This year’s Intergeo, to be held at the Exhibition Centre in Düsseldorf, Germany from 4th to 6th October, is expected to exceed all limits. With opening extended to three whole...

A beam coming from the instrument. Aim it at a surface and push the button, and the distance is measured by laser. Reflectorless laser distance measurement, <i>I know what it...

A new laboratory method for verifying the accuracy of distance measuring solves the problem of having to mount reflectors outside the laboratory. The limited space of the laboratory is duplicated...

Surveyors working on busy roads are constantly subjected to close misses from passing traffic; it can be worse. Helicopter photogrammetry is a survey technique designed to prevent fatalities. A complete,...

Standards are set within Europe as a result of voluntary agreements between the 28 member countries via the European Committee for Standardization (CEN). After a five-year period of dormancy, the...

Looking through a telescope; sending and receiving electromagnetic waves through this telescope; taking pictures through this same telescope. And all through the same line-of-sight: co-axial. <i>I know what it is,...

This issue of GIM International presents a Product Survey on rotating lasers. Laser: a light beam coming from a survey instrument, used for distance measurement, levelling, guiding and pointing. Laser:...

‘Knowledge and Action for the Earth’ is the theme of Intergeo 2006, the annual geodesy and geo-information conference and trade-fair organised in association with the German Association of Surveying (DVW)...

Lying in one of the most tectonically active zones in the Alpine-Himalayan belt, Iran frequently suffers from heavy and disastrous earthquakes. To monitor surface displacement and measure velocity and strain...

Traditional horizontal and vertical datum have two separate origins: respectively Earth’s centre of mass as origin for horizontal, and mean sea level (the geoid) as origin for vertical. The author...