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公开(公告)号：US06366627B1
公开(公告)日：2002-04-02
申请号：US06536592
申请日：1983-09-28
IPC分类号： H04B169
CPC分类号： H04B1/1638 , H04B1/62
摘要： A compressive receiver including a dispersive delay line (10) and a frequency translator (16, 18) is preceded by signal compressors (22a-d) that record the incoming signals at one speed and play them back at a higher speed. This increases the frequency spread and provides greater frequency resolution at the output of the receiver.
摘要翻译： 包括色散延迟线（10）和频率转换器（16,18）的压缩接收器的前面是信号压缩器（22a-d），其以一个速度记录输入信号并以更高的速度播放它们。 这增加了频率扩展，并在接收机的输出端提供了更高的频率分辨率。
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公开(公告)号：US4633257A
公开(公告)日：1986-12-30
申请号：US551664
申请日：1983-11-14
CPC分类号： G01S3/16
摘要： A system for indicating the direction of a source of radio waves received by a circular antenna array (12) includes a Butler matrix (18) that receives the array outputs and feeds the resultant matrix outputs to correction circuits (22) whose transfer functions are the inverses of the direction-independent factors of antenna patterns generated by antenna elements driven at relative phases that advance around the array at rates that complete an integral number of cycles in one circuit of the array. The resultant corrected signals are fed to a compressive receiver (26), which accordingly generates an output on an output port whose position indicates the direction of the source of the signal.
摘要翻译： 用于指示由圆形天线阵列（12）接收的无线电波源的方向的系统包括接收阵列输出并将所得到的矩阵输出馈送到校正电路（22）的巴特勒矩阵（18），校正电路（22）的传递函数为 由在阵列的一个电路中完成整数个周期的速率的相对相位驱动的天线元件产生的天线方向的方向独立因子的反转。 所得到的校正信号被馈送到压缩接收器（26），其相应地在其位置指示信号源的方向的输出端口上产生输出。
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公开(公告)号：US4688003A
公开(公告)日：1987-08-18
申请号：US914897
申请日：1986-10-03
CPC分类号： H03L7/081
摘要： A signal source in the general form of a phase-locked loop (12, 20, 22, and 24) has its output fed to a phase modulator (32) controlled in response to the output of the phase-locked-loop phase detector (20). This provides feed-forward error correction that gives the signal source a faster response than a conventional phase-locked-loop arrangement would have.
摘要翻译： 锁相环（12,20,22和24）的一般形式的信号源的输出被馈送到相位调制器（32），该相位调制器响应于锁相环相位检测器的输出 20）。 这提供了前馈纠错，使得信号源比常规的锁相环装置具有更快的响应。
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公开(公告)号：US4604626A
公开(公告)日：1986-08-05
申请号：US553608
申请日：1983-11-21
CPC分类号： G01S3/38
摘要： A phase-angle circuit (24) processes the outputs of an antenna array (12) to apply to a compressive receiver (20) an ensemble of signals having components whose spatial frequencies are proportional to the bearing angle of the electromagnetic plane waves that give rise to them. A signal whose phase angle is equal to twice the bearing angle is generated by interconnecting the antenna elements as two quadrupoles offset by 45.degree.. The output of one of the quadrupoles is shifted in phase by 90.degree. and added to the output of the other quadrupole to generate the desired signal, which is applied as an input to the compressive receiver. Other inputs to the compressive receiver are generated in similar ways. The position of the compressive-receiver output port (22) at which a maximum occurs indicates the bearing angle of the electromagnetic plane wave that gave rise to the maximum.
摘要翻译： 相位角电路（24）处理天线阵列（12）的输出以向压缩接收机（20）应用具有空间频率与产生的电磁平面波的方位角成正比的分量的信号的整体 给他们。 相位角等于轴承角的两倍的信号通过将天线元件互连为两个四极偏移45°而产生。 四极之一的输出相位移90°，并加到另一四极的输出端，以产生所需信号，该信号作为输入施加到压缩接收器。 以类似的方式生成压缩接收器的其他输入。 出现最大值的压缩接收器输出端口（22）的位置表示产生最大值的电磁平面波的方位角。
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公开(公告)号：US5343207A
公开(公告)日：1994-08-30
申请号：US913436
申请日：1986-09-30
IPC分类号： G01S7/02 , H04B1/12 , G01S7/40 , G01R23/175
摘要： The input ports (18) of an imaging compressive receiver (20) receive from a tapped delay line (16) progressively delayed versions of a received signal s(t). Because of the delays, a signal component in the received signal appears at least at one of the input ports (18) of the compressive receiver (20) at a time when the compressive receiver (20) will detect it, even if the undelayed version occurs during a time at which the compressive receiver (20) would ordinarily be insensitive to it. Since the compressive receiver (20) is an imaging device, it provides relatively isolated channels between its input terminals (18) and its output terminals (38). The phase relationships between the delays in these channels remain constant despite changes in environmental factors, however, because the various channels are embodied in a common two-dimensional delay line.
摘要翻译： 成像压缩接收器（20）的输入端口（18）从抽头延迟线（16）接收逐渐延迟的接收信号s（t）的版本。 由于延迟，接收信号中的信号分量至少在压缩接收器（20）的输入端口（18）中的一个出现时，即使压缩接收器（20）将检测到该信号分量，即使未延迟版本 在压缩接收器（20）通常对其不敏感的时间期间发生。 由于压缩接收器（20）是成像装置，所以它在其输入端子（18）和其输出端子（38）之间提供相对隔离的通道。 尽管环境因素发生变化，但这些信道的延迟之间的相位关系保持不变，但是由于各种信道被体现在通用的二维延迟线中。
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公开(公告)号：US4808950A
公开(公告)日：1989-02-28
申请号：US916072
申请日：1986-10-06
IPC分类号： H01P9/00
CPC分类号： H01P9/00
摘要： An electromagnetic dispersive delay line (10) includes a dielectric strip (28) as well as a coupler (24, 34, 36, and 38) for launching surface electromagnetic waves into the dielectric strip. The upper surface of the dielectric strip (28) is left exposed to the air in order to provide an interface with a lower-permittivity medium of propagation. This permits a surface-electromagnetic-wave propagation mode. The thickness of the dielectric strip (28) is varied along its length so as to result in a linear relationship of delay to frequency throughout a predetermined frequency range. Preferably, a conductive strip (26) spaced from the dielectric strip extends along the surface-wave propagation path in the region occupied by the evanescent field external to the dielectric strip (28). This conductive strip (26) modifies the phase relationships between the electric and magnetic fields in the evanescent-field region so as to cause some of the power transmission to occur outside of the dielectric strip. This modifies the dispersion curve so as to extend the bandwidth of significant dispersion.
摘要翻译： 电磁色散延迟线（10）包括介质条（28）以及用于将表面电磁波发射到介质条中的耦合器（24,34,36和38）。 介质条（28）的上表面暴露于空气中，以提供与介电常数较低的介质的界面。 这允许表面电磁波传播模式。 介质条（28）的厚度沿其长度变化，以便在整个预定频率范围内导致延迟与频率的线性关系。 优选地，与电介质条隔开的导电条（26）沿着由介电条（28）外部的消逝场所占据的区域中的表面波传播路径延伸。 该导电条（26）修改了消逝场区域中的电场和磁场之间的相位关系，从而使一些电力传输发生在介质条的外部。 这样可以改变色散曲线，以扩大色散带宽。
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公开(公告)号：US4296389A
公开(公告)日：1981-10-20
申请号：US39229
申请日：1979-05-14
CPC分类号： H01P9/003 , Y10T29/49016
摘要： A dispersive delay line and method for fabricating the delay line is described in which coaxial cable is utilized and in which the dispersive or bandpass characteristic is established by the crimping of the coaxial cable in such a manner that the axial crimp length is small compared to the wavelength, thereby providing a discontinuity which behaves like a simple shunt capacity. A simple fabrication technique is utilized in which the crimps are applied to the line at selected points by use of a four-tooth crimping tool.
摘要翻译： 描述了用于制造延迟线的分散延迟线和方法，其中使用同轴电缆，并且其中通过同轴电缆的压接来建立分散或带通特性，使得轴向卷曲长度与 波长，从而提供不连续性，其行为类似于简单的分流容量。 使用简单的制造技术，其中通过使用四齿压接工具将卷曲施加到选定点处的线。
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公开(公告)号：US5029235A
公开(公告)日：1991-07-02
申请号：US286188
申请日：1988-12-19
IPC分类号： H01P9/00
CPC分类号： H01P9/00
摘要： An electromagnetic dispersive delay line (10) includes a dielectric strip (28) as well as a coupler (24, 34, 36, and 38) for launching surface electromagnetic waves into the dielectric strip. The upper surface of the dielectric strip (28) is left exposed to the air in order to provide an interface with a lower-permittivity medium of propagation. This permits a surface-electromagnetic-wave propagation mode. The thickness of the dielectric strip (28) is varied along its length so as to result in a linear relationship of delay to frequency throughout a predetermined frequency range. Preferably, a conductive strip (26) spaced from the dielectric strip extends along the surface-wave propagation path in the region occupied by the evanescent field external to the dielectric strip (28). This conductive strip (26) modifies the phase relationships between the electric and magnetic fields in the evanescent-field region so as to cause some of the power transmission to occur outside of the dielectric strip. This modifies the dispersion curve so as to extend the bandwidth of significant dispersion.
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公开(公告)号：US4733237A
公开(公告)日：1988-03-22
申请号：US689524
申请日：1985-01-07
摘要： A device for determining the frequency range and chirp rate of chirp radars or other sources of frequency-modulated signals includes a compressive receiver (16, 22, 24) for time-compressing single-frequency signals and a discriminator (26) for generating an output that represents the instantaneous frequency of the compressive-receiver output. For narrow-band signals, the frequency-modulated components in the output of the compressive receiver do not last long enough to cause a response from the discriminator (26). When the input of the compressive receiver is a chirp signal, on the other hand, the resultant compressive-receiver output lasts long enough to cause a discriminator response, and its time of occurrence and rate of frequency change are indications of the frequency range and chirp rate of the compressive-receiver input. The discriminator (26) accordingly generates an output whose slope is an indication of the chirp rate of the compressive-receiver input.
摘要翻译： 用于确定啁啾雷达或其他频率调制信号源的频率范围和啁啾率的装置包括用于时间压缩单频信号的压缩接收机（16,22,24）和用于产生输出的鉴频器（26） 表示压缩接收机输出的瞬时频率。 对于窄带信号，压缩接收机的输出中的调频分量不会持续足够长的时间来引起鉴别器（26）的响应。 另一方面，当压缩接收机的输入是线性调频信号时，所得到的压缩接收机输出持续足够长的时间以产生鉴别器响应，并且其发生时间和频率变化率是频率范围和啁啾指示 压缩接收机输入的速率。 鉴别器（26）相应地产生其斜率是压缩接收器输入的啁啾率的指示的输出。
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公开(公告)号：US4656642A
公开(公告)日：1987-04-07
申请号：US601453
申请日：1984-04-18
CPC分类号： H04B1/69 , H04L27/103
摘要： In a spread-spectrum direction-finding system, the outputs of the several antenna elements (10a-d) are progressively translated in frequency by a chirped local oscillator (14) and mixers (12a-d) and applied to a two-dimensional dispersive filter (18), which time compresses the results of single-frequency components in the antenna-element outputs to narrow pulses. Limiters (24a-d) remove any strong narrow-band components that are compressed by the dispersive delay line (18) so that further processing to detect a spread-spectrum signal is not degraded by the presence of narrow-band signals. The use of a common two-dimensional delay line (18) to provide the time compression avoids the need to maintain phase tracking among a plurality of separate parallel one-dimensional dispersive delay lines.
摘要翻译： 在扩频方向调查系统中，几个天线元件（10a-d）的输出通过啁啾的本地振荡器（14）和混频器（12a-d）逐渐地转换并施加到二维色散 滤波器（18），其将天线元件输出中的单个频率分量的结果压缩成窄脉冲。 限制器（24a-d）去除由色散延迟线（18）压缩的任何强窄带分量，使得检测扩频信号的进一步处理不会由于存在窄带信号而降级。 使用公共二维延迟线（18）来提供时间压缩避免了在多个分离的并行一维色散延迟线之间维持相位跟踪的需要。
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