Design And Realization Of Rural Road Information Collecting System

It takes more and more serious attention with the development of the national economic, the rural road that regarded as propping up of arterial highway net in the recent years. For making a scientific policy in rural area highway plan, construction, curing, management and application, the rural road information data base is necessary. But due to some characteristics of rural road such as small in mileage, more in amount, far from another, scattered in distributing and out-of-way places, it become more difficulty to collect the Information that is important for construct, keeping and updating data base. The tradition method based on manpower on foot has been already eliminated for its inefficient, expensive and bad quality. The mechanization information collect based on GPS technology becomes main way in recent years, but insufficient is still exists because of GPS positioning technology self s defect, this one way. To overcome these deficiencies, this paper has been submitted a idea about structuring a rural highway information collecting and handling system union the RMMS(Road Mobile Mapping Technology) and rural road advantage which is easy to drive, and has been realized the system according to this idea.The primo, several key technologies of RMMS having discussed in this paper:1) Intelligence positioning technology. In here, the technology how to gains position, posture information quickly and how to resolve the positioning continuity problem is described.2) The closed rang photographic measuring technology without control point. This paper has been introduced how to locate the positions of the objects, based on the three-dimensional images and absolute and relative position information that has been obtained dynamically.3) space-time synchronization control technology. Expound how to keep coherence of time and coordinate system between the various sensors.Follow, this design, project, ability and elements of the system have been introduced. Especially, two methods have been proposed to improve the systems integration, reliability and usability.At last, some test result have been introduced. Experiment results show that the system owns advanced technology, meet the need to collect and handle information, and further, it can be used to map electronic map of rural road and Construction, maintenance and updating the database.