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Method and system for automatically determining lines of sight between nodes

  • US 7,228,123 B2
  • Filed: 03/17/2004
  • Issued: 06/05/2007
  • Est. Priority Date: 05/24/2002
  • Status: Expired due to Fees
First Claim
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1. A method of determining a possible alternative line-of-sight between a first node and a second node, wherein said nodes are located in an area for which an aerial image is available, comprising the steps of:

  • (a) determining a first degree of freedom line for the first node, and a second degree of freedom line for the second node, such that each degree of freedom line is orthogonal to the straight line between the nodes;

    (a) determining a resolution of the aerial image and an alternative position data parameter;

    (b) placing the first node at a first placement that is a distance equal to the resolution in a first direction along the first degree of freedom line from the current placement of the first node, and(c) placing the second node at a second placement that is a distance equal to the resolution in the first direction along the second degree of freedom line from the current placement of the second node;

    (d) determining if the straight line between the first node at the first placement and the second node at the second placement is a valid, unobstructed line-of-sight;

    (e) if the straight line is a valid, unobstructed line-of-sight, saving the line-of-sight; and

    if the straight line is not a valid, unobstructed line-of-sight, repeating steps (c)–

    (e) until the first node has been moved the distance specified in the alternative position data parameter.

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