文章摘要
赵俊杰,陈建青.一种尺度目标模拟器的多普勒模拟效果分析[J].声学技术,2017,36(2):128~132
一种尺度目标模拟器的多普勒模拟效果分析
Doppler simulation analysis of a scale target simulator
投稿时间:2016-05-23  修订日期:2016-07-25
DOI:10.16300/j.cnki.1000-3630.2017.02.006
中文关键词: 尺度目标模拟  多普勒频移  潜艇  鱼雷
英文关键词: scale target simulation  Doppler frequency shift  submarine  torpedo
基金项目:
作者单位E-mail
赵俊杰 昆明船舶设备研究试验中心, 云南昆明 650051 helloswrd@126.com 
陈建青 昆明船舶设备研究试验中心, 云南昆明 650051  
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中文摘要:
      在水声对抗中,尺度目标模拟器需要不断提高对潜艇声学特性的模拟逼真度,而多普勒频移是潜艇声学回波的主要参数之一,是鱼雷识别真假目标的重要依据。从潜艇的多普勒频移计算方法入手,通过仿真计算,分析了一种依靠自然航速形成多普勒效应的单收多发模拟器所产生信号与真实潜艇反射回波信号的多普勒频移差异。结果表明,差异主要由单收多发模拟器接收位置与发射位置不能一一对应造成。模拟器产生信号的多普勒频移较真实潜艇目标信号的多普勒频移小,特别是在与潜艇长度相当的近距离多普勒频移偏差显著增大。在目标模拟器设计中减小所述差异,可以提高对潜艇多普勒声学特性的模拟逼真度。
英文摘要:
      In underwater acoustic warfare, the scale target simulator need to be continuously improved in the simulation fidelity of submarine acoustic characteristics. Doppler frequency shift is one of the main parameters of submarine echo, which is an important basis for torpedo to identify true and false targets. Starting from the calculation method of Doppler frequency shift, through simulation, the Doppler frequency shift difference between the signal generated by the single receiving——multiple transmitting simulator, where the Doppler effect is due to the simulator's own speed, and the real submarine echo signal is analyzed. The results show that the differences are mainly caused by the fact that the receiving position of the single receiving——multiple transmitting simulator can not be one to one corresponding to the transmitting position. The Doppler frequency shift of the simulator is less than that of the real submarine; especially the deviation increases significantly for the Doppler frequency drift at the distance close to the length of the submarine. In the design of the scale target simulator, the simulation fidelity of the Doppler acoustic characteristic of submarine can be improved by reducing the difference.
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