公开(公告)号：US20230140050A1

公开(公告)日：2023-05-04

申请号：US17513153

申请日：2021-10-28

申请人： University Corporation for Atmospheric Research

发明人： John Clark Hubbert

IPC分类号： H04L27/148

摘要： A band filter (100, 200) for filtering a discrete time series signal (110) is provided. The band filter (100, 200) includes an input frequency shifter (120, 220) configured to frequency down shift the discrete time series signal (110, 210) to provide a frequency down shifted discrete time series signal (120a, 220a), a regression based zero frequency centered band filter (130, 230) communicatively coupled to the input frequency shifter (120, 220), the regression based zero frequency centered band filter (130, 230) being configured to filter the frequency down shifted discrete time series signal (120a, 220a) to provide a filtered and frequency down shifted discrete time series signal (130a, 230a), and an output frequency shifter (140, 240) communicatively coupled to the regression based zero frequency centered band filter (130, 230), the output frequency shifter (140, 240) being configured to frequency up shift the filtered and frequency down shifted discrete time series signal (130a, 230a).

公开(公告)号：US11300653B2

公开(公告)日：2022-04-12

申请号：US16508858

申请日：2019-07-11

申请人： University Corporation for Atmospheric Research

发明人： John Clark Hubbert

IPC分类号： G01S7/288 ,  G01S7/292

摘要： A method and system for removing ground clutter data from time series radar data are provided. The method comprises receiving the time series radar data, applying a clutter filter to the time series radar data to generate a filtered time series radar data, applying a discrete Fourier transform to the filtered time series radar data to generate a filtered frequency domain data, determining a filter bias for one or more filter biased frequency domain frequencies of the filtered frequency domain data based on a frequency response of the clutter filter, and correcting the filtered frequency domain data by adding the filter bias to the filtered frequency domain data at the one or more filter biased frequency domain frequencies to generate a filtered and bias corrected frequency domain data.

公开(公告)号：US11888660B2

公开(公告)日：2024-01-30

申请号：US17513153

申请日：2021-10-28

申请人： University Corporation for Atmospheric Research

发明人： John Clark Hubbert

IPC分类号： H04L27/148

CPC分类号： H04L27/148

摘要： A band filter (100, 200) for filtering a discrete time series signal (110) is provided. The band filter (100, 200) includes an input frequency shifter (120, 220) configured to frequency down shift the discrete time series signal (110, 210) to provide a frequency down shifted discrete time series signal (120a, 220a), a regression based zero frequency centered band filter (130, 230) communicatively coupled to the input frequency shifter (120, 220), the regression based zero frequency centered band filter (130. 230) being configured to filter the frequency down shifted discrete time series signal (120a, 220a) to provide a filtered and frequency down shifted discrete time series signal (130a, 230a), and an output frequency shifter (140, 240) communicatively coupled to the regression based zero frequency centered band filter (130, 230), the output frequency shifter (140, 240) being configured to frequency up shift the filtered and frequency down shifted discrete time series signal (130a, 230a).

公开(公告)号：US10914828B2

公开(公告)日：2021-02-09

申请号：US16227239

申请日：2018-12-20

申请人： University Corporation for Atmospheric Research

发明人： John Clark Hubbert

IPC分类号： G01S13/20 ,  G06F17/18 ,  G01S7/28

摘要： A method and system for removing ground clutter data from time series data are provided. The method comprises receiving first time series data, dividing the first time series data into a plurality of subsets of first time series data, applying a first regression filter to each respective subset first time series data of the plurality of subsets of first time series data to generate a plurality of regression filtered subsets of first time series data, and concatenating the plurality of regression filtered subsets of first time series data to generate a regression filtered first time series data.