In this paper, on the basis of deeply analyzing the spectrum feature of the target noise, a large quantity data of two sorts of target noise are simulated under the condition of different frequency, departure, depth and SNR.
本文还在深入分析了目标声场谱特征的基础上，分别建立了两类目标在不同频段、不同横距、不同深度及不同信噪比下的大量仿真数据。
参考来源 - 灰建模理论及其在目标识别中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
The spectrum feature of water in dalian Bay is also analyzed.
第六章介绍数据采集与处理，分析了大连湾水体光谱特征。
Conclusion Accurate differential diagnosis could be made with analysis for frequency spectrum feature with color Dopp...
结论通过对浅表肿大淋巴结的超声表现综合分析，可以做出较准确的鉴别诊断。
Spectrum feature analysis of the transducer apparatus is also conducted with this approach and thus achieves the best testing status.
利用超声频谱分析法对换能器进行频率特性分析，找出适合检测的最佳状态。
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