GDS’ LiDAR System and innovative transmission line design software provides the most cost effective and fastest solution for the design of new transmission lines while minimizing environmental and social impacts.


Most cost effective technique and accurate terrain information in identifying and planning for transmission line corridor to optimize the maintenance including vegetation and other encroachment management.

  • Allows multiple alignment analysis for strip survey of 500m corridor width and Minimizes survey time, construction time, and costs
  • Decrease monumentation and tree marking costs and Provides up-to-date and accurate spatial data including imagery for 500m corridor width
  • Land acquisition plan preparation in digital format and Optimizes route and profile planning within short period of time
  • Optimizes transmission line alignment design and Maps 3D catenaries of existing transmission lines and other features for accurate obstruction mapping
  • Discrete surveying means land owners are undisturbed and Collects data below clouds
  • Collects data in highly undulating, densely vegetated areas. Compatible with most major engineering and GIS software (Optimal, PLS-CADD, ArcView, MapInfo, MOSS/MX, AutoCad, Microstation etc.)


  • Airborne LiDAR, Digital Imagery and Land Survey for Tanjung Tohor, Yong Peng, Johor 
  • Airborne LiDAR Survey Services for Bakun-Similajau, Sarawak 
  • Electricity Blueprint Iskandar Malaysia
  • Airborne LiDAR and Imagery Topographical Survey for Transmission Line 275 kV Ulu Jelai (Cameron Hingland) to Tapah & from Tapah to Bentong (South), Pahang
  • Airborne Laser and Digital Imagery Topographical Survey for the Sarawak-Peninsular Malaysia (SARPEN) HVDC Link Project 
  • Airborne Laser Survey Works for New 500 kV Transmission Line project from Jimah Power Plant to PMU Lenggeng, Negeri Sembilan
  • Sabah East West Grid Interconnection Project-A LiDAR Airborne Survey between Kota Kinabalu and Sandakan 


1. Airborne LiDAR, Digital Imagery and Land Survey for Tanjung Tohor, Yong Peng, Johor 

  • Project Area: 26 km x 0.35 km. LiDAR Data Acquisition: 3 weeks
  • GPS Static Survey: 5 days 
  • DTM/DEM, GIS & Contour Delivered: 2 weeks airborne data acquisition completed
  • Final Mapping & Orthophoto Mosaic Delivered: 5 weeks airborne data acquisition completed
  • LiDAR Density: More than 2,000,000 points in 1 km x 1 km (2.0 points/m²)
  • LiDAR Points Hitting the Ground: More than 200,000 points in 1 km x 1 km (0.2 points/m²)
  • Average Point Spacing: 2.2 m


The proposed method of existing transmission lines re-rating is fast, cost effective and environmentally friendly as compared to the construction of new lines. The technology can help utility companies verify the actual capacity of the transmission line in order to maximize the loading, especially on lines identified as critical. The technique is the most cost effective for upgrading. 


  • Provides extremely accurate georeferenced information for monitoring transmission line corridors to minimize the impact on construction cost and service accessibility
  • Provide accurate topographical and digital imagery data with high point density 
  • Minimizes survey time and cost Strip survey of corridor width
  • Perform detailed re-rating analysis 
  • Upgrading 1 or 2 spans can result in upgrading existing transmission lines
  • Provide up-to-date and accurate spatial data including imagery for distribution network management
  • Monitors and prevents encroachment and vegetation overgrowth


  • Manitoba Hydro Thermal Rating Assessment, Canada
  • Sask Power Rating Verification, Canada
  • Dairy Power Co-operative, USA
LiDAR Data for Re-Rating Analysis


Manitoba Hydro Thermal Rating Assessment, Canada

  • Original Design: 50 C Maximum Thermal Rating, 37 Mw Capacity at 38 C Ambient & 2 Ft/sec Wind (Summer Rating)
  • LiDAR Data Verification: 56 C Maximum Thermal Rating, 52 Mw Capacity at 38 C Ambient & 2 Ft/sec Wind
  • Final Results: Increased Temperature Rating from 56 C to 100 C
  • Increased Rating from 52 Mw to 115 Mw
  • Rating increased by 121%
  • Confirmed original design Rating
  • Proceeded to N&T Analysis
  • Construction Took One Weekend (2 days)


  • Raw wave form data
  • Earth Surface Elevation Data (X,Y,Z)
  • Trajectory
  • Raw Imagery
  • Orthophotos Mosaic
  • DTM & DEM
  • Contours
  • TIN Digital Model
  • Digitized Features
  • Rout Plan& Profile Plan
  • Longitudinal Profile & Cross Section
  • Conversion to PLS-CADD, MOSS & Other Engineering Software Formats
  • Plan & Profile Drawing
  • Catenary Analysis
  • Rating Capacity Report
  • Paper Plot
  • 3D Fly-Through
Re-Rating Analysis