Gap filler sensors for SAS

机译：SAS的间隙填充传感器

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Like traditional side scan sonars, synthetic aperture sonar (SAS) systems have a coverage gap in an area directly underneath the sensor. Range resolution projected onto the seafloor deteriorates near the vertical, and objects do not cast shadows. Furthermore, to limit multipath in shallow water, some SAS systems do not transmit or receive at all near the vertical. It is difficult to come up with a sensor that can match the performance of a good SAS for the area around nadir - at least without increasing the cost and complexity of the system substantially, or imposing strict limits on operation. This paper investigates four possible technologies as gap fillers for SAS; acoustic as well as optical systems.

机译：像传统的侧面扫描声纳一样，合成孔径声纳（SAS）系统在传感器正下方的区域也具有覆盖间隙。投影到海底的距离分辨率在垂直附近变差，并且对象不会投射阴影。此外，为了限制浅水中的多径，某些SAS系统根本不在垂直方向上发送或接收信号。很难找到一种能够与天底附近区域的SAS性能相媲美的传感器-至少不显着增加系统的成本和复杂性，或者不对操作施加严格的限制。本文研究了四种可能的技术来填补SAS的空白。声学和光学系统。

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来源
《OCEANS 2011》|2011年|p.1-6|共6页
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作者
Hagen Per Espen;
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中图分类海洋工程;
关键词
forward-looking sonar; gap filler; multibeam echo sounder; synthetic aperture sonar; underwater camera;

机译：前视声纳间隙填充多束回声测深仪合成孔径声纳水下摄像头;

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Gap filler sensors for SAS

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