Robotics is a highly interdisciplinary research topic, that requires integ- tion of methods for mechanics, control engineering, signal processing, planning, graphics, human-computer interaction, real-time systems, applied mathematics, and software engineering to enable construction of fully operational systems. The diversity of topics needed to design, implement, and deploy such systems implies that it is almost impossible for individual teams to provide the critical mass required for such endeavours.To facilitate interaction and progresson s- sor based intelligent robotics the organisation of inter-disciplinary workshops is necessarythrough which in-depth discussion can be used for cross dissemination between di?erent disciplines. The Dagstuhlfoundation has organiseda number of workshopsonModelling and Integration of Sensor Based Intelligent Robot Systems. The Dagstuhl s- inars are all organised over a full week in a beautiful setting in the Saarland in Germany. The setting provides an ideal environment for in-depth presen- tions and rich interactions between the participants. This volume contains the papers presented during the third workshopheld over the period September 28 - October 2, 1998. All papers have been reviewed by one-three reviewers over a relativly short period. We wish to thank all the reviewers for their invaluable help in making this a high quality selection of papers. We gratefully acknowledge the support of the Schloss Dagstuhl Foundation and the sta? at Springer-Verlag. Without their support the production of this volume would not have been possible.