4. Topography Survey
Topographical survey involves the generation of
contours and the production of Digital Terrain Models. Such services are
required by engineers and designers to help calculate volume for earthworks (cut
and fill). With the advent of computer technology most of our clients want data
in digital format, usually ASCII and MOSS.
5. Digital Mobile Mapping
- Digital Video Mapping
- Laser Radar Mapping (LIDar)
6. Aerial Photogrammetry
Photogrammetric surveys are employed to help
identify the general topography of the area of investigation before one engages
the field survey units. It is also used now to gather the latest ground
information for the complication of GIS data. Photo mosaics produced help
identify routes for new highways, transmission lines, gas pipelines etc. This
method can ensure that the designed route will not pass over residential areas,
sites of sensitive nature such as cemeteries, schools and historical sites. Photogrammetry will only be cost effective if the area of coverage is very
large.
