In the first stage an operational team has done evaluation of a pilot project to achieve a better recognition on main project.
Analyzing the required time, cost and accuracy and the willingness of GIS in company are the aim that have been achieved in pilot project.
In second step the hardware and software of system was developed .In recent system there is capability to observe the profile of track and the rate of kilometers that have been taken. In developed system we can see the film and table of spatial and attribute information of railway features at the same time.
Collecting information of the track have been done by four digital cameras (three analog camera used in pilot project) [2] (figure4).
In the third stage a user interface was designed and the information form of features were completed systematically, and spatial and attribute information of railway features were stored in a Geodatabase. The capability of producing the geometric information of track in the film is a goal of near future.
[Page]
Figure4:Installation of digital camera on Derezin (trolley)
DGSRAIL System Ability
The most important capability of this system are:
I)Collection of Spatial Information by GPS:
For collecting spatial information from railway network by GPS, the program have been designed and Implemented that can get information from
