Passive localization in the sensor network has been studied in many areas. Especially, the estimation of the position and heading for the target is an important subject in the navigation problems. We estimate the position and the heading information only with range difference of arrival measurements. The proposed algorithms are based on the pseudo linear measurement equation transformed from the nonlinear one and uses the instrumental variable method to remove estimation errors. It does not need additional computational burden so that it will be advantageous to real time applications. To show the usefulness of the proposition, we simulate it in the various positions and headings comparing with a nominal least squares method and the robust least squares method.