DRAGSENS Geo Software is used for the exact position
estimation of a towed body, sensor, camera, array or
net, dragged behind a ship, aircraft or vehicle. The
software allows a real-time estimation of the position
of a dragged sensor based on the location of a GPS-
receiver. The sensor thereby can be dragged
underwater, at water or earth surface or be airborne.
The software calculates the position of the sensor
along the direction opposite to the course by
compensation of the drift rate, the rolling and the
cornering ability of the towing vehicle. DRAGSENS
receives current position data from a standard GPS
string (RMC string). From these positions it averages
a direction vector. Knowing the length of the tow
cable, and the sensor depth, the sensor position is
estimated and output in both kilometric and geographic
formats. Suitable coefficients help keeping this
estimation precise, considering, for example, the
cable not as a straight line but as a parabolic arch.
DRAGSENS runs under Microsoft Windows and uses two
independent serial ports. That also may be USB ports,

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