Eiva KB

Inputting two logging control interfaces into NaviScan

Ole Kristensen — Thu, 02 Feb 2012 17:19:20 GMT

I am trying to input both EVIA run line control and Nav settings to NaviScan into NaviScan through the Logging Control Instrument. But NaviScan will only allow me to input one Logging Control instrument. Is there a way to use both of this logging control instruments?

Kind Regards,

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Hey

There is no reason (and no possibilities) to use two of those - the Nav Settings should also include the runline control part

See http://download.eiva.dk/online-training/NaviPac%20Manuals/Various/NP_NS.pdf

Recalculate USBL

Hans K. Pedersen — Mon, 30 Jan 2012 14:31:45 GMT

To recalculate the USBL positions after editing of the typically noisy Dynamics Offsets, the JobPlanners Recalculate USBL action should be used.

A typically work flow is sketched below:

1) Edit the Dynamic Offsets for the USBL-positioned object with the DataEditor. The Median Spike Detection Filter is good at this. Note this filter is working on one component of the USBL Vector (the Dynamic Offset) at the time, but when spikes are deleted the two other components are also deleted. The filter can be applied on the other two components afterwards:

2) Save the DataEditor editing.

3) Use the JobPlanner to Recalculate the USBL positions. This is done by selecting either the vessel block (which will recalculate USBL positions for all depended objects) or the USBL-positioned block itself.

4) Reopens the recalculated USBL-positioned block in the DataEditor to verify or further edit the recalculated positions.

Utilizing Doppler Corrected Position in Helmsmen Display

Ole Kristensen — Fri, 20 Jan 2012 15:04:43 GMT

Was wondering how I can utilize the a Doppler corrected position in NaviPac. I am using an RDI Workhorse doppler and have it attached to the main survey ROV. But I am wondering how I can display the doppler corrected position in Helmsmen Display rather then the USBL raw positions. On object shows up with the doppler corrected positions (UHD 61 DL Fit-311) but I am unsure how to actually use this position or output to external sources.
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For all output's and displays you must go in and select the objject - and thus define if it's using the raw USBL or the DVL filtered object.
Please note that for NaviScan you should use the raw - or perhaps event better send both the raw and the DVL filtered

RDI Doppler

Ole Kristensen — Fri, 20 Jan 2012 11:06:36 GMT

My questions concern's utilizing a workhorse RDI doppler to "smooth" USBL positions.

!. How can you calibrate an RDI Doppler in NaviPac, or can you?

2. How do I ensure that I am using the corrected doppler positions rather then the USBL positions?

3. When utilizing NaviScan for collection of Multi-Beam data, how can I ensure that NaviScan uses the corrected doppler positions rather then the sometimes jumpy USBL positions?

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Both NaviPac and NaviScan includes a DVL Calibration program. Itloads the recorded files (Survey files in NaviPac and SBD files from NaviScan) and allows you to estimate the mounting errors.

Similar function can be found in NaviEdit data editor

In NaviPac you assign the DVL to an object - eg. ROV. A second object will be created called ROV: DL Fitlered - this second represents the Kalman Filtered position with the DVL used.
Make sure that you send the raw position to NaviScan - not the filtered. Instead interface the DVL into NaviScan.
In NaviEdit you will then use the DVL data in the Kalman Filter to obtain the best result

Output of data strings / CSV formats from Eiva to other sensors

Ole Kristensen — Thu, 12 Jan 2012 14:49:50 GMT

We are using EIVA NaviPac and have been requested bya client to output to their logging system the data we are inputting and logging from an ROV.

They are requesting from the ROV the following data and what the formats can be

1. Can we take the data data as: serial (RS232, 9800, N, 8,1 or alternatively TCIP/ UDP over a LAN ?

>> if RS232, how many cables, one , two or three? what data is on each cable?

2) Can we have sample data sentences so we can see exactly the headers used, required are:
Date >> and time format, comma or space separation, E or S in the lat long, number of decimal points, and what End of Line character is used.

The ROV Position sentence should contain the following information

>> $xxxx (header) , date of fix, time of fix (UTC), latitude, longitude, ROV depth, ROV altitude, ROV heading, ROV Pitch, ROV roll,<CR>

>> for example on the last project we received one sentence with everything in it as

>> $PISE,yyyymmdd,hhmmss.ss,dd.dddddd,N,ddd.dddddd,E,mmmm.mm,mm.m,ddd.d,

>> dd.d,dd.d<CR>

>> ie

>> header, date, time (UTC), Latitude, North, Longitude, E, ROV Depth,

>> ROV Altitude, ROV heading, ROV Pitch, ROV Roll<CR>

>> or we can accept multiple sentences as something like

>> $GPZDA with date and time

>> $GPGGA with ROV position

>> $ xxx with ROV depth, heading pitch, roll, altitude

I have not used the system for some time, but am sure that NaviPac can output CSV strings to other systems for logging, can you confirm that we can do this and if so, over LAN or as standard RS232
Can you also confirm we can send this all as one string and can you direct me to or provide the relevant page / instructions to set this up?

Regards

Jim Higgins

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The way way to obtain this is via the User Defined Output.

The output can be generated totally free and generate comma seperated string(s) consisting of raw str4ings, interpreted data and combined data as you wish.

The output's can be delivered on serial ports or UDP/IP network

See http://download.eiva.dk/online-training/NaviPac%20Manuals/Appendix/A1_User%20defined%20Outputs.pdf for details.

Updating the JobPlanners KP valeus are very slow

Hans K. Pedersen — Wed, 11 Jan 2012 17:53:16 GMT

If the updating of the JobPlanner KP minimum and maximum is very slow, the solution is probably to change the SQL Server settings to use TCP/IP only.

Slow JobPlanner KP updating:

Use the SQL Server Configuration Manager (found in Start Menu, All Programs, Microsoft SQL Server 20XX, Configuration Tools) to disable all other network protocols than TCP/IP and enabling the TCP/IP protocal.

And

A restart of the SQL Server is needed for these changes to apply

How to remove swell artefacts?

Alex Andersen — Wed, 04 Jan 2012 16:44:19 GMT

How do we handle swell on bathy generated from surface waves on ROV working at shallow water.

It gives a lot of bumps on the seabed which is wrong

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Reply #1

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This pdf describes various method for removing swell artefacts in eiva offline (naviedit)

Event Settigs (Trigger)

Ole Kristensen — Tue, 27 Dec 2011 12:59:14 GMT

Can I set trigger pre time more than 999 ms, for example 1500 ms?

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Yes the settings seems to accept that - but please note that the pre-trigger shall be sufficient small compared to the time between the events as it otherwise will introduce potential noise

Decoding NMEA $PSXRAD.

Ole Kristensen — Sat, 10 Dec 2011 14:38:22 GMT

What NaviPac InstXXX.dll will decode the Kongsberg $PSXRAD string? The best option on the instrument list was "Fanbeam" & this only takes transponder number, range & bearing,there is no account taken of slant height. If there is no .dll suitable, how do I create a custom input to take the TID & Vertical angle into NaviPac?

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There is no standard driver for this in NaviPac.

You might decode the string by using a user defined data acq input - but it will only be for display and recoding - not as a positioning system

How does NaviEdit handle a domain based network with Microsoft SQL Server

Hans K. Pedersen — Thu, 08 Dec 2011 16:27:39 GMT

The locally installed SQL Server normally runs under the Local System Account, which means the that access is restricted to locally defined users only. When a PC is member of a windows domain, and the users are logged in as domain users, the accounts are not local anymore. In this case domain users are denied access to the SQL Server/NaviEdit database.

Two solutions exist:

Make the domain user a local administrator.
Create a login for the domain user within the SQL Server and grant domain users access to to the SQL Server (see attachment).

In the following three different ways are given to grant the domain user administrative rights to the SQL Server:

Use the SQL Server Management Studio

Give the user a login:

And give the user administrative rights to the SQL Server:

This can also be done by a command line from Microsoft SQL Server Management Studio, after 'DomainName' and 'DomainUser' have been substituted with your domain name and user names:

EXEC sp_grantlogin 'DomainName\DomainUser'
EXEC sp_addsrvrolemember 'DomainName\DomainUser', sysadmin

Use a bat file

A sample script have been provided. It demonstrates how to open access from the command line. To run the sample script, rename the script file extension from 'txt' to 'cmd'. The script should first be changed to reflect your domain name and user names.

A description of the commands needed to grant domain users access to the SQL Server:

To enable user ‘DomainUser’ on the domain ‘DomainName’ access to the SQL Server, without full access to all of the server computer, you should issue the following commands on the server where the SQL Server is installed. To do this you or your domain administrator should have administrative rights to the server where the SQL Server is installed:

osql -E -S (local) -Q"EXEC sp_grantlogin 'DomainName\DomainUser'"
osql -E -S (local) -Q"EXEC sp_addsrvrolemember 'DomainName\DomainUser', sysadmin"

This will grant the ‘DomainUser’ administrative access to the SQL Server without granting the ‘DomainUser’ administrative access to the rest of the server.

Use SQL Server 2005 Surface Area Configuration

A third option to configure this for a SQL Server 2005 Express edition is to use the SQL Server 2005 Surface Area Configuration to grant a user administrative rights to the SQL Server:

Interfacing more than 1 dynamic object for surface USBL

Ole Kristensen — Wed, 07 Dec 2011 08:59:54 GMT

I am trying to set up a USBL using more than 1 beacon on the seabed as surface reference.

So far I have managed to take position fixes on the beacons and added them to my surface navigation as "HiPAP - surface nav." objects. This allows me to add the HiPAP surface nav into my positioning system that I will use as the base position on which to reference the vessel.

However, NaviPac will only let me add one of the reference beacons which was created in the HiPAP surface nav.

Does anyone know how to interface more than 1 beacon at a time to improve vessel positioning??

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The NaviPac driver for surface positioning via USBL, where you put a reference transponder on the seabed and navigate relative to this is unfortunately only supporting 1 transponder in action.

An small note on the use (old screendumps) can be found at

http://download.eiva.dk/online-training/NaviPac%20Manuals/Various/USBLforSurfNav.pdf

Does Eivas software suite work with Windows 7

Ole Kristensen — Tue, 06 Dec 2011 16:48:25 GMT

We have currently tested the following modules on Win7 32 Bit

NaviPac                OK
NaviScan              OK
NaviEdit                OK
NaviModel3            OK
NaviPlot                OK

We have also tested the software on 64 bit - and they are all performing OK. But you must be aware that especially the .NET applications (EIVAStat, ReportGenerator, etc.) may require that special .NET 64 bit support has to be installed. Use the add-on installer NaviPac36Addons.exe for NaviPac .NET modules (both 32 and 64 bit).

On the 64 bit OS you need to install a special 64 bit version of the WIBU key driver.

NaviModel version 3.2 supports a full 64 bit version which also uses special 64 bit adressing - and thus supports the use of more RAM.

Please note that Win7 uses more user rights control, and some additional control is needed to utilise full SW usage.

Please see http://download.eiva.dk/online-training/Eiva_Software_with_Windows_7.pdf

SPS Export

Ole Kristensen — Tue, 22 Nov 2011 12:44:21 GMT

Hi, I work on an a TZ seismic crew and we are using NaviPac for all the marine navigation and we cant get it to export an .SPS file. We do have an event.log and a NPD. But I need a .SPS if anyone knows how to do it please let me know. We are playing with the custom logging tab and getting some luck but it changes everything around and does not import line name.

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Hello Henry

NaviPac is not generating SPS - only UKOOA P2/94

You might try to load the data into NaviEdit (assuming that you have a NaviEdit license - which we normmaly do with seismic solutions). NaviEdit includes a special SPS export function

Navipac Manual Event

Ole Kristensen — Tue, 11 Oct 2011 08:42:29 GMT

In Navipac Online>Events option ManualEvent is inactive (grey). How can I enable it?

In event settings, events controlled by vessel, if it important

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The Manual evcents can only be performed on the master PC, on all remotes it will be greyed out

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Alternatively it can happen because it believes that it’s a slave

To check this please open the NAVIPAC.INI fil from the \Windows directory

Find the section

[online]

And check that the line starting with SLAVE looks like:

SLAVE=0

This can be the case if the pc has been used to a slave pc previously

Laser scanner support

Ole Kristensen — Mon, 10 Oct 2011 12:49:04 GMT

Hello

Does NaviPac and NaviScan support dataacquisition with a laserscanner (e.g. Z+F Profiler 5006)?

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We do currently not support Laser scanners in NaviScan, but it is on our SW RoadMap

Unable to open the physical file during Attach or New NaviEdit database

Hans K. Pedersen — Mon, 12 Sep 2011 14:26:33 GMT

If you get this error during 'Create New Database' or 'Attach Database' from the JobPlanner:

The solution is to either disable the Windows 7 User Account Control, or increase the permissions on the directory where the new database should be created, in case of 'Create New Database', or increase the permissions on the directory where the database files to be attached reside, in case of 'Attach NaviEdit Database'.

Disabling the 'User Account Control' in Windows 7 is done from Control Panel, System and Security, Action Center, 'Change User Account Control Settings'. The 'notification bar' should be lowered to 'Never notify'. A computer restart is needed for this change to apply.

The file permissions of the directory where a new NaviEdit database should be created or from where an old NaviEdit database should be attached can be changed by right clicking the directory, selecting Properites and choosing the Security tab and giving the 'Authenticated Users' group name 'Full control' to the selected directory:

ROV height (depth)

Ole Kristensen — Wed, 24 Aug 2011 15:37:56 GMT

Hi all,

We are using a depth sensor on ROV, it is entered to EIVA and recognized OK. But when I display ROV height from "dynamic object display", the height is calculated from Z value of the USBL beacon. How to force Navipac to calculate ROV height using a depth sensor and where can I select to use depth sensor or Z value for height calculation?

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Reply #1
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The display Z on the Helmsman's Display (and in object position view) is always based on the positioning system, as we consider this a 3D position information.

If you have assigned a bathy sensor to the object, then this value will be recorded as the primary depth information

If you need to display the bathy depth on the HD, then just follow the steps
- Open a seconds dynamic object view
- Select the position object named as the bathy sensor - No 7XXX or higher
- Select the Dat0 data item

Mother objects?

Ole Kristensen — Wed, 24 Aug 2011 15:31:56 GMT

Hello,

I have a question regarding position fixing under NaviPac. I am used to another software so please forgive if this is too elementary however I need to know as soon as possible. Basically, we are planning to take a fix using the aframe of the vessel in relation to vsl CRP. How do I ensure it is being referenced from CRP and not something else, like an antenna?

Thanks in advance!

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An userdefined offset is always assigned to a mother object. The best way to check this is by opening NPConfig and selecting the object in the

The "Relative to" identifies the name of the mother object - where the term Vessel most often corresponds to the vessel CRP.

How do I force Navipac to do a "manual start" in NPConfig

Ole Kristensen — Mon, 15 Aug 2011 16:15:48 GMT

Symptoms

The old setup program contains two start buttons (the rockets) for manual and warm start. NPConfig includes only a start button.

Cause

The idea behind manual and warm start was original that the operator should use warm start whenever possible and only use the manual start in case of configuration changes. But it turned out that operators most often took the first button (the manual start) and lost operational time due to a lot of questions and manual setup.

In NPConfig it was decided that we only should have one button - and let the system perform a warm start if possible - or a cold start if that was required.

Resolution

In NPConfig, expand "File Header" branch, right-click "DB Version" and choose "manual start"

NaviPac time format - 12 hour vs. 24 hour

Brian J.O. Justesen — Thu, 21 Jul 2011 10:09:01 GMT

The time in NaviPac is typically in the 12 hour format. You can verify this by opening a "Time & Date" view in the Helmsman's Display.

To switch to 24 hour time, the way that time is displayed by Windows has to be changed and how to do that, varies between the different Windows versions.

1) In Windows 7 select "Control Panel -> Region and Language -> Formats -> Additional settings... -> Time"

2) In Windows XP select "Control Panel -> Regional Settings -> Time -> Customize..."

Then simply change from lower h to capital H, to tell windows to use the 24 hour format. This also changes the time displayed in all the EIVA SW modules.

Format and use of geo-referenced images (Geotiff) in Helmsman's Display

Brian J.O. Justesen — Tue, 19 Jul 2011 15:29:03 GMT

Abstract

The Helmsman's Display (HD) has the ability to display geo-referenced raster images, also denoted geotiff in general. Along with the geotiff file, say mygeoimage.tif, a companion world file mygeoimage.tfw is expected (required), defining the world position and alignment of the raster image.

Definition of the World File (e.g. .tfw)

A world file is a plain text data file used by geographic information systems to geo-reference raster map images. World files do not specify a coordinate system as this information is generally stored somewhere else in the raster file itself or in another companion file.

The generic meaning of world file parameters are:

Line 1: pixel size in the x-direction in map units/pixel, e.g. meters/pixel
Line 2: 0.0
Line 3: 0.0
Line 4: pixel size in the y-direction in map units/pixel, e.g. meters/pixel (almost always negative!)
Line 5: x-coordinate (Easting) of the center of the upper left pixel, e.g. in meters
Line 6: y-coordinate (Northing) of the center of the upper left pixel, e.g. in meters

Example of a world parameter file, e.g. mygeoimage.tfw:

43.350494246893199000.000000000000000000.00000000000000000-43.74278455059451400568649.704895173430000005765288.25533308000000000

For further infomation about world files in general, or world files in special where an image needs to be aligned with the current map alignment (rotated) then see the official wikipedia description: http://en.wikipedia.org/wiki/World_file

Geotiff in Praxis

In HD the geo-referenced image file (not the companion world parameter file!) may be drag and dropped directly onto the map view (or loaded as a normal .dtm). If first time opening, the image file will be indexed, i.e. quadtree divided into ever smaller quads, making handling of large raster images seamlessly and fast. The indexing will produce a new SQL based file, with the name of the original file appended with the .db extension, e.g. mygeoimage.tif.db. If second+ time opening, the corresponding .db file will then be loaded instead of the original geotiff file! Hence, in case of a needed reindexing, just delete the derived .db file.

General Notes

The companion world file is not always needed, but this special case only applies to .tif images with embedded world parameters (a possible provided companion world file has higher priority than possible embedded world parameters!). A substantial number of other raster image formats are supported, e.g. .bmp and .jpg. But in these cases the required world parameter file is named .bpw and .jpw, respectively.

Contact EIVA (support@eiva.dk) for further information.

Output of raw data

Ole Kristensen — Sat, 16 Jul 2011 09:54:08 GMT

We are about to do a Field Gradient survey and need to get the datastring up to the Pmac computer on the bridge. The only way to do this is through the ROV comtrols connected to the NaviPac PC. Therefore we have the raw string coming into the NP computer through data aquisition and what I need to do is output this exact string to the Pmac computer. How do I do this?

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In the user defined output there is an item called "Raw instrument data" - use that and select the data input in the detailed setup. That should hopefully do the trick

How do I assign a beacon depth as a depth measurement to an object?

Ole Kristensen — Tue, 07 Jun 2011 09:25:00 GMT

If a data acquisition input is assigned to the object - then the data will automatically be assigned to the object

I tried to send overlay containing date, time, easting, northing, gyro, kp, dol to ROV overlay unit (netMC Marine) but unable to find a specific way to do it. Ive tried in user defined output, but the overlay unit display raw data in the scratch page of the overlay unit. At the moment, we only use data to LL video overlay. Which only display date, time, easting, northing only. I saw in the website said that netMC marine overlay already have driver within EIVA navipac. Pls refer to fol

Ole Kristensen — Tue, 07 Jun 2011 09:21:00 GMT

The NEtMC uses the same commands as the Liebnits Lan overlay - so you must output some special characters for clear-screen and new-line

In the user defined output this is done via the free text, binary and entering the code

ASCII 21: Clear Screen

ASCII 19: NEW LINE

In Navi PAC is there a setting to accept non differential Gps status one.I am doing some testing so do want to pay for diff corrections just yet.

Ole Kristensen — Tue, 07 Jun 2011 09:16:00 GMT

You can activate Options, Global Parameteres from NPConfig (or setup in older versions) - in the GPS settinngs you may define the global level for this