Surveying with drone offers enormous potential for surveyors and other professionals. It can dramatically reduce cost as well as the workload of the specialists in the field. Since, it is an aerial method so it remarks the cost of the life of the surveyors too. With the help of drones, it is possible to carry out the survey with similar degree of accuracy as compared to that of the traditional methods in the fraction of the time.

With the advent of use of drones in military purpose, the role of the drone reached up to surveying for civil purpose. The use of the drones became cheap and time efficient method to collect any sort of data. Considering this advantage, people began to use it as an alternative way of performing work including surveying. Time and cost efficiency in addition to security of the life of the surveyor, attracts the concerned authorities to use drone survey instead of traditional methods of surveying.

It has been found that, capturing the geospatial data with the help of drone is about five times faster than that of other traditional methods also it requires less work force. Unlike total stations, which measure only individual points, one drone flight produces thousands of measurements in various formats. In addition to these, it can generate 3D geological data, which is a boon for every surveyor. A mapping drone can reach anywhere. Unreachable bushy areas or steep slopes never stop it. Most admired reason for using drone survey is that, you do not need to close down highways or railway tracks to capture data. As said earlier, it generates high-resolution detailed 3D models of the areas where the data is outdated. Surveyors can also extract from the images such as signs, curbs road markers, fire hydrants and drains. After post processing with photogrammetry software, it can produce 3D reconstruction of land sites or building. In addition to these, the drone greatly accelerate and simplify topographic surveys for land management and training and planning and holds pure accuracy for site scouting, allotment, plotting and design. The major advantage as mentioned earlier, the generated data from drone combines with other design software like BIM or CAD so that engineers can work from 3D model. We take high-resolution images at regular intervals, as the data collection is easily repeatable at low cost. In addition to these, it overlays along the original blueprint to assess whether construction work is moving according to specifications or not. High-resolution orthophotos enable surveyors to perform highly accurate surface and distance measurements. With 3D modeling software, it is possible to obtain volumetric measurement from very same measurements. Now this fast and inexpensive method is useful for calculating volume of stocks in mine for monitory purpose. It does in much safer way as compare to that of surveyor going up and down consuming a lot of time.

The development of the increasingly dense and complex areas requires intensive planning so it is expensive and time-consuming method for collecting the data. However, drones enables urban planners to collect it within short period with less staff. The images produced in this way allows planners to examine the existing social and environmental conditions of the site and consider the impact of different scenarios. So upon considering these advantages, drone survey is considered as the major breakthrough for the surveying, unless the time comes when the human surveyors become jobless.

Ashutosh Lamsal