论文部分内容阅读
为提高混响限制下检测器的宽容性,采用理论分析和实验研究了一种基于随机时间扩展失真(TSD)对信道建模的方法.分析了基于该模型对信道建模来修正介质传播造成的影响,根据广义似然比检测(GLRT)准则推出的一种最优检测器——分段拷贝相关积分器(RCI).采用线性调频(LFM)发射信号通过仿真以及对实际数据的处理对分析结果进行了验证.研究结果表明:在混响限制条件下,采用TSD对信道建模,RCI检测器可以提高混响背景下主动声纳的检测性能.研究结论为水下失真信道中信号检测问题的解决提供一个有效途径.
In order to improve the tolerance of the detector under the limit of reverberation, a method of channel modeling based on random time-spread distortion (TSD) is studied theoretically and experimentally.The channel modeling based on this model is analyzed to correct the medium propagation Based on the generalized likelihood ratio detection (GLRT) criterion, an optimal detector - piecewise copy-correlation integrator (RCI) is introduced.The LFM signal is transmitted through simulation and the actual data is processed The results of which are validated.The results show that under the condition of reverberation limitation, TSD is used to model the channel, RCI detector can improve the detection performance of active sonar in the background of reverberation.The conclusion of the study is that signal detection in underwater distortion channel The solution to the problem provides an effective way.