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题名	高分辨率测深侧扫声纳参数修正和系统偏差校正方法研究
作者	高俊涛
学位类别	博士
答辩日期	2008-05-29
授予单位	中国科学院声学研究所
授予地点	声学研究所
关键词	高分辨率测深侧扫声纳 参数修正 系统偏差校正
其他题名	Research on parameter correction methods and system bias calibration methods for high-resolution bathymetric sidescan sonar
学位专业	信号与信息处理
中文摘要	高分辨率测深侧扫声纳(HRBSSS)是一种能够探测高分辨率海底地形和地貌的声学设备。它可以通过一定的信号处理方法直接得到海底回波的入射角和时延，然后利用各种传感器获得载体位置、载体姿态、声速剖面、潮汐等参数以及声纳阵与各种传感器在载体上的空间位置关系数据，对时延和入射角进行参数修正，并最终推导出被测水域的位置和稳态深度。 由于这些参数和声纳系统中的某些参数存在一定的系统偏差，所以在对一片海域的调查前，一般需要采用一定的方法获得这些偏差的修正量，对相应系统偏差进行校正，之后再进行上述参数修正工作，以获得更高的位置精度和测深精度。 本文主要针对高分辨率测深侧扫声纳的参数修正和系统偏差校正方法展开研究。 首先从高分辨率测深侧扫声纳的原理和特性出发，提出了高分辨率测深侧扫声纳参数修正流程，并参考多波束测深系统误差分析，对高分辨率测深侧扫声纳的误差源进行了分析，推导了各种参数误差到稳态深度和位置误差的传递公式。 其次在充分考虑高分辨率测深侧扫声纳特点的基础上，提出了横滚和入射角偏差综合校正方法和通过数据后处理进行运动传感器输出延时校正的方法。同时，为了降低各种系统偏差之间的互相影响，采用循环数据处理的方法，提出了高分辨率测深侧扫声纳系统偏差校正流程。 最后按照上述参数修正方法和系统偏差校正方法对高分辨率测深侧扫声纳东营海试数据进行了处理，测深结果达到了IHO特级标准。这表明应用本文的研究成果可以提高高分辨率测深侧扫声纳的测深精度和位置精度。
英文摘要	High-Resolution Bathymetric SideScan Sonar (HRBSSS) is a kind of acoustic equipment which can be applied on the high-resolution seabed terrain and physiognomy surveying. Some digital signal processing methods are used to get the incident angle and delay of seabed echo directly, and other parameters including position of vehicle, attitude of vehicle, sound speed profile and tide should be obtained by various sensors. Together with the data of spatial relation between sonar array and the sensors, the parameters are applied to modify the incident angle and delay, to derive the position and steady depth are finally derived. Because of the system biases of the parameters and sonar system, some methods are demanded to get the correction values to calibrate the system biases before survey. After that, the accuracy of position and depth derived by parameter modification will be higher. The dissertation mainly carries out research on methods of parameter modification and system bias calibration suitable for HRBSSS. First of all, according to the principles and characteristics of HRBSSS, the procedure of parameter modification of HRBSSS is proposed. With reference to error analysis of Multi-beam sounding sonar, the error sources of position and steady depth obtained by HRBSSS are analyzed, the formulas of error transmission are derived. Secondly, based on the features of HRBSSS, the integrated calibration method of system biases of roll and incident angle and the calibration method of output delay of motion sensor based on data post processing are derived. Meanwhile, in order to decrease the interaction between various system biases, the method of cycling data processing is applied, and the procedure of system bias calibration of HRBSSS is proposed. Finally, sea test data got by HRBSSS in Dongying sea area were processed in accordance with the methods of parameter modification and system bias calibration proposed in the dissertation. The results reached the special level of IHO S-44, which means the application of the research results of this dissertation will enhance the accuracy of the steady depth and position obtained by HRBSSS.
语种	中文
公开日期	2011-05-07
页码	70
内容类型	学位论文
源URL	[http://159.226.59.140/handle/311008/396]
专题	声学研究所_声学所博硕士学位论文_1981-2009博硕士学位论文
推荐引用方式 GB/T 7714	高俊涛. 高分辨率测深侧扫声纳参数修正和系统偏差校正方法研究[D]. 声学研究所. 中国科学院声学研究所. 2008.

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