发明名称 |
Acousto-optic channelizer-based ultra-wideband signal processor |
摘要 |
An ultra-wideband signal processor, such as that employed for processing narrow time domain radar return pulses, includes a coherent acousto-optic Bragg cell channelizer having a plurality of IF outputs from which a plurality of IF output signals respectively representative of energy content of respectively different frequency portions of the RF input signal are derived. A summing circuit is coupled to sum the IF output signals to produce a summation signal representative of their average energy content. This average energy signal is compared with a threshold to determine if the input signal is a valid RF signal. A delay circuit delays a selected one of the IF output channels by a time sufficient to accommodate summation of the channelizer outputs and determining whether a valid RF signal is present. A digital signal processor processes the delayed selected output signal in response to the summation signal exceeding the threshold.
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申请公布号 |
US5805317(A) |
申请公布日期 |
1998.09.08 |
申请号 |
US19970908452 |
申请日期 |
1997.08.07 |
申请人 |
HARRIS CORPORATION |
发明人 |
SNAWERDT, III, PETER F.;KOONTZ, MARK D.;MORSE, RANDALL K.;HOLLINGSWORTH, NORMAN C. |
分类号 |
G01S7/285;G01S7/288;G01S13/02;(IPC1-7):H04B10/06 |
主分类号 |
G01S7/285 |
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地址 |
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