Article Archive

An extensive archive of all articles published on GIM International

Towards a Coastline Base Map in Indonesia

Towards a Coastline Base Map in Indonesia

The accuracy of coastline data in Indonesia could be much improved by making use of Lidar bathymetry technology. In this article, the authors describe how Lidar bathymetry survey techniques were appli...

The Key Parameters of a Modern Lidar System

The Key Parameters of a Modern Lidar System

In the past, the effort of hardware integration and the necessary combination of different software tools was a major hurdle to gain a foothold in the field of laser scanning. This hurdle has now been...

EAASI Ascends to New Heights

EAASI Ascends to New Heights

More than 40 companies have joined EAASI since the European aerial mapping industry created the not-for-profit umbrella organization aimed at fostering joint interests less than two years ago. In this...

Lidar or Photogrammetry? Why Not Use Both?

Lidar or Photogrammetry? Why Not Use Both?

Is it possible to enhance point cloud accuracy and density by merging Lidar with photogrammetry technologies? Lidar data can penetrate trees and measure shadow areas to produce a very accurate point c...

Signal Disruptions

Signal Disruptions

GNSS… it’s almost impossible to run a modern geo-related business without it. But what if a problem should occur? Whether in navigation, surveying or even agriculture, countless activities almost ...

Recent Trends in Four Lidar Technologies

Recent Trends in Four Lidar Technologies

Lidar technology is synonymous with 3D point clouds. To get the most out of 3D point cloud data, it is necessary to step back and continually consider the newest trends in Lidar technology and how the...

SfM Photogrammetry for 3D Terrain Mapping

SfM Photogrammetry for 3D Terrain Mapping

The technique known as structure from motion (SfM) has been suggested as a valid alternative to traditional photogrammetric methods. In a project in Glasgow, UK, an RTK-based point-to-point validation...

How Real-time Monitoring Reduces Water Losses

How Real-time Monitoring Reduces Water Losses

Real-time monitoring can reduce long-term losses caused by holes across a network of water pipes. At 6 bar pressure, a pipe with a 6mm hole will leak 1.8 cubic metres per hour, which equates to 1,300 ...

Usage of UAVs for Flat Roof Drainage Calculations

Usage of UAVs for Flat Roof Drainage Calculations

Modelling of urban areas, with emphasis on flat roof drainage calculations, is one application field in which the use of UAVs has significantly increased in recent years. A calibration base, built at ...

What is GNSS Spoofing?

What is GNSS Spoofing?

With spoofing attacks on the rise, survey-grade GNSS receivers need to be protected by interference mitigation technology utilizing the latest security techniques to ensure reliable positioning. The s...

Satellite Imagery: An Aerial Alternative

Satellite Imagery: An Aerial Alternative

Remote sensing projects often begin with the question: 'Should I use aerial imagery or satellite imagery?'. During long-term projects, this question may arise again, particularly when unforeseen circu...