IMCA publishes guidelines on the use of GNSS for tide calculations
The International Marine Contractors Association’s (IMCA) newly published ‘Guidelines on the use of GNSS for tide calculations’ (IMCA S 027) provides an overview of how Global Navigation Satellite Systems (GNSS) can assist in more accurate real-time direct measurement of tidal changes.
As Nick Hough, …

National security missions for the Australian DoD supported by Maxar
Maxar Technologies has delivered 3D data products and high-resolution satellite imagery to the Australian Department of Defence under recent multi-million-dollar contracts.

Maxar’s 3D data suite enhances situational awareness and decision-making for military applications. The 3D data suite includes a 3D Surface Model, which provides a high-fidelity, positionally …

From times immemorial, the cities, agriculture and culture evolved along the rivers. Among various Delhi’s, Shahjahanabad (17th Century), was built along the river Yamuna, a 1370 km long river emanating from the Himalayas and merging into the River Ganga at Prayag. However, with indiscriminate urbanisation River Yamuna in Delhi…

The objective of this article is to share the knowledge of alternative way of geoid determination with incorporating a high resolution GGM, terrain and GPS/levelling data

Dr H M I Prasanna

Senior Lecturer, Faculty of Geomatics, Sabaragamuwa University of Sri Lanka, P.O. Box 02, Belihuloya, 70140, Sri Lanka

Development of GGMs
With the advent of new gravity dedicated satellite …

The Australian Height Datum (AHD) is Australia’s first and only legal vertical datum, celebrating its 50th anniversary this year. The adjustment of the Australian National Levelling Network (ANLN) in May 1971 provided, for the first time, a nationwide network of physical AHD heights (Roelse et al., 1975).

The European Defence Agency (EDA) has awarded GMV two projects: SAFETERM and AI-GNCAir, two of the most advanced initiatives being carried out by GMV in this field.

SAFETERM’s purpose is to improve the flight termination procedures of Medium Altitude Long Endurance (MALE) RPASs.

Under this overarching goal its main remit is to increase the general safety level …

U.S. Geological Survey scientists have developed and made available a new mapping resource that can identify the most vulnerable marshes across the contiguous U.S. through a combination of remote-sensing and satellite technologies. These maps provide critical information to land managers and help inform marsh conservation and restoration strategies without costly site-specific or labor-intensive assessments.

The USGS …

Scottish Forestry, the government agency responsible for forestry policy, support and regulations in Scotland, is using specially commissioned aerial photography to help identify trees in distress. Trees are facing an increased threat due to pests, disease and climate change, and, as a result of social distancing regulations, Scottish Forestry was unable to undertake its usual …

Commercial UAV Expo Americas is North America’s leading trade show and conference focusing on the integration and operation of commercial UAS with more exhibitors than any other commercial drone event. Industries covered include Construction; Drone Delivery; Energy & Utilities; Forestry & Agriculture; Infrastructure & Transportation; Mining & Aggregates; Public Safety & Emergency Services; Security; and …

Iridium Communications Inc. has announced that it has made a strategic investment in DDK Positioning (DDK), an Aberdeen, Scotland based provider of enhanced Global Navigation Satellite System (GNSS) accuracy solutions. DDK uses the Iridium® network to provide global precision positioning services that can augment GNSS constellations, including GPS and Galileo, to significantly enhance their accuracy for critical industrial applications. DDK is also …