公开(公告)号：US09197283B1

公开(公告)日：2015-11-24

申请号：US14576039

申请日：2014-12-18

申请人： RAYTHEON COMPANY

发明人： Tuan V. Nguyen ,  Oleg Brovko ,  Alison Kim ,  Jing Z. Stafsudd

IPC分类号： H04B1/00 ,  H04B1/707 ,  H04B1/16

CPC分类号： H03M1/121 ,  H03M1/04 ,  H03M1/128 ,  H04B1/16 ,  H04B1/70712

摘要： A method and apparatus for sampling a high bandwidth analog signal includes: splitting the high bandwidth analog signal into N parallel channels; randomly demodulating each of the signals; sampling each demodulated signal using a sub-Nyquist sampling rate; combining each sampled signal into a sub-Nyquist signal; compressive sensing the combined sub-Nyquist signal to estimate missing samples of a full Nyquist rate uniform sample set X(n); convolving X(n) with N analysis filters, each analysis filter having a different coefficient; decimating output of each analysis filter using decimation ratios of M:1 to generate a sub-banded signal set Yi (n), i=1, . . . , N; processing the sub-banded signal set; up-sampling each processed sub-band signal by M; convolving each up-sampled sub-band signal with a corresponding synthesis filter; and combining two or more of the convolved signals to generate a non-uniform spectral partitioning of the high bandwidth analog signal.

摘要翻译： 一种用于对高带宽模拟信号进行采样的方法和装置包括：将高带宽模拟信号分成N个并行信道; 随机解调每个信号; 使用子奈奎斯特采样率对每个解调信号进行采样; 将每个采样信号组合成次奈奎斯特信号; 压缩感测组合的次奈奎斯特信号以估计全奈奎斯特速率均匀样本集X（n）的丢失样本; 用N个分析滤波器卷积X（n），每个分析滤波器具有不同的系数; 使用M：1的抽取比例抽取每个分析滤波器的输出，以产生子带式信号集合Yi（n），i = 1。 。 。 ，N; 处理子带信号集; 将每个处理的子带信号上采样M; 将每个上采样子带信号与对应的合成滤波器进行卷积; 并组合两个或更多个卷积信号以产生高带宽模拟信号的不均匀频谱划分。