-
公开(公告)号：US4652882A
公开(公告)日：1987-03-24
申请号：US431898
申请日：1982-09-30
CPC分类号： G01S13/4445 , G01S13/18 , G01S13/449 , G01S13/685 , G01S7/28
摘要： A monopulse receiver, wherein a desired wide dynamic range is achieved for range gated monopulse sum and difference signals, is shown to incorporate: (a) a multiplexer for time-multiplexing such signals; (b) a first and a second receiver channel responsive to the time-multiplexed signals, each such channel having a dynamic range less than the desired wide dynamic range and greater than one-half the desired wide dynamic range, the gains in such channels being offset so that together such channels have the desired dynamic range; (c) a first and a second sampler and analog-to-digital converter, respectively, responsive to the signals out of the first and the second receiver channel, for producing digital words indicative of the amplitude of each component signal in the time-multiplexed signals; and (d) logic and control means for forming bytes from predetermined portions of each one of the digital words and for selecting the byte indicative of the amplitude of each component signal.
摘要翻译： 示出了对于范围选通单脉冲和和差信号实现期望的宽动态范围的单脉冲接收机，其包括：（a）用于对这些信号进行时分复用的多路复用器; （b）响应于时间复用信号的第一和第二接收机通道，每个这样的信道具有小于期望的宽动态范围的动态范围并且大于所需宽动态范围的一半，这些信道中的增益是 偏移，使得这样的通道一起具有期望的动态范围; （c）分别响应于第一和第二接收机信道中的信号的第一和第二采样器和模数转换器，用于产生指示时分复用的每个分量信号的振幅的数字字 信号; 以及（d）用于从每个数字字的预定部分形成字节并用于选择表示每个分量信号的幅度的字节的逻辑和控制装置。
-
公开(公告)号：US4431995A
公开(公告)日：1984-02-14
申请号：US245504
申请日：1981-03-19
申请人： Paul Barton , Peter K. Blair , William D. Waddoup
发明人： Paul Barton , Peter K. Blair , William D. Waddoup
CPC分类号： G01S3/42 , G01S13/68 , H01Q3/2605
摘要： A phased array radar system, such as may be used in a low-angle tracking radar or direction finding equipment, includes a multi-channel digital filter to remove unwanted multipath signals. The R.F. signals from the array are first converted to zero I.F. and digitized. After n-channel Doppler filtering (13) the digital signals are subjected to filtering (14) either to effect band-pass spatial filtering, thereby attenuating generally all signals arriving outside preset angular limits, or notch filtering which heavily attenuates signals arriving from one particular angle. In one embodiment spatial filtering is followed by notch filtering. The filtered signals are then beam-formed (15) before being applied to further digital processing, such as beam peak tracking (16).
摘要翻译： 诸如可用于低角度跟踪雷达或测向设备的相控阵雷达系统包括用于去除不需要的多径信号的多通道数字滤波器。 R.F. 来自阵列的信号首先转换为零I.F. 并数字化。 在n通道多普勒滤波（13）之后，对数字信号进行滤波（14）以进行带通空间滤波，从而通常衰减所有到达预设角度限制的信号，或陷波滤波，其大大衰减从一个特定的信号到达的信号 角度。 在一个实施例中，空间滤波之后是陷波滤波。 然后将滤波后的信号进行波束形成（15），然后再应用于进一步的数字处理，如波束峰值跟踪（16）。
-
123.发明授权Method of and apparatus for angular measurement in target tracking radar systems 失效目标跟踪雷达系统中角度测量的方法和装置
公开(公告)号：US4219816A
公开(公告)日：1980-08-26
申请号：US972886
申请日：1978-12-26
申请人： Albert Schenkel , Urs Leuenberger
发明人： Albert Schenkel , Urs Leuenberger
CPC分类号： G01S13/4418
摘要： Radar tracking or homing units employing three or more primary radiators and utilizing an arrangement of a sum-difference network and signal processing stage to form sum, difference and cross-related or cross-term signals and to effect correction of errors introduced due to the presence or apparent presence of two targets with the resolvable radar volume, using a stipulated method of signal processing.
摘要翻译： 使用三个或更多个一次辐射器并利用和差网络和信号处理阶段的布置的雷达跟踪或归位单元以形成和，差异和交叉相关或交叉项信号，并且实现由于存在导致的错误的校正 或具有可分辨雷达体积的两个目标的明显存在，使用规定的信号处理方法。
-
公开(公告)号：US4204655A
公开(公告)日：1980-05-27
申请号：US964767
申请日：1978-11-29
申请人： Joseph F. Gulick , James S. Miller , Alan J. Pue
发明人： Joseph F. Gulick , James S. Miller , Alan J. Pue
CPC分类号： F41G7/222 , G01S13/685
摘要： A wide bandwidth interferometer which may be employed in a guidance systemor a rolling missile delays the radar signals detected by one of the antennas by a fixed amount and the signals detected by the other antenna by a variable amount prior to their multiplication in a device which first advances the phase of one of the signals by 90.degree.. The product signal, which is proportional to the sine of the angle between the rolling axis and the line-of-sight to the target, is integrated in a limited-integrator whose output is summed with a pick-off signal from an onboard gyroscope. The sum signal determines the amount of the variable delay, while the output of the integrator controls the gyroscope to align it with the radar signal direction and the missile steering apparatus to home it on target.
摘要翻译： 可用于滚动导弹的引导系统中的宽带宽干涉仪将天线之一检测到的雷达信号以固定的量延迟，并且由另一天线检测到的信号在它们乘法之前被可变量延迟， 首先将其中一个信号的相位提前90度。 与滚动轴和目标视线之间的角度的正弦成正比的乘积信号被集成在有限积分器中，该积分器的输出与来自机载陀螺仪的拾取信号相加。 总和信号确定可变延迟量，而积分器的输出控制陀螺仪将其与雷达信号方向对准，并将导弹转向装置置于目标上。
-
公开(公告)号：US3882500A
公开(公告)日：1975-05-06
申请号：US41453273
申请日：1973-11-09
申请人： PHILIPS CORP
发明人： SIKORA HARALD
IPC分类号： G01S13/52 , G01S13/534 , G01S13/68 , G01S9/02
CPC分类号： G01S13/68
摘要： Pulse-modulated radar system with conical scanning and utilizing two MTI filters. Due to the pulse modulation and the Doppler shift of the echo signals, disturbing frequency components can appear in the range of the scan frequency after coherent detection. This disturbance is avoided by utilizing two quadrature receiver channels. The amplitude of the echo signals is determined by the vector sum of real and imaginary Doppler signal components.
-
公开(公告)号：US3831174A
公开(公告)日：1974-08-20
申请号：US32976273
申请日：1973-02-05
申请人： HUGHES AIRCRAFT CO
发明人： PARKE D , PRIESTER W , KING D , GOLDBERG G , GEBHARDT R
IPC分类号： G01S13/22 , G01S13/528 , G01S13/66 , G01S13/68 , G01S9/06
CPC分类号： G01S13/528 , G01S13/68
摘要： An airborne MTI radar system is disclosed for searching and tracking airborne targets over large bodies of water. In the search mode, returns from staggered PRF''s are used to resolve range ambiguity of targets, and first and second multipath returns are used to more positively identify an airborne target for automatic acquisition. The number of target returns counted (1, 2 or 3) at each PRF combined with the numbers at the other two PRF''s yields a plot combination count which serves to indicate the ''''quality'''' of a target in selecting new targets for tracking, but first each target is correlated with targets already being tracked. Uncorrelated targets are then checked as to quality by reordering the combination of target return counts in descending order and checking the resulting combination number, Qp, against a predetermined minimum acceptable plot quality, QM, for the range of the target and the sea state. If this check is passed by a particular target, it is entered into a table for automatic acquisition, provided the track store is not full to capacity; otherwise, the target is set up for display only for possible manual acquisition of track. Once acquired, the target is tracked automatically.
摘要翻译： 公开了一种机载MTI雷达系统，用于搜索和跟踪大型水体上的空中目标。 在搜索模式中，交错PRF的返回用于解决目标的范围模糊度，第一和第二多路径返回用于更积极地识别用于自动采集的机载目标。 每个PRF计算的目标收益（1,2或3）的数量与其他两个PRF的数字相结合，产生一个绘图组合计数，用于指示目标在选择新的跟踪目标时的“质量”，但首先 每个目标与已被跟踪的目标相关。 然后通过按照降序对目标返回计数的组合进行重新排序来检查不相关的目标，并根据目标和海况的范围的预定最小可接受的绘图质量QM来检查所得到的组合数目Qp。 如果该检查由特定目标通过，则将其输入到表中进行自动采集，条件是跟踪存储不满足容量; 否则，目标设置为只显示可能的手动采集轨道。 一旦获得，目标将被自动跟踪。
-
公开(公告)号：US3821738A
公开(公告)日：1974-06-28
申请号：US27634472
申请日：1972-07-31
发明人： QUESINBERRY E , GLOVER C , VAN HOOK B
CPC分类号： G01S13/68
摘要： A system for positioning an antenna of a tracking radar system, particularly of the type employing a driven beam reflector of the type utilized in a cassegrain antenna system, without the use of rate gyros. A target line-of-sight error signal representing the error between the radar beam line-of-sight and the target lineof-sight in a line-of-sight coordinate system is generated and then referenced to a fixed coordinate system. In a radar system employing an antenna having an axis system corresponding to the beam line-of-sight axis system, the line-of-sight error signal is referenced to the fixed coordinate system by first referencing the error signal to an aircraft axis system and then to the fixed coordinate system to obtain a fixed coordinate referenced error signal. The fixed coordinate referenced line-of-sight error signal may then be employed to generate fixed coordinate referenced line-of-sight error rate and position signals through the use of a predetermined transfer function and an integrator having a predetermined, fixed coordinate system referenced constant of integration. The line-of-sight position signals referenced to the fixed coordinate system may then be used to generate antenna angular pointing error signals which may be used to drive the antenna in a direction tending to null the line-ofsight error signal. In a system employing a driven beam reflecting element such as in a cassegrain system, the rotation affect of the reflector on the beam is taken into account in referencing the line-of-sight error signals to the fixed coordinate system. Moreover, the complex relationship between beam position and reflector position is accounted for in transforming to and from the fixed coordinate system. A method and system for generating line-of-sight angular rate signals for use in fire control systems is also disclosed.
-
公开(公告)号：US3757326A
公开(公告)日：1973-09-04
申请号：US3757326D
申请日：1971-12-21
申请人： US NAVY
发明人： WHITE W
CPC分类号： G01S13/685
摘要： A radar array is aimed to receive a signal directly reflected from a target as well as an image signal reflected from the target and from the adjoining ground surface or sea surface. An ambiguity introduced in the direct signal by the image signal, is resolved by a system which includes independent steering means and beam forming networks to form sum and difference signals from the image and the direct signals. These signals are mixed by computer controlled mixing networks to provide modified sum and difference signals. When the antenna pointing angle coincides with the target elevation angle, the modified direct sum and difference signals are uncontaminated by the image signals and vice versa. A composite error signal is obtained from the modified signals whose polarity is an indication of the error of the pointing angle. This signal is used to drive the steering mechanism into alignment with the direct path where a zero or null error signal is produced corresponding to the correct elevation angle of the target.
摘要翻译： 雷达阵列旨在接收从目标直接反射的信号以及从目标和邻接的地面或海面反射的图像信号。 由图像信号在直接信号中引入的模糊度由包括独立转向装置和波束形成网络的系统来解决，以形成来自图像和直接信号的和信号和差分信号。 这些信号由计算机控制的混合网络混合以提供修改的和差和差信号。 当天线指向角与目标仰角一致时，修正的直接和差和信号不受图像信号的污染，反之亦然。 从修正信号获得复合误差信号，其极性是指示角误差的指示。 该信号用于驱动转向机构与直接路径对准，其中产生对应于目标的正确仰角的零或零误差信号。
-
公开(公告)号：US3712562A
公开(公告)日：1973-01-23
申请号：US3712562D
申请日：1964-05-19
申请人： US NAVY
发明人： ALPERS F
摘要： In a circuit for discriminating against signals from extraneous targets received by a tracking device in which the planes of direction finding are rotated, such as the seeker of a rolling missile, the combination comprising: A. A FIRST INPUT TERMINAL FOR RECEIVING TARGET SIGNALS FROM ONE CHANNEL OF A TARGET SEEKER, B. A SECOND INPUT TERMINAL FOR RECEIVING TARGET SIGNALS FROM ANOTHER CHANNEL OF SAID TARGET SEEKER, C. ROLL RATE CIRCUIT MEANS FOR PRODUCING DELAYED SIGNALS SYNCHRONIZED TO THE ROLL OF SAID MISSILE, D. FIRST GATE CIRCUIT MEANS FOR PASSING SIGNALS RECEIVED AT SAID FIRST INPUT TERMINAL WHEN SIGNALS PRESENT AT SAID SECOND INPUT TERMINAL ARE AT A NULL AND BEING RESPONSIVE TO THE DELAYED SIGNAL OF SAID ROLL RATE CIRCUIT MEANS FOR BLOCKING SIGNALS RECEIVED AT SAID FIRST CIRCUIT MEANS, E. SECOND GATE CIRCUIT MEANS FOR PASSING SIGNALS RECEIVED AT SAID SECOND INPUT TERMINAL WHEN SIGNALS PRESENT AT SAID FIRST INPUT TERMINAL ARE AT A NULL AND BEING RESPONSIVE TO THE DELAYED SIGNALS OF SAID ROLL RATE CIRCUIT MEANS FOR BLOCKING SIGNALS RECEIVED AT SAID SECOND CIRCUIT MEANS.
摘要翻译： 在用于区分由跟踪装置接收的来自外部目标的信号的电路中，其中方向发现的平面被旋转，例如滚动导弹的探测器，该组合包括：
-
公开(公告)号：US3579239A
公开(公告)日：1971-05-18
申请号：US3579239D
申请日：1965-07-13
申请人： MARTIN MARIETTA CORP
CPC分类号： G01S13/4454 , G01S13/685
摘要： This invention relates to an angularly selective monopulse system for receiving desired pulse signals, having means for determining whether an incident pulse was received from within a desired angular range. If not so received, the pulse is rejected, but if it was so received, it is further processed and the information it provides is utilized for appropriately adjusting the center of the acceptance sector. This information may also be used for the physical steering of the vehicle or missile upon which it may be mounted.
-
-
-
-
-
-
-
-
-
搜索结果
249 条记录 (耗时 0.017 秒)
