202300A1
  • Filed: 02/12/2009
  • Published: 08/12/2010
  • Est. Priority Date: 02/12/2009
  • Status: Active Grant
First Claim
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1. A method of determining location and timing information of a local node in a network, the method comprising:

  • receiving pings from a plurality of nodes in the network, each ping comprising;

    a transmit count stamp corresponding to a remote time when the respective node transmits the ping, the remote time based on an independent remote clock operating in a respective node; and

    a remote location of the respective node at the remote time when the respective node transmits the ping;

    for each ping received within a predetermined time interval;

    associating a receive count stamp with the received ping, the receive count stamp corresponding to a local time when the ping is received, the local time based on the independent local clock; and

    associating a local location with the ping, the local location corresponding to the local time when the ping is received; and

    processing the transmit count stamps, the remote locations, the receive count stamps, and the local locations corresponding to the pings received within the predetermined time interval to determine one or more clock solutions for correlating the independent local clock with a network time, and to determine one or more location solutions for estimating a new local location.

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