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公开(公告)号：US4394659A
公开(公告)日：1983-07-19
申请号：US227097
申请日：1980-12-12
申请人： Bernard Gellekink
发明人： Bernard Gellekink
CPC分类号： G01S13/4436 , G01S13/24 , G01S13/52 , G01S7/4021 , G01S7/4052 , G01S2007/4069
摘要： A monopulse radar comprising a pilot signal generator (20) for injecting phase and amplitude-defined pilot signals into the separate receiving channels (6-12, 3, 16-19) to obtain correction signals through the variation in the mutual phase and amplitude relationship between the separate receiving channels for correcting angle error signals derived from target return signals. The pilot signal generator (20) and the transmitter (1) are tunable and a control circuit is incorporated for adapting the pilot signal generator (20) relative to the frequency of the target return signals.
摘要翻译： PCT No.PCT / NL80 / 00012 Sec。 371日期1980年12月17日第 102（e）日期1980年12月12日PCT提交1980年4月8日PCT公布。 出版物WO80 / 02326 日期：1980年10月30日。一种单脉冲雷达，包括导频信号发生器（20），用于将相位和幅度定义的导频信号注入到分离的接收信道（6-12,3,16-19）中，以通过变化获得校正信号 在分离的接收通道之间的相位和幅度关系中，用于校正从目标返回信号导出的角度误差信号。 导频信号发生器（20）和发射机（1）是可调谐的，并且并入控制电路，用于相对于目标返回信号的频率使导频信号发生器（20）适配。
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公开(公告)号：US4298872A
公开(公告)日：1981-11-03
申请号：US153284
申请日：1980-05-27
申请人： William E. Rodgers
发明人： William E. Rodgers
CPC分类号： H01Q3/2629 , G01S7/2813 , H01Q21/29
摘要： A sidelobe blanking system is provided which uses as much of the existing radar tracking system as possible while requiring a minimal number of additional components. The sidelobe blanking system includes a guard antenna and two phase shifters the first of which is operably coupled to the main radar antenna's sum pattern. The phase shifters create signals of opposite polarities which represent the complex conjugate of the sum pattern from the main radar antenna. The system includes two summing circuits which add the signal received by the guard antenna to the complex conjugate signals of opposite polarity. The system also includes a phase detector which compares the outputs of the first and second summing circuits and generates a signal representative of the cosine of the relative phase angle. The polarity of the output of the phase detector is determinative of whether or not the target being detected is in the sidelobe region or the mainlobe region and is independent of any phase error between the main and guard antennas.
摘要翻译： 提供旁瓣消隐系统，其使用尽可能多的现有雷达跟踪系统，同时需要最少数量的附加组件。 旁瓣消隐系统包括保护天线和两个移相器，其中第一个移相器可操作地耦合到主雷达天线的总和模式。 移相器产生相反极性的信号，其表示来自主雷达天线的和图案的复共轭。 该系统包括两个加法电路，其将由保护天线接收的信号添加到具有相反极性的复共轭信号。 该系统还包括相位检测器，其比较第一和第二求和电路的输出并产生表示相对相位角的余弦的信号。 相位检测器的输出的极性决定于被检测的目标是否在旁瓣区域或主瓣区域中，并且与主天线和保护天线之间的任何相位误差无关。
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公开(公告)号：US4263521A
公开(公告)日：1981-04-21
申请号：US47187
申请日：1979-06-08
申请人： Stephen J. Senger
发明人： Stephen J. Senger
CPC分类号： H01Q3/02 , G01S13/68 , G11C27/026
摘要： An angle servo preamplifier for use in the tracking antenna servo drive sem of a precision tracking radar system. The angle servo preamplifier processes tracking error signals indicative of tracking antenna pointing errors with respect to a target. The preamplifier is comprised of an input differential amplifier stage, a phase control stage, a sample and hold stage and a power amplifier stage. In addition, interfacing circuitry is included for coupling the preamplifier to the azimuth/secant correction system of the tracking radar system. The sample and hold stage includes "deglitching" circuitry for suppressing sampling/switching transients. And, to accommodate a bipolar tracking error signal while utilizing a single voltage supply, the power amplifier stage performs d.c. level translation.
摘要翻译： 一种用于精密跟踪雷达系统的跟踪天线伺服驱动系统的角度伺服前置放大器。 角度伺服前置放大器处理指示相对于目标跟踪天线指向误差的跟踪误差信号。 前置放大器由输入差分放大器级，相位控制级，采样保持级和功率放大级组成。 此外，还包括接口电路，用于将前置放大器耦合到跟踪雷达系统的方位/割线校正系统。 采样和保持级包括用于抑制采样/开关瞬态的“降压”电路。 并且，为了在利用单个电压源的同时容纳双极跟踪误差信号，功率放大器级执行直流。 级别翻译。
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公开(公告)号：US4160975A
公开(公告)日：1979-07-10
申请号：US919596
申请日：1978-06-27
申请人： Fritz Steudel
发明人： Fritz Steudel
CPC分类号： G01S3/82 , G01S13/4409 , G01S13/685
摘要： In a radar system employing an array antenna and microwave circuitry coupled thereto for developing sum and difference signals, a correction circuit utilizes the sum and difference signals for providing increased accuracy to elevation and azimuthal angle measurements of wide bandwidth radar signals. A correction is applied to the difference signal by subtracting therefrom a weighted time derivative of the sum channel, the weighting being proportional to the boresight error slope and the sines of the elevation and azimuth angles.
摘要翻译： 在采用阵列天线和与其耦合的微波电路用于显影和信号和差分信号的雷达系统中，校正电路利用和差和差信号提供对宽带雷达信号的仰角和方位角测量的更高的精度。 通过从差分信号中减去和信道的加权时间导数，加权与视轴误差斜率和仰角和方位角的正弦成正比，对差分信号进行校正。
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公开(公告)号：US4052721A
公开(公告)日：1977-10-04
申请号：US643478
申请日：1975-12-22
申请人： Walter Lee Ross
发明人： Walter Lee Ross
CPC分类号： G01S13/9303 , G01S13/68 , G01S13/79
摘要： A digital tracker in a cooperative collision avoidance system capable of generating track gates and determining critical values of tau (time to collision) for at least 16 targets and to determine the presence of two targets of substantially similar ranges and to track two such co-range targets.
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公开(公告)号：US3896436A
公开(公告)日：1975-07-22
申请号：US23909562
申请日：1962-11-20
CPC分类号： G01S13/449 , G01S13/586 , G01S13/685
摘要： 1. A Doppler radar system, wherein a phase-sensitive detector demodulates a Doppler signal derived from an incoming signal from a moving target, the detector using a reference signal of the same frequency as the Doppler signal, comprising A TRANSMITTER, A PHASE SENSITIVE DETECTOR FOR DEMODULATING A Doppler signal, TWO COHERENT INCOMING SIGNAL DETECTORS EACH FED WITH REFERENCE SIGNAL FROM THE TRANSMITTER AND VIA DIVIDED PATHS WITH THE SAME REFLECTED INCOMING SIGNALS FROM A TARGET, TWO Doppler signal feed paths, one feeding a Doppler signal from one coherent detector to the signal input of the phase sensitive detector and the other feeding a Doppler signal from the other coherent detector to the reference input of the phase sensitive detector, PHASE SHIFT MEANS CONNECTED IN THE INCOMING SIGNAL PATH TO ONE OF THE COHERENT DETECTORS FOR INTRODUCING A QUADRATURE PHASE SHIFT BETWEEN THE TWO INCOMING SIGNALS APPLIED TO THE COHERENT DETECTORS AND, FURTHER PHASE SHIFT MEANS CONNECTED IN ONE OF THE FEEDPATHS TO THE PHASE SENSITIVE DETECTOR FOR INTRODUCING A FURTHER QUADRATURE PHASE SHIFT BETWEEN THE Doppler signals fed to the phase sensitive detector, whereby UNWANTED Doppler frequency double sideband signals in the outputs of the coherent detectors due to noise modulated transmitter signals mixed with the incoming signals result in opposing signals in the output of the phase sensitive detector.
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公开(公告)号：US3849779A
公开(公告)日：1974-11-19
申请号：US34560373
申请日：1973-03-28
申请人： US NAVY
发明人： BOYD W
CPC分类号： G01S13/68 , G01S13/422
摘要： A multiple target indicator and discriminator is provided for use on a tracking radar of the sequential lobe type. Multiple targets occurring within one radar beam-width cause the radar return signal to have a phase modulated component at the scan rate frequency and also an additional second harmonic, amplitude modulated component at twice the scan rate frequency. These modulated components are detected and removed from the radar return signal and used to provide a multiple target indicating signal. These modulated components are also used to produce an angle bias signal which, when added to an angle error signal in the radar angle track loop, causes the radar to track only one target in a formation of targets. Since the angle bias signal is developed directly from either the phase modulated component or the amplitude modulated component of the return signal produced by the multiple targets, such bias signal is responsive to any change in target reflectivity and thereby provides an adaptive angle bias signal.
摘要翻译： 提供多目标指示符和鉴别器用于顺序波瓣类型的跟踪雷达。 在一个雷达波束宽度内发生的多个目标导致雷达返回信号具有扫描速率频率的相位调制分量，以及扫描速率频率两倍的附加二次谐波调幅分量。 从雷达返回信号中检测和去除这些调制分量，并用于提供多目标指示信号。 这些调制分量也用于产生一个角度偏置信号，当角度误差信号被加到雷达角度轨道环路中时，该雷达只能在目标的形成中跟踪一个目标。 由于角度偏置信号直接由相位调制分量或由多个目标产生的返回信号的幅度调制分量产生，所以这种偏置信号响应于目标反射率的任何变化，从而提供自适应角度偏置信号。
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公开(公告)号：US3786508A
公开(公告)日：1974-01-15
申请号：US3786508D
申请日：1969-09-09
申请人： US NAVY
发明人： ORTON C , EHRESMAN A
摘要： A high speed angle gate for preventing the passage of an accept pulse in a seeker system if the incoming directional information is from a target outside prescribed angular limits. Two different difference amplifiers produce negative outputs when the input signal exceeds a predetermined value. The negative signal then cancels the positive enabling pulse by adding the two signals.
摘要翻译： 如果输入的方向信息来自目标在规定的限定角度之外，则用于防止探测器系统中的接受脉冲通过的高速角门。 当输入信号超过预定值时，两个不同的差分放大器产生负输出。 然后，负信号通过相加两个信号来消除正使能脉冲。
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公开(公告)号：US3781886A
公开(公告)日：1973-12-25
申请号：US3781886D
申请日：1972-05-22
CPC分类号： G01S13/68 , G01S13/422
摘要： A method is disclosed for target ray resolution in coherent, conically scanned radar when a target image is present. An envelope detector and frequency discriminator operate on the IF signal. The fundamental and second harmonic components of the conical scan out of the discriminator are used in a computer along with the DC, fundamental, and second harmonic of the envelope out of the detector to solve five equations in five unknowns. That yields the elevation angles to the target and its image. The larger of the two angles is selected as the elevation angle to the target. The first harmonic and the DC component of the envelope are employed to produce an estimate of the target azimuth angle.
摘要翻译： 公开了当存在目标图像时在相干，圆锥扫描雷达中的目标射线分辨率的方法。 信号检测器和鉴频器对IF信号进行操作。 鉴别器的锥形扫描的基波和二次谐波分量与计算机一起被用于检测器外的包络的直流，基波和二次谐波，以解决五个未知数的五个方程。 这产生与目标及其图像的仰角。 选择两个角度中较大的角度作为与目标的仰角。 使用包络的一次谐波和DC分量来产生目标方位角的估计。
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公开(公告)号：US3778829A
公开(公告)日：1973-12-11
申请号：US3778829D
申请日：1972-02-18
发明人： LONGUEMARE R , MOONEY D
CPC分类号： G01S13/685
摘要： A Guarded Monopulse Radar System is disclosed for generating azimuth and elevation difference (or error) signals proportional to the angular displacement of the detected radar target from the antenna boresight axis and for generating a sum signal indicative of the target range. The azimuth and elevation difference signals are modulated in quadrature with sine and cosine signals of a reference frequency. The modulated signals are then added to a portion of the sum signal to provide a composite signal. The aforementioned steps are performed at microwave frequencies and the resultant signals are subsequently converted to IF signals by ''''beating'''' with a signal derived from a local oscillator. IF signals corresponding to the sum signal and the composite signal are amplified in a circuitry including fast, automatic gain control (AGC). The amplified signals are then demodulated in accordance with the reference signal to provide signals indicative of azimuth and elevation errors.
摘要翻译： 公开了一种保护的单脉冲雷达系统，用于产生与检测到的雷达目标与天线远视轴的角位移成比例的方位角和高程差（或误差）信号，并用于产生指示目标范围的和信号。 方位角和高程差信号用参考频率的正弦和余弦信号进行正交调制。 然后将调制信号加到和信号的一部分以提供复合信号。 上述步骤在微波频率下执行，并且所得到的信号随后通过用本地振荡器导出的信号进行“殴打”而被转换成IF信号。 对于和信号和复合信号对应的IF信号在包括快速自动增益控制（AGC）的电路中被放大。 然后根据参考信号解调放大的信号以提供指示方位角和仰角误差的信号。
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