An essential aspect of providing accurate mapping data, is with the use of mobile mapping technology. It involves using the most advanced sensors and cameras to obtain quality point data that is extremely accurate. These devices are usually installed on some type of mobile platform. This type of mapping can involve roadway and rail transportation, as well as utilities mapping, streetscape design and more.
According to an article in Earth Magazine, “A new generation of lidar technology is bringing the laser-based survey method down to Earth by mounting the instruments atop SUVs, boats and even backpacks.”
Mobile mapping provides advantages over airborne mapping or conventional survey methods. It has proven to be an extremely quick and easy way to obtain data. When using mobile laser scanning for rail or other types of transportation projects, it provides a high level of safety. This kind of mobile mapping can be done in the day or night. It is also able to obtain data remotely. This will remove the need to divert traffic, or impact maintenance and construction schedules.
Mobile mapping is most effective when lidar systems are utilized. A lidar system comprises four separate instruments. There is a positioning system, a scanner, a laser, and photo detector. These items are designed to work together and accurately measure distances to an object. Pulses of light are used to illuminate a destination. The time required for a pulse of light to hit a destination, and bounce back to the laser, is how distance is measured. The lidar system is very effective. Entire large landscapes can be completely covered with a low number of sweeps using this system. The data obtained from the system can then be entered into computer software. This can produce an accurate 3D, high resolution topographical map.
The systems utilized with mobile mapping are very accurate. The lasers utilized can be accurate to within a few millimeters. The sensor position from kinematic GPS can provide positional accuracy of less than 3 centimeters. The results of mobile mapping is accurate enough for some of the most intense project requirements.
There are a variety of projects where mobile mapping can be used. Everything from upgrading a transportation route, to upgrading a current building and more, could use the benefit provided by mobile mapping. The process is designed to adapt to a number of different types of applications.
Many municipalities are using it to for emergency response planning. People are able to use mobile mapping on the internet to obtain aerial images, satellite photographs as well as online route mapping. It also enables a quick way to update road maps. It is a valuable tool among geologists, as well as surveyors and more.
Mobile mapping is able to provide detailed images of indoor areas. This has enabled the creation of precise interior images of large buildings, sports stadiums and more. These images can be used to detect weak points in a structure that could cause problems in the future. It can assist in the design of alterations for buildings. Real estate agents are able to provide an impressive level of detail when posting images of a building by utilizing this technology.