|
Operating in near real-time, iHeave is able
to process F180 data online resulting in a processed heave file
being available for inclusion in multibeam bathymetric data processing,
only a few minutes after the end of the survey line. In conventional
heave scenarios where long period heave is not significant problem,
iHeave is able to generate higher accuracy heave data than achievable
in real-time.
|
|
| |
Input |
|
F180 MCOM on UDP/Ethernet direct from F180 (real-time,
high data rate, full information message) |
| |
|
|
|
| |
Output |
|
Modified MCOM format with time-tagged processed heave
recorded on-line to hard disk |
| |
|
|
|
| |
|
|
ASCII (processed heave values with time-tags) recorded
direct to hard disk |
| |
|
|
|
| |
|
|
NB all iHeave data is output to file with a maximum
latency of 350 seconds |
| |
|
|
|
|
|
|
| |
Accuracy |
|
5% of heave displacement or 5cm whichever is greater |
| |
|
|
|
| |
Online filter |
|
70 second (0.014Hz) heave filter operating online
in near real-time (350 second output latency) NB. 70
second filter is always used for online/near real time
processing to ensure that all available data is used
and subtle long period swells are not overlooked. |
| |
|
|
|
| |
Offline filter |
|
Selectable 30 or 70 second heave filter. Pre recorded
F180 MCOM data may be reprocessed offline for improved
heave characteristics
NB 30s offline filter operates with 150s latency.
|
| |
|
|
|
|
|
|
| |
General |
|
Fully integrated with standard F180 configuration
and display software for Windows (XP & 2000) |
| |
|
|
|
| |
Display |
|
Online graphical display of processed heave versus
corresponding real-time heave value
Bar-chart indicators of variation expressed as % and
cm |
| |
|
|
|
| |
Alarms |
|
On screen warnings when real time heave value diverges
from processed heave value, with user defined thresholds. |
| |
|
|
|
|
|
|
| |
Data converters |
|
MCOM to CSV converter (spreadsheet format) supplied
as standard |
| |
|
|
|
|
|
