Surveying and Mapping
We provide a variety of surveying services with our cutting-edge
measurement technology. The technology enables us to offer
topographic and land-use maps, 3-D profile measurements
of ancient monuments, cultural properties and plant piping,
industrial precision measurements of nuclear plants and
particle accelerators, and topographic surveys or locating
for mobile units using GPS, all with the best possible accuracy.
We also provide data processing services for measurement
data already collected. For example, two sets of measurements
collected in different times can be used to derive secular
changes or stereo image pairs which can be used for 3-D
modeling.
Aerial photography and
mapping services
Topographic maps are a fundamental source
of land information that include natural features (e.g.
geomorphology, hydrology, vegetation, infrastructure such
as roads, cities and agricultural areas). These maps also
provide an indispensable base for the planning and design
of structures (e.g. dams, bridges and tunnels) and are used
in agricultural site selection, urban development planning
and rehabilitation projects, public administration (e.g.
fixed asset assessment and cadastral maps) and environmental
assessment.
We provide the following in Japan and overseas using conventional
aerial photography, satellite images and the latest airborne
digital sensors:
* preparation of digital orthophotos
* preparation of topographic maps/thematic maps/cadastral
maps/hazard maps
The scale of topographic maps depends on the purpose of
use.
* National base map: 1/25,000 – 1/50,000
* Global environment (rise in global sea level): 1/1,000,000
– 1/4,000,000
* National land use & land resource changes, overpopulation
or reduction of wildlife: 1/100,000 – 1/1,000,000
* Regional environmental deterioration due to structural
changes, wide-area disaster or pollution (e.g. earthquake,
flood, atmospheric pollution, marine pollution): 1/50,000
– 1/250,000
* Regional environmental deterioration due to urbanization,
local disaster or local environmental pollution (e.g. slope
collapse, noise): 1/10,000 – 1/50,000
Cultural heritage and archeological excavation
survey
PASCO’s technology contributes to the preservation of our
cultural heritage.
We promote activities in the field of collecting, safeguarding,
utilizing and distributing cultural heritage digital data.
Our support for excavation surveys and utilization of digital
data includes the following:
* dispatch of researchers, survey teams and assistants
to support excavations
* support from exploratory excavation to full scale study
(including reports)
* provision of excavation survey support system (digital
measurement system)
* measuring and tracing of archeological finds (hand measurement
and digital auto measurement)
* digitization and creation of data base of existing drawings
and maps
* excavation information management system (digitization
of inventories/creation of data base/GIS establishment)
* digitization of reports and publication on CD-ROM
* 3D photogrammetric surveys and image analysis
* maintenance of historical sites and support for surveying,
measuring and plotting (e.g. plotting of stone castle walls)
* 3D laser measurement and digital archive of cultural heritage
(This technology is utilized especially in safeguarding
the world heritage.)
Overseas activities
We conducted 3D laser measurement to safeguard the Bamiyan
site in 2003 within the framework of UNESCO’s Japanese Funds-in-Trust
project as follows:
* preparation of a topographic map at a scale of 1/1,000
covering an area 3 km by 5 km of the Bamiyan valley and
surroundings
* preparation of a three-dimensional relief model and orthoimages
of the Bamiyan Cliffs with their large niches, including
the side and back walls of both the east and west niches,
Foladi Cliffs, Kakrat Cliffs and the caves carved into the
Bamiyan Cliffs, by 3D laser scanning.
Precise measurement
PASCO’s surveying technology has won a high reputation
for reliability in the field of precision surveying which
is necessary for industrial surveying and the investigation
of displacement of large structures.
PASCO has a long record of achievements in erosion-control
investigation for dams, tunnels, bridges and landslides,
and PASCO’s unique technology has played an important role
in major scientific projects requiring precise positioning,
such as alignment of particle accelerators, establishment
of heliographs for the national astronomical observatory
and surveying for construction of the linear motorcar.
Automated landslide measurement system
Our automatic GPS land slide monitoring system "PAL2001"
observes land slides and other minute movements in large
structures like dams on a real-time basis. The system is
based on a static positioning technique that uses GPS to
provide high-precision monitoring. The casing contains a
digital ground inclinometer and extensometer as well as
the GPS equipment. These instruments enable PAL2001 to perform
not only GPS monitoring but also different kinds of observation.
The observation data is transmitted to a monitor station
via an integrated communications system. In the monitor
station, data is received via the Web-GIS network or LAN
and can be displayed or printed out as required, and in
this way we can manage the data remotely.
Precise industrial survey
PASCO can provide precise 3-D measurements on facilities
in your plant and faithfully reproduce modeling of the current
status in different formats.
The 3-D measurement data is very useful when looking at
how to improve your plant facilities; for example to replace
or rearrange a production line. We select the best combination
of measuring devices to use for the job, while taking into
account the time constrains, site conditions, measurement
accuracy required, its application, measurement targets,
and other such necessary factors. The acquired data is available
in several formats to suit to your application (2-D drawing,
stereograph, texture mapping, format conversion, etc.)
House location information updating services
PASCO recently developed a technique which can automatically
track the dimensional change of a house between, before,
and after an extension or reconstruction. If two sets of
measurement data on the same object collected at two different
times are available, we are able to identify any changes.
Aerial photos or sensor-captured data is used to discover
any variations. Furthermore, it is even possible to 3-dimensionaly
extract a variation over two different times through the
automatic creation of a 3-D digital surface model (DSM)
from a stereo image pair. There is also another convenient
technique for automatically removing shade and shadow between
tall buildings, which is always a problem in aerial photos.
