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SSS buying sugestions
hello all,
this is my first post on this forum, but i am reading the threads since quite a long time, now made up my mind to ask for advice.
i am planning to buy a SSS that will be used to create an uderwater map of sloping bottom in one of the lakes, what is most important for me is:
- the picture of the slopes should be scalowable, rotable and zoomable (best would be the one consisting of points, rather than spots)
- as precise as possible
now, considering the above, i would like to ask for the general type of SSS suitable for that kind of operation, the model(s) should also allow:
- both sides scanning (instead of one-side, not obligatory but very welcomed - noone likes to go twice the same route)
- right under the surface towfish towing (the water surface is very calm, therefore i would like to create the map showing the very shallow areas as well)
- the angle of the swath (i am sorry for lamer's description) of 90degrees high (vertical) or as high as possible, allowing very shallow water scan (i.e. 1-5m deep)
- inwater towfish towing (f.e. 20m deep), allowing on further merging the shallow-water maps and the deep-water ones with software
any suggested models/brands? some "helpful" questions more:
- is towfish rotation allowed? instead of using short vertical swath (20-60deg high), maybe one can rotate the towfish and trim it in the way it is "watching" the area horizontally (parralel with water surface)?
- any mosaic software cooperating with suggested SSS? (able to process data from analog device into multi-point picture-web on pc screen, or colaboring with digital models, as highly welcomed in the begging of this post)
- which way of saving data is more practical? SD (or related) memory cards, or direct connection to onboard laptop (scanning will be done with 15m long motor boats/yahts, no problems with spacing/water inside)
- what is the maximum operational depth for such sonars, related to the purpose of survey - 20m deep is enough to merge down two images one from shallow area (1-20m deep) and one from deep area (20-40/50/60m deep)?
-towing speed (faster means better?) :P
-two bandwith usage - one really needs that?
this is my first post on this forum, but i am reading the threads since quite a long time, now made up my mind to ask for advice.
i am planning to buy a SSS that will be used to create an uderwater map of sloping bottom in one of the lakes, what is most important for me is:
- the picture of the slopes should be scalowable, rotable and zoomable (best would be the one consisting of points, rather than spots)
- as precise as possible
now, considering the above, i would like to ask for the general type of SSS suitable for that kind of operation, the model(s) should also allow:
- both sides scanning (instead of one-side, not obligatory but very welcomed - noone likes to go twice the same route)
- right under the surface towfish towing (the water surface is very calm, therefore i would like to create the map showing the very shallow areas as well)
- the angle of the swath (i am sorry for lamer's description) of 90degrees high (vertical) or as high as possible, allowing very shallow water scan (i.e. 1-5m deep)
- inwater towfish towing (f.e. 20m deep), allowing on further merging the shallow-water maps and the deep-water ones with software
any suggested models/brands? some "helpful" questions more:
- is towfish rotation allowed? instead of using short vertical swath (20-60deg high), maybe one can rotate the towfish and trim it in the way it is "watching" the area horizontally (parralel with water surface)?
- any mosaic software cooperating with suggested SSS? (able to process data from analog device into multi-point picture-web on pc screen, or colaboring with digital models, as highly welcomed in the begging of this post)
- which way of saving data is more practical? SD (or related) memory cards, or direct connection to onboard laptop (scanning will be done with 15m long motor boats/yahts, no problems with spacing/water inside)
- what is the maximum operational depth for such sonars, related to the purpose of survey - 20m deep is enough to merge down two images one from shallow area (1-20m deep) and one from deep area (20-40/50/60m deep)?
-towing speed (faster means better?) :P
-two bandwith usage - one really needs that?
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