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首页> 外文会议>OCEANS 2011 >The influence of ship motion on bathymetric sonar performance in FM mode of operation
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The influence of ship motion on bathymetric sonar performance in FM mode of operation

机译：FM操作模式下船舶运动对测深声纳性能的影响

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The application of Frequency Modulated (FM) signals promises the following essential improvement of bathymetric sonar performance: (1) increase of swath width obtained because of the greater amount of energy radiated in the water, (2) better range resolution at long ranges caused by the independence between pulse length and spectral frequency pass-band, (3) possibility of multi-ping operation, and (4) better anti-interference features caused by matched filtering. While these benefits are attractive, there are additional constraints induced by the use of FM signals. The important factors that should be taken into account are ship motions (roll, pitch and yaw), ship speed, its trajectory and heading. All of these factors may worsen the performance so their effect on the system must be mitigated. The paper consists of two parts. In the first part we investigate the selection of FM parameters when motion and movement information is not available to the sonar system. In this case, the implementation of FM signals can be simplified but the benefit of this technology will not be maximum. The second part of the paper is devoted to the problem of efficiently using ship information to compensate for the Doppler Effect. This additional process will improve the system performances.
机译：调频（FM）信号的应用有望实现测深声纳性能的以下重要改进：（1）由于水中辐射的能量更多而获得的条带宽度增加;（2）脉冲长度与频谱频率通带之间的独立性;（3）多次ping操作的可能性;（4）匹配滤波带来的更好的抗干扰特性。尽管这些好处很有吸引力，但由于使用FM信号而产生了其他限制。应考虑的重要因素是船舶运动（横摇，俯仰和偏航），船舶速度，其轨迹和航向。所有这些因素都可能使性能变差，因此必须减轻它们对系统的影响。本文由两部分组成。在第一部分中，我们研究了声纳系统无法获得运动和运动信息时的FM参数选择。在这种情况下，可以简化FM信号的实现，但这种技术的好处将不会最大化。本文的第二部分致力于有效利用船舶信息来补偿多普勒效应的问题。此附加过程将提高系统性能。

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