发明名称 |
SIGNAL PROCESSING DEVICE |
摘要 |
A signal processing device (2) includes an amplifier (3), an A/D converter (4) and a signal processor (5). The amplifier (3) amplifies a sensor signal that is supplied from a radio wave sensor (1) and depends on a motion of an object. The A/D converter (4) converts the sensor signal amplified by the amplifier (3) into a digital sensor signal. The signal processor (5) converts the sensor signal output from the A/D converter (4) into a frequency-domain sensor signal by Discrete Cosine Transform processing, estimates a background signal contained in the frequency-domain sensor signal, based on an error signal obtained from the sensor signal and a reference signal which is white noise, and determines a filter coefficient according to the estimated background signal, thereby operating as an adaptive filter for removing the background signal from the sensor signal in the frequency domain. |
申请公布号 |
US2016195606(A1) |
申请公布日期 |
2016.07.07 |
申请号 |
US201314653458 |
申请日期 |
2013.12.03 |
申请人 |
Panasonic Intellectual Property Management Co.,Ltd. |
发明人 |
SUGINO Satoshi |
分类号 |
G01S7/02;G01S13/56 |
主分类号 |
G01S7/02 |
代理机构 |
|
代理人 |
|
主权项 |
1. A signal processing device comprising:
an amplifier configured to amplify a sensor signal supplied from a sensor that is configured to receive a wireless signal reflected by an object; an A/D converter configured to convert the sensor signal amplified by the amplifier into a digital sensor signal and to output the digital signal; and a signal processor configured
to convert the sensor signal output from the ND converter into a frequency-domain sensor signal by Discrete Cosine Transform processing,to estimate a background signal contained in the frequency-domain sensor signal, based on an error signal obtained from the sensor signal and a reference signal which is white noise, andto determine a filter coefficient according to the estimated background signal,thereby operating as an adaptive filter for removing the background signal from the sensor signal in the frequency domain. |
地址 |
Osaka JP |