Patent ID: 8582394

Claim:
A method for determining geodetic position of a point on a second geophysical sensor streamer towed in a body of water, comprising: determining geodetic positions of a plurality of locations along a first geophysical sensor streamer which is towed at a first depth in the body of water; causing a lateral relative offset between the first geophysical sensor streamer and the second geophysical sensor streamer; measuring a distance between the point on the second geophysical sensor streamer and each of a first and a second selected points along the first geophysical sensor streamer; measuring a second depth at the point on the second geophysical sensor streamer, wherein the second depth is greater than the first depth; calculating a depth difference from the first depth and the second depth; and determining a geodetic position at the point on the second geophysical sensor streamer using the depth difference, a direction of the lateral relative offset from the first geophysical sensor streamer to the second geophysical sensor streamer and the measured distances.