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首先利用希尔波特变换解调出信号包络，进而计算出解调谱；
By means of Hilbert transform, the author obtains the signal envelope, and then calculates the demodulation spectrum.
研究了在信号包络存在细微差异前提下，基于信号抽取与最大似然准则的特定辐射源识别算法。
Aimed at the existing of minor differences of the signal envelopes, a specific radar emitter recognition algorithm is proposed based on the signal decimation and the maximum-likelihood criteria.
基于参数联合估计的多目标定位方法在不同目标数目、不同信号包络的定位实验中都有较好的表现。
The method based on joint parameter estimation shows preferable performance almost at all times, in cases of various number of targets and various type of signal envelope.
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