In the vehicle-borne 3D measurement system

in order to acquire 3D space information needed by digital city quickly

in real-time and completely

global positioning system（GPS）

laser scanner（LS） and multiple sensors so on are integrated.The Multi-sensor fusion theory is applied in these sensors’data processing.Space registration and time registration are keys to fuse multi-sensor’s data information effectively.Problems of multi-sensor’s space registration and time registration are solved via computing the coordinate relationship among these sensors and using LS’s time record and GPS’s time marker.Presently it is successfully applied to close range target 3D measurement technology.The expected purposes are achieved and the experimental results are demonstrated.