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The internal AHRS is pre-calibrated.

Deploying a transponder on the seabed and record Gaps M5 data during a circle and an "8-

shape" trajectory is a good way to check the system operational accuracy. Considering the

median transponder position is the reality, you will check the position dispersion and accu-

racy.

In shallow water, the Gaps M7 will be at least two time better than Gaps M5 in X/Y estima-

tion, and 5 times better on depth estimation due to its antenna geometry and higher-grade

hydrophones.

Gaps M5 can be interfaced to DP systems by delivering, through a serial or ethernet link,

transponder relative position (USBL) from one transponder deployed on the seabed and

vessel absolute position (LBL) when at least 3 transponders are deployed. Gaps M5 is an

effective acoustic part for dynamic positioning DP2 and DP3 in shallow water.

Gaps M5 embeds an AHRS Octans Nano. It automatically compensates the vessel move

for attitude and heading.

There is no established limitation of the sea state, the internal AHRS compensates the ves-

sel use. In case of strong wave condition, we adise to mount the Gaps a bit deeper to avoid

air buble issue.

Содержание Gaps M5

Страница 1: ......

Страница 2: ...E GAPS SYSTEMS THE MOST ADAPTED FOR SHALLOW WATER 8 1 16 WHICH NAVIGATION SOFTWARES ARE COMPATIBLE WITH GAPS M7 AND M5 8 1 17 DO I NEED TO MEASURE THE SOUND VELOCITY PROFILE 9 1 18 HOW TO OPTIMIZE GAP...

Страница 3: ...THE UNDERWATER POSITION IS NOT GOOD OR FAR AWAY FROM THE ACTUAL POSITION 13 A 1 17 IF POSITION IS UNSTABLE IN VERY SHALLOW WATERS WHAT WILL BE THE DIFFERENCE PERFORMANCE WISE BETWEEN GAPS M5 AND M7 1...

Страница 4: ...TO MY MBES DOES IT INCLUDE HEAVE 15 A 1 37 DOES IT SUPPORT THIRD PARTY SYSTEMS LIKE CNODE HPR OR SONARDYNE WB 16 A 1 38 DO WE NEED AN UPGRADE FOR WB1 OR IS IT A STANDARD FUNCTION 16 A 1 39 IF NO SCOPE...

Страница 5: ...n for Gaps as it is pre calibrated at our factory with Phins Octans inside This will save a lot of time for users and Gaps can be operational in less than an hour The important point to know is that i...

Страница 6: ...th isopropylic alcohol 5 Wet the surface with aliphatic hydrocarbon solvent 6 Wait for 2 minutes to dry 7 Apply anti fouling according to the manufacturer s recommendations a thin coating 8 Wait for 2...

Страница 7: ...nal to Noise Ratio This Signal to Noise Ratio depends on the beacon transmit level the range to the beacon the noise level and the vertical angle In best case SNR_in 20 dB and in vertical conditions t...

Страница 8: ...ion of Cat 5 Ethernet maximum length If longer distances are required between Gaps head and Gaps box it is possible to connect 2 x 95 m cables through a repeater box total length is then 190 m The ref...

Страница 9: ...horizontal distance between Gaps and source of noise increase Gaps depth If positions are jumpy this probably comes from a multipath reflective surface which is too close from the Gaps M7 or M5 or th...

Страница 10: ...d and the beacon transducer If the Gaps M7 M5 to GPS lever arm is small 5 m Gaps mounting misalignment has low impact If the Gaps M7 M5 to GPS lever is bigger it may have an impact and it is recom men...

Страница 11: ...seconds window Position cycle is default 1 seconds and increased by 5 seconds to allow the beacon to process the data and receive the reply Yes Gaps M5 acoustic communication is telemetry which is a...

Страница 12: ...minal No Gaps M5 is an export free system Gaps M7 is the solution for longer range tracking There is a little accuracy decrease with the elevation angle especially in the target depth estimation Tilti...

Страница 13: ...ry and higher grade hydrophones Gaps M5 can be interfaced to DP systems by delivering through a serial or ethernet link transponder relative position USBL from one transponder deployed on the seabed a...

Страница 14: ...utput data format is given in the user manual This communication is interlaced with the positioning cycle SVP data is loaded into Gaps M5 manual from the MMI or by loading a SVP file Gaps M5 web MMI s...

Страница 15: ...nsure good performances The less the lever arms are the less the error will be We advise to mount the GNSS antenna right above the Gaps head when possible Yes Gaps M5 and Gaps M7 use the same cable av...

Страница 16: ...ng with Cymbal is not in the product development roadmap Gaps M5 first units will be delivered at the beginning of July 2020 You can contact your rental company for futher information Using a flush or...