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1. 发明申请

WO1989000279A2 ANALOG-DIGITAL CORRELATOR 审中-公开
标题翻译：模拟数字相关器
公开(公告)号：WO1989000279A2
公开(公告)日：1989-01-12
申请号：PCT/US1988002159
申请日：1988-06-22
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , BURNS, Richard, J. , GRIM, Kenneth, R. , LEVY, Miguel, E.
IPC分类号： G01J01/00
CPC分类号： G01S13/288 , G06J1/005
摘要： An analog-digital correlator (10) utilizes a plurality of sample and hold circuits (16-0 to 16-(M-1)) to directly store samples of a received analog signal. Bits of a correlation pattern are shifted through stages in a correlation pattern shift register (26). The state of the correlation pattern bits causes the value in the associated sample and hold circuit (16) to either be inverted or noninverted when it is summed with other similarly generated signals from the remaining sample and hold circuits to form the correlation output sum by network (30). The output of network (30) will peak when the bits of the digital correlation pattern signal are shifted to stages in register (26) that are aligned with the sample and hold circuits containing the digitally-impressed code of interest. In the preferred embodiment, a mask shift register (28) is used to selectively disable certain of the sample and hold circuits from affecting the correlation output sum. To this end, mask bits corresponding to the length of the digitally-impressed code are shifted through mask register (28) simultaneously with the correlation pattern bits in register (26).

2. 发明授权

EP0322454B1 ANALOG-DIGITAL CORRELATOR 失效
标题翻译：模拟数字相关器
公开(公告)号：EP0322454B1
公开(公告)日：1991-02-27
申请号：EP88907499.3
申请日：1988-06-22
申请人： Hughes Aircraft Company
发明人： BURNS, Richard, J. , GRIM, Kenneth, R. , LEVY, Miguel, E.
IPC分类号： G06J1/00 , G01S13/28
CPC分类号： G01S13/288 , G06J1/005
摘要： An analog-digital correlator (10) utilizes a plurality of sample and hold circuits (16-0 to 16-(M-1)) to directly store samples of a received analog signal. Bits of a correlation pattern are shifted through stages in a correlation pattern shift register (26). The state of the correlation pattern bits causes the value in the associated sample and hold circuit (16) to either be inverted or noninverted when it is summed with other similarly generated signals from the remaining sample and hold circuits to form the correlation output sum by network (30). The output of network (30) will peak when the bits of the digital correlation pattern signal are shifted to stages in register (26) that are aligned with the sample and hold circuits containing the digitally-impressed code of interest. In the preferred embodiment, a mask shift register (28) is used to selectively disable certain of the sample and hold circuits from affecting the correlation output sum. To this end, mask bits corresponding to the length of the digitally-impressed code are shifted through mask register (28) simultaneously with the correlation pattern bits in register (26).

3. 发明公开

EP0322454A1 ANALOG-DIGITAL CORRELATOR 失效
标题翻译：模拟数字相关。
公开(公告)号：EP0322454A1
公开(公告)日：1989-07-05
申请号：EP88907499.0
申请日：1988-06-22
申请人： HUGHES AIRCRAFT COMPANY
发明人： BURNS, Richard, J. , GRIM, Kenneth, R. , LEVY, Miguel, E.
IPC分类号： G01J1 , G01S7 , G01S13 , G06J1
CPC分类号： G01S13/288 , G06J1/005
摘要： An analog-digital correlator (10) utilizes a plurality of sample and hold circuits (16-0 to 16-(M- 1)) to directly store samples of a received analog signal. Bits of a correlation pattern are shifted through stages in a correlation pattern shift register (26). The state of the correlation pattern bits causes the value in the asso ciated sample and hold cir cuit (16) to either be invert ed or noninverted when it is summed with other similar ly generated signals from the remaining sample and hold circuits to form the correlation output sum by network (30). The output of network (30) will peak when the bits of the digital correlation pattern signal are shifted to stages in register (26) that are aligned with the sample and hold circuits containing the digitally-impressed code of interest. In the preferred embodiment, a mask shift register (28) is used to selectively dis able certain of the sample and hold circuits from affecting the correlation output sum. To this end, mask bits correspond ing to the length of the digitally-impressed code are shifted through mask register (28) simultaneously with the correlation pattern bits in register (26).

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