Controlling lateral force developed by a paravane system. The light source control device includes a position detecting sensor and a microcontroller. The digital processor reads the logic state of the bistable memory device from its logic output and compares the logic state read to a stored previous logic state obtained from a previous read. The method comprises applying the data fixing rule to the database to detect if the set of attribute values that captures the error is stored in the database and, if the set of attribute values is detected, the method applies the deterministic correction to correct the error in the attribute values.