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RTKGPS deep and shallow measurement system
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GPS deep and shallow measurement
system, GPMate-ECHO is....
・Very accurate GPS data and the data from an ultrasonic wave depth
measurement device are synthesized in real-time.
・Measured data is accurately processed in real-time and both wake
and the depth of measured points are displayed on the monitor screen.
・The system enables you to confirm abnormal data at measurement sites
and enables you to reconfirm the measurement values.
・You no longer have to do any additional work for measurements at
your office with the system. |
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 Outline
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Real-time deep and shallow measurement
system is the system which is capable of synthesizing X/Y/Z produced
by Real-Time Kinematic (RTK) and Off the Fly (OTF) for precision survey
GPS. And the measurement values produced by ultrasonic depth measurement
devices without post-processing analysis.
The system is capable of recording three-dimensional data on a laptop
computer and is capable of displaying the data on the monitor screen.
GPS is installed at the designated point with coordinates on the fixed
point side and the GPS data is transmitted to the movable points continuously
via radio transmissions.
The GPS on the movable point side instantly analyses calculations
of its own data from the data received from the GPS on the fixed point
side. Then, it outputs the calculated data to a personal computer
or other device once every second by synthesizing the coordinates
as the outcome of the precision calculation of 2cm with the measurement
value from ultrasonic wave depth measurement devices.
The software installed in a personal computer converts coordinates
data to pubic and local coordinates data and displays the data as
graphics on the monitor display. The software also does data recording,
past data imaging displays, automatic setting of GPS, the calculation
of designated coordinates conversion, and GPS remote control.
As long as the GPS receiver you use is for NMEA, you can use it for
measurements regardless of the brand of the receiver.
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DGPS Block diagram |
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RTK- GPS block diagram |
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Base station
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Mobile station
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RTK tide place compensation |
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The height "A"
of the present mobile station antenna can measure it with relative
relations from the base station by the measurement which GPS was used
for when the coordinate height of the base station is set up in the
height of TP and the depth of water value from DL (0m) is measured.
The height "C" of the surface of the water is calculated
by input's (offset) doing height from the antenna to the surface of
the water "B" for the application at present.
Because the height "C" of the surface of the water is height
with TP at present, height from the surface of the water to TP (0m)
"D" can be calculated.
Depth from TP (0m) can be known if height from the surface of the
water to TP "D" is deducted from the depth of water value
"F" of the bathymeter.
Furthermore, the depth of water value from DL (0m) can be found by
input's (offset) doing height from TP (0m) to DL (0m) for the application
to record depth from DL (0m). |
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Performance |
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Measurement
(general)
This measurement is used for deep and shallow survey work including
displaying and recording GPS data and depth measurement devices.
Measurement (lines)
This measurement is used for deep and shallow measurement work along
with measurement lines. The measurement lines which are registered
in advance are displayed on the monitor screen. It is possible for
you to do reliable work by operating a measurement boat along with
the measurement lines on the monitor screen.
Tracking (Guidance)
Since the relative relation between the coordinates which are registered
in advance and a target point is displayed on the monitor screen,
it is possible for you to reach the target point while watching the
monitor screen.
Record display
Past record can be displayed on the monitor screen exactly as they
were at the time of recording.
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GPS automatic setting (fixed
and movable points)
The software automatically does GPS settings by remote control via
a RS232C cable instead of being done with keys. *
Registration of measurement lines
Measurement lines are registered and displayed on a monitor screen
by registering the data of planned measurement lines in X and Y coordinates
Sketch registration
A simple sketch is displayed on a monitor screen by registering the
lines to be drawn in X and Y coordinates.
Tracking registration
X and Y coordinates of tracking is registered.
Coordinates conversion
Mutual coordinates calculation of WGS-84, Tokyo Datum, public and
local coordinates are accomplished.
* The makers which utilizes GPS automatic settings:
Leica, Novatel, Trimble (CSI, RS232C input/output device) |
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Movement environment
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Recommendation movement environment
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-Windows98、2000、ME、XP
- Pentium 3 /500MHz above
-Memory 128MB, as mentioned, (in case of 2000 and XP, the 256MB
above)
-RS-232C 2 port (for GPS, Echo-Sounder)
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-The miniature light weight
personal computer of the sub-notetype or the touch panel type
-Bathymeter : the depth of water data, the model (A manufacturer doesn't
ask it to it.) that the outside output is possible as a digital data
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JAPANESE
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