公开(公告)号：EP3180861B1

公开(公告)日：2019-05-29

申请号：EP15741627.2

申请日：2015-06-11

申请人： Raytheon Company

发明人： FLANDERS, Bradley ,  ROBINSON, Ian S.

IPC分类号： H03M1/12 ,  G01R23/16

公开(公告)号：EP3105559A1

公开(公告)日：2016-12-21

申请号：EP15719114.9

申请日：2015-04-16

申请人： Raytheon Company

发明人： ROBINSON, Ian S. ,  BLOOMER, John D. ,  FLANDERS, Bradley

IPC分类号： G01J3/45 ,  G01J3/453

CPC分类号： G01J3/4535 ,  G01J3/0202 ,  G01J3/06 ,  G01J3/45 ,  G01J2003/4538

摘要： Interferometric transform spectrometer (ITS) systems and methods of operation thereof. In one example, an ITS system includes a Michelson interferometer that introduces a varying optical path length difference (OPD) between its two arms so as to produce an interferogram, a detector that receives and samples the interferogram, and a scan controller coupled to the detector and to Michelson interferometer. The scan controller controls the Michelson interferometer to vary the OPD in discrete steps such that the detector provides M samples of the interferogram for each of two scan segments. In the first scan segment, the M samples have a uniform or non-uniform sample spacing and the OPD has a first maximum value. In the second scan segment, the M samples have an incrementally increasing sample spacing and the OPD has a second maximum value that is at least twice the first maximum value.

公开(公告)号：EP3180861A1

公开(公告)日：2017-06-21

申请号：EP15741627.2

申请日：2015-06-11

申请人： Raytheon Company

发明人： FLANDERS, Bradley ,  ROBINSON, Ian S.

IPC分类号： H03M1/12 ,  G01R23/16

CPC分类号： H03M1/128 ,  G01R23/16 ,  H03M1/1265 ,  H04B1/16

摘要： A method includes generating a sampling signal having a non-uniform sampling interval and sampling a received signal with an analog-to-digital converter (ADC) using the sampling signal. The method also includes mapping the sampled received signal onto a frequency grid of sinusoids, where each sinusoid has a signal amplitude and a signal phase. The method further includes estimating the signal amplitude and the signal phase for each sinusoid in the frequency grid. In addition, the method includes computing an average background power level and detecting signals with power higher than the average background power level. The non-uniform sampling interval varies predictably.

摘要翻译： 一种方法包括：生成具有非均匀采样间隔的采样信号;以及使用采样信号，利用模数转换器（ADC）对接收到的信号进行采样。 该方法还包括将采样的接收信号映射到正弦曲线的频率网格上，其中每个正弦曲线具有信号幅度和信号相位。 该方法还包括估计频率网格中每个正弦曲线的信号幅度和信号相位。 另外，该方法包括计算平均背景功率电平并检测功率高于平均背景功率电平的信号。 非均匀采样间隔可预测地变化。