×

System and method to position register and phase synchronize a monitoring network

  • US 7,663,535 B2
  • Filed: 07/25/2007
  • Issued: 02/16/2010
  • Est. Priority Date: 07/25/2007
  • Status: Expired due to Fees
First Claim
Patent Images

1. A system for establishing position registration and pair-wise phase differences for a plurality of monitors in a monitor network, to prepare said monitor network for locating a beacon, said system comprising:

  • a means at a first said monitor for transmitting a measurement signal from said first monitor to a second said monitor with known phase and signal propagation velocity;

    a means at said second monitor for transponding the measurement signal with a pre-identified transponder delay duration for transmission as a return signal from said second monitor to said first monitor;

    a means for comparing the return signal with the transmitted signal to establish a phase difference;

    a means for determining a separation distance between said first monitor and said second monitor using said established phase difference, said propagation velocity and said pre-identified transponder delay duration to register said first monitor relative to said second monitor; and

    a means at one of said first or second monitors for using said separation distance and a measurement signal from said other first or second monitors to determine a pair-wise phase difference for said first and second monitors.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×