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1. 发明授权

EP0362984B1 Signal discrimination system 失效
标题翻译：系统信号的歧视。
公开(公告)号：EP0362984B1
公开(公告)日：1995-01-18
申请号：EP89304507.0
申请日：1989-05-04
申请人： AMTECH SYSTEMS CORPORATION
发明人： Landt, Jeremy A. , Koelle, Alfred R. , Eckhardt, David A.
IPC分类号： G01S13/82
CPC分类号： G01S13/82

2. 发明公开

EP0362984A3 Signal discrimination system 失效
标题翻译：信号辨识系统
公开(公告)号：EP0362984A3
公开(公告)日：1991-05-08
申请号：EP89304507.0
申请日：1989-05-04
申请人： AMTECH SYSTEMS CORPORATION
发明人： Landt, Jeremy A. , Koelle, Alfred R. , Eckhardt, David A.
IPC分类号： G01S13/82
CPC分类号： G01S13/82
摘要： The invention provides a system for discriminating between modulated backscattered signals based upon transmission-to-reception time delay. The system employs a carrier, phase-modulated with a modulating signal, having characteristics which provide unity output when correlated with itself with zero time shift and a substantially lower output level when correlated with itself with a significant time shift. The system works with a backscatter-modulator located a finite distance from the transmitter for receiving and modulating the backscatter of the carrier. A receiver/detector receives and detects the modulated backscattered phase-modulated signal, the detector being phase-sensitive and having as a reference signal the transmitted phase-modulating carrier signal, and having as an input signal the phase modulated backscattered carrier. The detector provides an output signal whose averaged amplitude is substantially dependent upon the degree of phase correlation between the phase of the modulation returned input signal and the reference signal. Finally, the output signal from the detector is selectively processed only when its averaged amplitude is above a threshold level. In a preferred embodiment the transmitted signal is a spread spectrum signal.

3. 发明公开

EP0382969A3 Range limiting system 失效转让
标题翻译：范围限制系统
公开(公告)号：EP0382969A3
公开(公告)日：1991-05-02
申请号：EP89310751.6
申请日：1989-10-19
申请人： AMTECH SYSTEMS CORPORATION
发明人： Landt, Jeremy A. , Koelle, Alfred R. , Eckhardt, David A.
IPC分类号： G01S13/82
CPC分类号： G01S13/82
摘要： A range limiting system for differentiating desired received signals having an amplitude above a predetermined threshold level and at least one other recognizable predetermined characteristic, from other received signals below said predetermined threshold amplitude, comprising:
means for combining said received signal of unknown amplitude, which may be above or below said predetermined threshold amplitude, with a known signal of said predetermined amplitude having at least one other predetermined characteristic which is distinguishable from said other recognizable characteristic of said received signal; and
signal processing means having the combined signal as its input and which produces an output signal whose other recognizable characteristic is determined by said received signal only when said received signal is above said predetermined threshold amplitude, and by said known signal when said received signal is below said predetermined threshold amplitude, whereby the presence or absence of said desired received signal may be determined on the basis of analysis of said other predetermined characteristic of said output signal of said signal processing means.

4. 发明公开

EP0362984A2 Signal discrimination system 失效
标题翻译：系统zur Discrimination von Signalen。
公开(公告)号：EP0362984A2
公开(公告)日：1990-04-11
申请号：EP89304507.0
申请日：1989-05-04
申请人： AMTECH SYSTEMS CORPORATION
发明人： Landt, Jeremy A. , Koelle, Alfred R. , Eckhardt, David A.
IPC分类号： G01S13/82
CPC分类号： G01S13/82
摘要： The invention provides a system for discriminating between modulated backscattered signals based upon transmission-to-reception time delay. The system employs a carrier, phase-modulated with a modulating signal, having characteristics which provide unity output when correlated with itself with zero time shift and a substantially lower output level when correlated with itself with a significant time shift. The system works with a backscatter-modulator located a finite distance from the transmitter for receiving and modulating the backscatter of the carrier. A receiver/detector receives and detects the modulated backscattered phase-modulated signal, the detector being phase-sensitive and having as a reference signal the transmitted phase-modulating carrier signal, and having as an input signal the phase modulated backscattered carrier. The detector provides an output signal whose averaged amplitude is substantially dependent upon the degree of phase correlation between the phase of the modulation returned input signal and the reference signal. Finally, the output signal from the detector is selectively processed only when its averaged amplitude is above a threshold level. In a preferred embodiment the transmitted signal is a spread spectrum signal.
摘要翻译：本发明提供一种用于基于发送到接收时间延迟来区分调制后向散射信号的系统。该系统采用具有调制信号相位调制的载波，具有当与自身相关的零时间偏移时提供单位输出的特性，以及当与自身以显着的时间偏移相关时，其显着降低的输出电平。该系统与位于离发射机有限距离的后向散射调制器一起工作，用于接收和调制载波的后向散射。接收器/检测器接收并检测调制的反向散射相位调制信号，检测器是相敏的，并且具有作为参考信号的传输的相位调制载波信号，并且具有作为相位调制后向散射载波的输入信号。检测器提供输出信号，其平均幅度基本上取决于调制返回的输入信号的相位与参考信号之间的相位相关程度。最后，只有当其平均幅度高于阈值电平时，来自检测器的输出信号才被选择性地处理。在优选实施例中，发射信号是扩频信号。

5. 发明授权

EP0382969B1 Range limiting system 失效转让
标题翻译：范围限制系统
公开(公告)号：EP0382969B1
公开(公告)日：1996-01-10
申请号：EP89310751.6
申请日：1989-10-19
申请人： AMTECH SYSTEMS CORPORATION
发明人： Landt, Jeremy A. , Koelle, Alfred R. , Eckhardt, David A.
IPC分类号： G01S13/82
CPC分类号： G01S13/82

6. 发明公开

EP0382969A2 Range limiting system 失效转让
标题翻译：范围限制系统
公开(公告)号：EP0382969A2
公开(公告)日：1990-08-22
申请号：EP89310751.6
申请日：1989-10-19
申请人： AMTECH SYSTEMS CORPORATION
发明人： Landt, Jeremy A. , Koelle, Alfred R. , Eckhardt, David A.
IPC分类号： G01S13/82
CPC分类号： G01S13/82
摘要： A range limiting system for differentiating desired received signals having an amplitude above a predetermined threshold level and at least one other recognizable predetermined characteristic, from other received signals below said predetermined threshold amplitude, comprising:
means for combining said received signal of unknown amplitude, which may be above or below said predetermined threshold amplitude, with a known signal of said predetermined amplitude having at least one other predetermined characteristic which is distinguishable from said other recognizable characteristic of said received signal; and
signal processing means having the combined signal as its input and which produces an output signal whose other recognizable characteristic is determined by said received signal only when said received signal is above said predetermined threshold amplitude, and by said known signal when said received signal is below said predetermined threshold amplitude, whereby the presence or absence of said desired received signal may be determined on the basis of analysis of said other predetermined characteristic of said output signal of said signal processing means.
摘要翻译：一种用于区分具有高于预定阈值电平的幅度的期望接收信号和至少一个其它可识别的预定特性与低于所述预定阈值幅度的其它接收信号的范围限制系统，包括：用于组合所述未知幅度的接收信号的装置，高于或低于所述预定阈值幅度，所述预定幅度的已知信号具有至少一个与所述接收信号的所述其他可识别特性可区分的至少一个其他预定特性; 以及信号处理装置，其组合信号作为其输入并产生一个输出信号，该输出信号的其它可识别特性只有当所述接收信号高于所述预定阈值幅度时由所述接收信号确定，而当所述接收信号低于所述已知信号时所述预定阈值幅度，由此可以基于对所述信号处理装置的所述输出信号的所述另一预定特性的分析来确定所述期望接收信号的存在或不存在。

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