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

• 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.)

• 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

Land slide monitoring system with GPS and net adjustment

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.