×

Navigational aid for diver

  • US 7,333,394 B2
  • Filed: 06/22/2005
  • Issued: 02/19/2008
  • Est. Priority Date: 06/22/2005
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of underwater navigation, said method comprising:

  • determining, at a first underwater device, a direction to a target relative to a first angular reference known to the first underwater device;

    establishing a reference line between the first and a second underwater device, said reference line forming the base of a reference triangle whose vertices correspond respectively to the first underwater device, the second underwater device and the target;

    computing, at the first underwater device, a first included angle of said reference triangle between the reference line and a line extending from the first underwater device to the target based on the direction to the target from the first underwater device;

    determining, at the first underwater device, a first distance between the first underwater device and the target;

    determining at the first underwater device, a second distance between the first and second underwater device;

    computing, at the first underwater device, a third distance from the second underwater device to the target based on the first included angle and the first and second distances; and

    transmitting the third distance to the second underwater device to assist the second underwater device in locating the target.

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