Lidar Survey Companies | Lidar Survey Companies in India

Lidar Survey Companies in India

Lidar Survey

Engineering Surveys are well known for its accuracies and the benefits we get from the output data. Surveying with a drone offers enormous potential to professionals. With a drone, it is possible to carry out topographic surveys of the same quality as the highly accurate measurements collected by traditional methods, but in a fraction of the time. This substantially reduces the cost of a site survey and the workload of specialists in the field.

A drone survey refers to the use of a drone, or unmanned aerial vehicle (UAV), to capture aerial data with downward-facing sensors, such as RGB or multispectral cameras, and LiDAR payloads. During a drone survey with an RGB camera, the ground is photographed several times from different angles, and each image is tagged with coordinates.

Photogrammetry combines images that contain the same point on the ground from multiple vantage points to yield detailed 2D and 3D maps. From this data, a photogrammetry software can create geo-referenced orthomosaics, elevation models or 3D models of the project area. These maps can also be used to extract information such as highly-accurate distances or volumetric measurements.

Unlike manned aircraft or satellite imagery, drones can fly at a much lower altitude, making the generation of high-resolution, high-accuracy data, much faster, less expensive and independent of atmospheric conditions such as cloud cover.

Advantages of Drone Survey:

Reduce field time and survey costs – Capturing topographic data with a drone is up to five times faster than with land-based methods and requires less manpower. With PPK geo-tagging, you also save time, as placing numerous GCPs is no longer necessary. You ultimately deliver your survey results faster and at a lower cost.
Provide accurate and exhaustive data – Total stations only measure individual points. One drone flight produces thousands of measurements, which can be represented in different formats (orthomosaic, point cloud, DTM, DSM, contour lines, etc). Each pixel of the produced map or point of the 3D model contains 3D geo-data.
Map otherwise inaccessible areas – An aerial mapping drone can take off and fly almost anywhere. You are no longer limited by unreachable areas, unsafe steep slopes or harsh terrain unsuitable for traditional measuring tools. You do not need to close down highways or train tracks. In fact, you can capture data during operation without an organizational overhead.

Uses of Survey using Drones:

Land surveying / cartography

Survey drones generate high-resolution orthomosaics and detailed 3D models of areas where low-quality, outdated or even no data, are available. They thus enable high-accuracy cadastral maps to be produced quickly and easily, even in complex or difficult to access environments. Surveyors can also extract features from the images, such as signs, road markers, drains etc

After post-processing with a photogrammetry software, these same images can produce very detailed elevation models, contour lines and breaklines, as well as 3D reconstructions of land sites or buildings.

Land management and development

Aerial images taken by drones greatly accelerate and simplify topographic surveys for land management and planning. This holds true for site scouting, allotment planning and design, as well as final construction of roads, buildings and utilities. The generated data can also be transferred to any CAD or BIM software so that engineers can immediately start working from a 3D model.

As data collection by drones is easily repeatable at low cost, images can be taken at regular intervals and overlaid on the original blueprints to assess whether the construction work is moving according to plan specifications.

Precise measurements

High resolution orthophotos enable surveyors to perform highly-accurate distance and

Stockpile volumetric measurements

With 3D mapping software, it is also possible to obtain volumetric measurements from the very same images. This fast and inexpensive method of volume measurement is particularly useful to calculate stocks in mines and quarries for inventory or monitoring purposes.

With a drone, surveyors can capture many more topographic data points, hence more accurate volume measurements. They can also do this in a much safer way than if they had to manually capture the data by going up and down a stockpile. Since drones are capturing the data from above, operations on site won’t be interrupted. The short acquisition time enables capturing a site snapshot at a specific point in time.

Slope monitoring

With automated GIS analysis, it is possible to extract slope measurements from DTMs and DSMs generated by drone imagery. Knowing the steepness of the ground’s surface, the areas can be classified and used for slope monitoring purposes, including landslide mitigation and prevention.

With orthomosaics taken at different times, it is possible to detect changes in earth movement and to measure its velocity. This data can help predict landslides and prevent potential damage to roads, railways and bridges.

Compared to traditional monitoring techniques, where sensors are placed on single points, drones enable more comprehensive data collection. Drones with PPK capability, which do not require laying out of multiple GCPs, are optimal for this application, since these areas are often hard to reach or even dangerous.

Urban planning

The development of increasingly dense and complex urban areas requires intensive planning and therefore time-consuming and expensive data collection. Thanks to drones, urban planners can collect large amounts of up-to-date data in a short period of time and with far less staff. The images produced in this way allow planners to examine the existing social and environmental conditions of the sites and consider the impact of different scenarios.

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WORK TOGETHER

Start of Meeting :

With all the efforts and understandings, proposals, quotations and tenders and all the efforts took by the business development team, finally it comes a day of work award. With the award of work, here it comes the responsibility of the projects team to execute the work and accountability of the Business Development team to handover all the data and project details they have, handed over to projects team.

Mobilisation :

With the start of the project, it is needed to carry out some activities such as Engineering Survey, Soil Investigation Activities etc to gather some important data and records that becomes useful for the study and preparation of reports. For such activities, we need to mobilise the required equipment and respective team so that they can conduct the required activities and send the acquired data to the team of experts.

Topographical survey :

The study of the greenfield/ brownfield land, with the use of new and latest state of the art technologies for studying the contours and levels of the land, demarcation of existing infrastructures and provision of survey drawings showing all marked utilities based on the study conducted. We at Suncon Engineers, perform survey using Total Stations, DGPS, LiDAR survey using Drones, Pavement Survey using Network Survey Vehicle.

Soil Investigation/ Geotech :

For a structure, to stand on its own and to withstand at all circumstances, it requires stability and strength from the earth’s surface. For that, it is needed initially to study the strata of the ground on which the structure needed to be erected. The Soil Investigation activities, helps us in studying the strata below the ground and collecting samples and after testing them in the laboratory we get some results, on the basis of that we will get to know the strength of the soil/ ground.

Interim Report :

Interim reports are reports presenting the interim, preliminary, or initial evaluation findings. They are scheduled according to the specific needs of your evaluation users, often halfway through the execution of a project. Suncon Engineers, while undergoing a project for DPR Preparation, follows a mid-project-step of submitting interim reports to clients on the findings obtained from the survey studies, Soil Investigation, Socio-Economic Survey, Population Forecasting, Water Sample Testing studies and a lot more.

Designs :

On the basis of the project path and sector, Suncon Engineers Pvt Ltd, has in-house team of designers who are expert in designing for Pavements for Roads, Highways, Bridges & Runways; Hydraulic designs which comprises of Storm Water Drain Designs, Sewerage Designs & Water Supply Designs; designing for Urban & Industrial Infrastructure such as residential, non-residential, commercial complexes, parks, rejuvenation of water bodies, stadiums, multi-level car parking, industrial sheds, industrial complexes and a lot more.

Detailed cost estimation :

On the basis of detailed designing of the project, cost estimation is the further process that undergoes in the pipeline. The cost estimates are done by the expert panel having more than 30 years of experience in the respective field. By following all the government sanctioned schedules and rates, a detailed cost estimation is done which becomes widely helpful for determining the project cost and getting grants from the respective departments.

Detailed Designed Drawings :

Detail design drawings, provides a detailed description of the geometric form of a part of an object such as a building, bridge, tunnel, machine, plant, and so on. They tend to be large-scale drawings that show in detail parts that may be included in less detail on general arrangement drawings. Suncon Engineers here, with the use of all the state-of-art software bears the credibility for creation of detailed designed drawings.

Environmental & Social Reports :

On the announcement and with the development of project, it is sure that it is going to affect the environment and social life on the site and surrounding areas. Hence, it is taken as a precautionary measure to conduct the environmental and social studies to understand the impact there will be on these factors. On the basis of this study and the findings from it, a detailed environmental & social impact assessment report is prepared

Draft Detailed Project Report :

On the basis of all the studies, findings designs & estimations, a draft DPR is prepared by the Suncon Team, and further checked and reviewed by the team of experts. This draft report, is sent to the client for their review. On the basis of their review, clients suggest or asks for some corrections/ modifications they need. Suncon Engineers, here compiles all the recommendations and comments and proceed further.

Tender Document :

With the completion of the Detailed Project Report preparation, sometimes support for tender document preparation is required by the client. The Suncon Engineers team here in these terms helps the client in preparation of tender document with all the required specifications and terms and conditions as defined by the client.

Final DPR :

The Final Detailed Project report is submitted to the client, after adjusting all the corrections and changes/ modifications requested/ suggested by clients. This DPR is further submitted by the client for further approvals and grants.