两种脉冲信号包络提取方法的联系及性能分析

平方率包络检波与基于希尔伯特变换的包络检波是工程应用中2种典型的脉冲信号包络提取方法.在对二者检波模型简要概述的基础上,指出了基于希尔伯特变换的检波方法是平方率检波方法在射频带宽与视频带宽相等条件下的特例.在对提升平方率检波器性能进行讨论的基础上,给出了雷达侦察接收机灵敏度的新计算方法,着重反映了不同的信号带宽对灵敏度...

Relationship and Capability Analysis on Two Pulse Signal Envelope Extraction Methods

The square rate envelope detection and envelope extraction based on Hilbert transformation are two typical methods for the pulse signal envelope extraction in engineering application.After a brief overview of their detection models,it is pointed out that the method based on Hilbert transformation is a special case of the square rate detection method under the condition that the radio bandwidth is equal to the video bandwidth.After the approach to improve the performance of the square rate detector is discussed,the new method for sensitivity calculation of radar reconnaissance receiver is proposed,which reflects the important influence of different signal bandwidth on sensitivity evaluation.The sensitivity of radar reconnaissance receiver is different under the various signal bandwidth.Finally,the theoretical analysis is verified by simulations.It provides the new reference and guidance for the scheme demonstration,system design and specification analysis of the radar reconnaissance digital receiver.