Asian Surveying & Mapping
Breaking News
Indian-origin astronaut Sunita Williams dances on arrival at space station on her 3rd trip
Indian-American astronaut Sunita Williams has created history once again....
ISRO all set for third reusable launch vehicle landing experiment
Taking its Reusable Launch Vehicle (RLV) programme one more...
SpaceX Starship and Boeing Starliner show way for Asia’s space race
TOKYO -- This week's successful launches of Boeing's Starliner...
IIT-Kanpur launches ‘UDAAN’ to boost drone startups in India
Kanpur: The Startup Incubation and Innovation Centre (SIIC) at...
South Korea creates new KASA space agency, sets sights on the moon and Mars
South Korea is aiming to expand its presence in...
AEye CEO Matt Fisch to Keynote at Auto Lidar Tech Conference in Suzhou, China
Event hosted by DVN and Enmore scheduled for June...
South Korea is gearing up to become space powerhouse
From Samsung’s smartphones to SK Hynix’s semiconductors, South Korean...
Indian space tech startup to launch six satellites in 2024 via ISRO and SpaceX rockets
Pixxel, a Bengaluru-based space tech startup, plans to launch...
China’s secretive spaceplane releases object into orbit
HELSINKI — China’s experimental reusable spacecraft has released an...
Japan to create flood projection maps for 4 Southeast Asian nations
Japan plans to create flood projection maps for Indonesia,...
hong kong airport noise analysis

Topographic data can be collected through the use of various technologies. Multi-beam sonar techniques are used to develop subsea elevation models. Low altitude UAVs have been used to create digital elevation models (DEM) and low altitude photogrammetry , like Leica Photogrammetry Suite has also been used to create DEMs. RhinoTerrain, for example, includes a plugin that directly connects that software to Google Earth.

A key point to working with topographic data is the quality of the data. As with most geospatial data, the highest quality results are achieved with the highest quality topographic data. A good example of this the recent decision by Geoimage of Australia to begin reselling Intermap NEXTMap data. “Intermap collects elevation data aerially, using aircraft equipped with Interferometric Synthetic Aperture Radar (IFSAR) technology and supplements this with satellite acquired data to generate uniform, high-resolution 3D digital models and orthorectified imagery of the earth’s surface.”

High quality topographic data is important in many applications. It is hard to imagine laying pipelines or building roads or developing architectural plans without high quality topographic data. For other applications, such as disaster and relief, topographic data of high quality is also important, particularly where earthquakes, flooding, tsunami and landslides are prevalent. 

———————
Image: Hong Kong Airport noise analysis incorporating topographic data.
www.airportnetwork.com