The information herein applies to the EM , EM , EM , EM , EM A datagram format for Sonar Head depth is provided for the EM , EM. Enquire about the The Kongsberg EM Multibeam Echo Sounder online today at Unique Group, wide range of Multibeam Echo Sounders available now. The EM is a new advanced multibeam echo sounder with extremely high resolution and dynamically focused beams. It is very well suited for detailed.
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By default this option is enabled but it can be disabled if necessary through the registry key: This pulse is half a second long so when the wrong active flank is chosen timing can be off by half a second. D datagram for position kpngsberg footprints C datagram to determine internal EM clock drift and offset. The drawing below shows a schematic overview of the acoustic center. If no clock messages are sent then the driver will not decode any bathymetric data. When online, select the kongsbefg settings” option from the “Settings” menu to define the online blocking and filtering of the multibeam echosounder data.
The QINSy driver will e,3002 invalid beams, by resetting all values to 0, except for quality factor and intensity, which are set to the invalid values according to the EMx manual, i. DbSetup example for Simrad Compact system. QPS advises however to keep this enabled. The Beam angles that are reported in the F telegrams are valid in the receive array and not in the acoustic center.
For amplitude bottom tracked beams this value stands for the used number of samples while for phase bottom tracked beams this value stands for the “fit”.
The Kongsberg EM 3002 Multibeam Echo Sounder
Note that choosing the valid flank is not very relevant for very short PPS pulses e. Recommended Mode F datagram for raw ranges and angles C datagram to identify the serial number from the main head R datagram for raw bathymetry storage as of QINSy version 8 the offset from the clock telegram is no longer used for the EM X-Y-Z mode D datagram for position of footprints C datagram to determine internal EM clock drift and offset “Raw-Data” D datagram is identical to ordinary D datagram except that some variables like for example the beam depression angle are now attitude-uncompensated launching angles.
This is done to prevent latency related errors. Only the beam numbers are different. In order to be able to test the network connection it is advised to add a line to the ‘host’ file using the following format:.
EM 3002 Multibeam echo sounder
F datagram for raw ranges and angles C datagram to identify the serial number from the main head R datagram for raw bathymetry storage as of QINSy kongwberg 8 the offset from the kongserg telegram is no longer used for the EM An EMD system must be kongsbefg in Database Setup as two single EM Multibeam systems that have a node position and unique mounting angles per transducer.
Online When online, select the “Echosounder settings” option from the “Settings” menu to define the online blocking and filtering of the multibeam echosounder data.
The IP-address and port number are for the machine to which these datagrams are to be sent. In normal mode, the driver decodes the first beams from the telegrams, while with Kongsverg II option enabled, it decodes the second beams Only a limited number of packets will be stored: Refer to the GPS Manufacturer manual to see which is the active flank. The driver will correct the reported beam angles so they are valid for the acoustic center.
See description in Database Setup, except that the present QINSy driver is only meant for datagrams broadcast over a network, so instead of entering serial port parameters, the port number has to be entered.
Launch angle correction can be calculated by comparing the used sound velocity reported by the multibeam system with the actually measured sound velocity. This limitation is activated as soon as the kongsberv clock datagram arrives. So for test purposes it is possible to use this driver without receiving the clock telegram but never use it like this operationally.
Invalid beams are restored to the MBE data buffer, with all values set to 0, except quality factor FFh and intensity 7Fh. This non-conformity will result in small depth independent depth errors at the outer beams.
Acoustic center is 2. When Enabled the Raw original Bathymetry packets e.
This echosounder uses pitch compensation and therefore it requires the serial input of an attitude sensor EM binary format. The echosounder Stabilization is greyed out in the Database Setup because the output string already contains the information about whether the systems is stabilized or not.
Support EM Multibeam echosounder – Kongsberg Maritime
Driver will stop updating if no C clock datagrams are received for more than 30 seconds. F kongeberg f, D and R Runtime. It is important that the velocity entered is at transducer face depth when picking from a profile.
In order to obtain valid bathymetric results, the multibeam system and QINSy need valid speed of sound information. Choose one of the “Head II” systems to decode the beam data from the second transducer. Em002 supersede the command line parameters.
If the driver is started without the parameter it will start by default in Rho-Theta mode. The EM manuals will mention the acoustic center to be in the geometric center of the transducer face but this is not exactly true: Each head has beams starting with 1 at the port side of the matching transducer.
In order to activate the transmission, one should do the following: For kongwberg TPU calculation the minimum steering angle can be defined. Important Kongsbfrg will stop updating if no C clock datagrams are received for more than 30 seconds. Acoustic Center is 1.
Data sheet – EM Multibeam echo sounder – Kongsberg Maritime
Decoding Notes Driver will always output the decoded maximum number of beams with a maximum ofEM Real-time sound velocity fed into Multibeam Unit If the sound velocity can be interfaced real-time into the multibeam system then the beam angles that are reported by the system to QINSy are correct and no further angle correction is required.
The Acoustic center is the point for which the node position must be entered into the QINSy database.
The clock datagram is used to identify the main transducer head’s serial number and therefore the clock message must always be activated. No real time sound velocity QINSy only supports beam angle corrections when a sound velocity probe is interfaced. In DbSetup for this driver some driver specific settings can be entered.