Survey

_

ANGC boasts to be an elite land surveying firm offering the latest in land surveying technology including High Definition Surveying that saves clients countless hours and finances. ANGC have hands on experience in areas like:

  • Topographic surveys
  • ALTA surveys
  • Cadastral surveys
  • Conventional survey services
  • Geodetic control location
  • GPS/RTK surveys
  • Location verification surveys
  • Location/design surveys
  • Right-of-way and land acquisition
  • Structural deformation
  • Underground utility location surveys

Photogrammetry

_

Digital photogrammetry is the art of using computers to obtain the measurements of objects in a photograph. It typically involves analyzing one or more existing photographs or videos with photogrammetric software to determine spatial relationships. Used to create topographical maps, it may also be useful in a variety of industries.

ANGC have a department of digital photogrammetry with highly qualified and skilled employees. To achieve completeness and accuracy of each project, ANGC uses specific quality control and quality assurance team to meet client needs.

Photogrammetry Methods

_
  • Aerial triangulation
  • 3D City Modeling
  • Stereo compilation
  • Planimetric features
  • DEM/DTM generation
  • Contour generation

LiDAR

_

LiDAR (Light Detection And Ranging) is a revolutionary aerial laser scanning technology which enables height data from the land to be captured quicker, accurately and cost effectively.

LiDAR is the most cost effective method of capturing detailed height data both of the ground and features on the ground. It is ideal for generating digital elevation models and contours. Mapping infrastructure such as power-lines and corridors mapping for proposed pipeline, railway and road routes.

ANGC provides full range of LiDAR data processing services. ANGC's experienced staff subjects the collected data to a rigorous quality control review process – including data density, terrain variation analysis, data anomaly filtering, review of 3D/perspective views and review against corresponding digital orthophotography (where available).

LiDAR Process

_
  • Flood mapping.
  • Corridor Mapping Contour
  • Generation of Ortho photo using Terraphoto application
  • DTM & DEM Extractions- Ground & Topographical classifications
  • Power Line feature coding and centenary stringing
  • Feature Extractions- Advance classifications like Building, Moving features, vegetation etc...

GIS

_

ANGC can receive the inputs of various domains such as Cadastral maps, Utility maps, Geology maps and Engineering or Architectural drawing in paper or a scanned image format. we will digitize/convert these maps to digital format according to technical specification provided by the client. we offers and deliver the quality output in various formats as per the client requirements.

ANGC will follow the international data creation standards along with defined project process methodology to ensure the quality of the deliverables.

GIS Method

_
  • Topographic Maps
  • Topographic Maps
  • GPS survey
  • Thematic Maps Generation
  • Oil and Gas Pipe Line Data GIS Database Creation

Orthophoto Process

_

An orthophotograph is an aerial colour photograph geometrically and geographically corrected to be superimposed on a plan. The production of orthophotograph consists of correcting the distortions of the exposures caused by ground surface relief.

Digital Orthophoto are used as maps, for visual identification and also with combination of other mapping products like DTM and contours.

We generate digital Orthophoto that most closely achieves the resolution of the continuous tone and original aerial image. We apply a variety of image enhancement and edge sharpening routines using special Image processing techniques.

The process involves colour / contrast matching and feathering techniques to ensure a virtually seamless mosaic. Many images can be mosaicked and resampled to produce an overview image file to supplement the original orthoimages. Accuracy is measured by comparing the rectified position of ground control point to the true coordinates of the point.

Orthophoto

_
  • Ortho generation 3 band (RGB) and 4 band images(RGBi)
  • Ortho mosaicing
  • Seam line Editing
  • Color Balancing
  • Edge matching
  • Tile cutting

Laser Scanning

_

3D Laser Scanning is a non-contact, non-destructive technology that digitally captures the shape of physical objects using a line of laser light. 3D laser scanners create “point clouds” of data from the surface of an object. In other words, 3D laser scanning is a way to capture a physical object’s exact size and shape into the computer world as a digital 3-dimensional representation.

We uses 3D laser scan surveys to reverse engineering intelligent or non intelligent, accurate as-built 3D models, rapidly and low cost we gives the prospect of affordable 3D models for all clients.

Laser Scanning Method

_
  • 3D Modeling (AutoCAD, Revit, cyclone modeling)
  • Reverse engineering
  • Solid modeling
  • Surface texturing
  • BIM/MEP
  • Floor Plans, elevation and cross section