| Digital
Elevation Models (DEM) |
 |
 |
Generated from topographic
paper maps and RADARSAT, SPOT, IRS,
or ERS stereo images |
|
Stereo aerial photographs or high-resolution
stereo satellite imagery used to generate
highly accurate bald earth, canopy,
or engineering DEMs |
|
| Land
Use/Clutter Databases |
 |
|
Derived from paper maps,
satellite imagery, and aerial photography |
|
Depict natural and built-up features |
|
Typically contain between 7 to 20
clutter classes |
|
| Vector/Linear
Databases |
 |
|
Represent
transportation infrastructure, including
roads and railways, and other linear
features such as coastlines, rivers,
and borders |
|
Generated from topographic
paper maps, city guide maps, satellite
imagery, and aerial photographs |
|
3D
Building Vector and
Height Databases |
 |
|
Vector information
provided as polygons, representing building
footprints at the ground level |
|
Vector files contain
built-up structure footprints along
with their elevations |
|
Generated from aerial
photographs or high-resolution stereo
satellite imagery |
|
| Orthoimagery |
 |
|
Fully rectified
orthoimagery, provided as a seamless
mosaic of the source aerial photographs
or as satellite imagery |
|
Source imagery corrected
to remove distortions due to camera
and topography errors |
|
| Conversion
of Client Data Sets |
 |
|
Transform
client data into different projection
systems |
|
Update old datasets with
freshly created data |
|
Change data resolution |
|
Convert to other file
formats |
|
| Customized
Map Data Sets |
 |
|
Prompt delivery
of customized map data sets |
|
Flexibility in meeting
clients' changing requirements |
|
Creation
of Network Data
Inventory |
 |
|
OSP data
creation and migration: trench, manhole
and hand hole details, and number and
alignment of ducts |
|
ISP data creation and
migration: facility and AS-Built drawings,
floor plans and rack layout |
|
Topographic
Map, Satellite
and Aerial Photograph Acquisition |
 |
|
Source data
including paper topographic maps, satellite
imagery, and aerial photographs |
|
Assist in obtaining the
necessary permissions for digitizing
from copyright sources |
|
Large in-house inventory
of maps and satellite images of regions
around the world |
|
Data
Optimization and
Maintenance Services |
 |
|
Topography
(land base) maintenance |
|
Network updating (work
order posting) |
|
Network conflation |
|
New fiber network creation |
|
