共查询到17条相似文献,搜索用时 171 毫秒
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GeoSwath Plus系统利用相干原理能同时得到水深数据和声纳图,与传统侧扫声纳存在一定差异。本文对GeoSwath Plus 125 kHZ系统和Klein 3000系统从工作原理、技术参数、数据采集和后处理平台以及实测数据等方面进行了对比。结果表明:二者接收数据存在差异,导致两者的用途也存在差异;GeoSwath Plus系统相比Klein 3000更加复杂,但适用水深范围较小;GeoSwath Plus采集软件较少,对后处理软件的要求更高,而Klein 3000数据采集和后处理软件都有多种选择;通过实测数据的比较发现,GeoSwath Plus的定位精度更高,但由于发射波束水平开角大于Klein 3000,加之采用悬挂式安装,导致得到的声纳图像对比度和分辨率比传统侧扫声纳Klein 3000要差一些。 相似文献
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侧扫声纳系统及其在海洋环境监测和保护中的应用 总被引:3,自引:0,他引:3
总结了侧扫声纳系统在海洋环境监测和保护中的应用,介绍了侧扫声纳基本工作原理及其发展情况,并且对其以后的发展进行了简单探讨。 相似文献
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介绍了多波束测深系统和侧扫声纳系统的工作原理,通过实例说明了多波束测深系统和侧扫声纳系统在海底目标探测的工作流程,总结出两种探测系统在探测海底目标上的优缺点,说明了多种探测手段的综合应用是海底目标探测技术的发展方向。 相似文献
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本文提出了一种基于 TMS32 0 C31串行接口的双通道实时数据采集处理系统的设计与实现方案 ,该设计以 TMS32 0 C31和 TL C32 0 AD5 0 C为核心器件 ,具有两个独立的 A/D,D/A通道 ,能够实现 32位浮点计算和 16位数据采集与回放。应用该系统进行归一化最小均方误差 (Normal-ized L east Mean Square,NLMS)算法实时自适应噪声抵消实验 ,实验结果表明 ,该系统能够实现实时的自适应噪声抵消 ,可广泛应用于实时语音信号处理等领域。 相似文献
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随着数字三维城市建设的快速推进,传统的纹理获取方法已不能满足快速建模的要求。提出了一种基于航片纹理源的3D空间纹理映射方法,基于摄影测量学相关理论,通过设计算法,实现了建筑物侧面纹理的自动匹配。实验证明,这种方法简单、高效,适用于大面积建筑物3D建模。 相似文献
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Tine Missiaen 《Marine Geophysical Researches》2005,26(2-4):145-155
The design of very high resolution (VHR) 3D marine surveys not only depends on the theoretical considerations of seismic imaging,
but is also dictated by the field conditions and the available budget. The main geophysical controlling factors include the
depth and dip of the target, and horizontal and vertical resolution. Working in shallow water environments and at high frequencies
will imply constraints on sampling, array directivity and positioning accuracy. In this paper we describe the main requirements
and constraints involved in VHR 3D acquisition. The second part of the paper focuses on the flexible acquisition system “Opus3D”
recently developed for shallow water investigations. The system provides improvements in imaging resolution in a relatively
simple and cost-effective way. Acquisition and positioning constraints limit the system to nearshore studies. The experience
gained from various surveys with this new acquisition system allow us to formulate a number of practical specifications and
guidelines for 3D survey design in shallow water. 相似文献
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We describe software for an IBM compatible personal computer (PC) that we have developed and used to collect and analyze backscatter data from a multi-wavelength Mie-Rayleigh scanning lidar system. Both one and two-dimensional distributions of optical scattering coefficients are calculated from the lidar return signals and displayed in real time. Although we are using the software for analyzing marine aerosols, the modular nature of the software and data acquisition drivers make it straightforward to adapt the software to different systems, such as differential absorption lidar (DIAL) and oceanic lidars. We show examples of both horizontal and vertical Mie-Rayleigh lidar scans collected at the Makai Pier and Bellows Beach on the northeast side of the island of Oahu. 相似文献
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Park M.M. Singer R.C. Plueddemann A.J. Weller R.A. 《Oceanic Engineering, IEEE Journal of》1991,16(4):360-367
The authors describe an integrated hardware and software approach used to provide real-time acquisition and display of vector measuring current meter (VMCM) data at high sample rates (0.5 Hz) with supporting data from other instruments of somewhat slower rates. The hardware component consisted of a new circuit board for the VMCM that captured the VMCM data output, stored it, and transmitted it at high speed in response to a request from the data acquisition computer. The data acquisition software ran on a Masscomp 5600 computer under the UNIX operating system. A central control program provided timing information to several software processes that handled serial data acquisition, display, and storage for one or more instruments. Deployed as a part of the Surface Waves Processes Program (SWAPP) experiment, the integrated data acquisition system successfully collected, processed, stored, and displayed data from 19 VMCMs and four other instruments over a 22-day period in February and March of 1990 相似文献