Measuring Technologies
PASCO has, since its foundation as an aerial
surveying company in 1953, always used the most advanced
technology available at the time to measure events on the
Earth with high quality and accuracy.We believe it is essential
to always maintain the most advanced measurement technology
in order to provide optimal solutions to customers. With
our outstanding technology, the best approach can be selected
from a wider possible range to provide a precise high-quality
surveying service.Objects measured by us include topographic
features, building profiles, road equipment, large structures
including bridges and dams, outdoor urban spaces, indoor
spaces such as offices, underground shopping malls and plants,
and even the geography of ocean and lake beds.
Airborne laser surveying
system: ALS50
Aerial 3-D survey from 2,000 meters above
the ground with a 15 cm vertical resolution
LIDAR Sensor(ALS50)
Our laser surveying directly acquires 3-D data with a vertical
accuracy to within 15 cm. This technology is typically used
for high-accuracy 3-D modeling of urban areas to reproduce
a vivid image of the real landscape.
The advantages of this technology have also been shown
in surveying the scope of damage after disasters, such as
slope failure.
Narrow multibeam sonar exploration system
Precise ship-borne 3-D measurement of ocean and lake
bed topography
Our marine (ship-borne) multibeam sonar system can collect
strips of data for underwater topography covering a width
three to four times the depth of water at a time.
The data processing has been greatly compressed to provide
a vertical resolution of 6 mm and a horizontal resolution
of between 5 to 10 cm. This very accurate topographic data
can be used effectively in the management of dams or port
facilities, such as when surveying silting in dams or the
degree of deterioration of breakwaters.
[Applications]
* Analysis of deterioration/damage to breakwaters and
other port facilities
* Analysis of the condition of dredging around dams/ports
or planning for dredging work
* Analysis of existing fish bank installations or selection
of appropriate sites for fish banks or seaweed beds
* Analysis of existing submarine cable installations or
selection of appropriate sites for installing cables
* Locating objects that have sunk to the ocean or lake bed
due to an accident or unauthorized dumping
Multiline digital airborne sensor system:
ADS40
Seamless scanning of the surface of the
Earth with a 20 cm resolution
Airbone Digital Sensor(ADS40)
The airborne sensor captures images in three directions:
forwards, downwards and backwards in order to create seamless
aerial imagery with a ground resolution of 20 cm.
The sensor collects digital data in the form of strips
of imagery, rather like a scanner reading the Earth’s surface.
The imaged data, collected from the same aerial position
at the same time in the same environment, can be effectively
used for 3-D modeling or a broad variety of different applications.
Large format digital aerial camera: UltraCamD
Aerial survey from 560 meters above the
ground with a 5cm resolution
Large Format Digital Aerial Camera(UltralCam-D)
Our digital area sensor acquires highly
accurate aerial photographic data from approximately 560
meters above the ground up to a 5 cm resolution.
The Centerline on roads and pedestrian crossings, electric
wires, and even their shadows thrown on the ground, will
appear clearly in the photographs.
The high-resolution digital area sensor can provide digital
mapping at a 1:500 scale, which could not be done with previous
digital sensors. This also means a significant reduction
in the time needed to complete any digital mapping work.
Hyperspectral sensor: AISA (Eagle &
Hawk)
Surveying plant activity and materials
Aerial surveys also identify a wide variety of materials
on the ground. For example, our hyperspectral sensors can
measure the amount of chlorophyll in plants to determine
their level of activity, something that is invisible to
the naked eye.
Sensors can also measure the amount of protein contained
in rice plants, thus indicating how ripe the crops are.
From these aerial measurements of material on the ground,
we are able to offer new solutions for environmental or
agricultural issues.
We are currently making a bold attempt to study reflection
characteristics, which are not yet fully understood, and
will continue developing new solutions
Thermal sensor: TABI
Measurement of the Earth’s surface temperature to within
an accuracy of 0.1°C
We can measure the Earth’s surface temperature from about
1,000 meters above the ground to within an accuracy of 0.1°C.
Even dangerous areas which are normally inaccessible, such
as volcanoes, can be covered by this technology, and the
temperature distribution on the ground can be precisely
identified.
Temperature measurements carried out from 1,000 meters
above the ground can be done to within a 3 meter resolution,
and to a 1 meter resolution if done from 360 meters up.
This technology has been shown to advantageous in monitoring
the effects of industrial waste water, heat losses in manufacturing
plants, and heat islands, which are associated with global
warming and other serious issues.
Ground based 3D laser scanning system:
Cyrax 2500, Riegl LMS-Z210
Non-contact 3-D surface profiling
CYRAX
This instrument used for this type of surveying radiates
laser beams at a target object and measures the time required
for the reflected return beams, thus determining the exact
profile of the object.
An object 100 meters away can be profiled to an accuracy
of ± 2 to 6 mm. An object 350 meters away can be mapped
using wide-angle scanning up to 300°. The instrument is
well-suited to measure locations which are not easily accessible,
objects that it is not easy to gain contact with, or complex
terrains.
It also provides highly accurate quick mapping or modeling
of ancient monuments, cultural properties, and large building
structures.
Road surveying system: REAL
Simultaneous survey of various road conditions
REAL
Our onboard road survey system 'REAL' uses the latest surveying
technology to provide sophisticated monitoring of road conditions.
REAL is capable of acquiring three sets of road image data
at a time in a single pass of the vehicle: the condition
of the pavement, the location and shape of the road, and
the road facilities. This road survey can be done at normal
driving speeds (up to 100 km/h) due to its consistent digital
data processing.
REAL allows us to efficiently collect a range of accurate
information in a relatively short time without having to
choose a timeslot for the survey.
High precision and intelligent GPS (HI-GPS)
Onboard vehicle communications equipment
with high-precision GPS
High precision and intelligent GPS(HI-GPS)
HI-GPS 1000 is an OS-based GPS terminal for acquiring
high-precision positional information that is about 10 times
more than the existing highly sensitive GPS terminal.
With its GPS module integrated into the Linux OS, the product
serves as not only a GPS receiver but also as a transmitter.
It allows us to download data acquired by the terminal or
to change the terminal settings anywhere via the Internet.
The product can, for example, be used to acquire high-precision
fractional trail data.
