Sirem: The Absolute Location of Civil Engineering Equipment

After having shown the necessity to locate in the three dimensions the civil engineering machines whose tasks are to be automated, the authors recall the advantages and disadvantages of the different existing systems and methods. The main point of the system is about an original location system using an on-board measuring device and everstanding luminous grade stakes. In a first step we explain the resolution method assuming does not move during the data acquisition and set out the obtained simulation results in terms of algorithms and sensivity of the latter to measuring errors. Once the static problem solved, we propose a resolution principle for the dynamic location using the previous results combines witha behavior model of the vehicle and an estimator. The paper ends with he description of the real system being built with the presentation of the future steps of the SIREM program.