| 发明名称 |
Background rejection circuit |
| 摘要 |
A background rejection circuit uses the harmonic content of an angularly narrow target to produce a signal. The signal is used to modulate an externally derived audio signal to produce a target indication signal free of background noise.
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| 申请公布号 |
US6580064(B1) |
申请公布日期 |
2003.06.17 |
| 申请号 |
US19800132466 |
申请日期 |
1980.03.25 |
| 申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
STENGER MARKAM F.;WOODSON ALAN D. |
| 分类号 |
G01S3/788;(IPC1-7):H01J40/14;F41G7/00;G01D5/36;G01J5/02 |
主分类号 |
G01S3/788 |
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