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公开(公告)号：US4194204A
公开(公告)日：1980-03-18
申请号：US260703
申请日：1972-06-05
申请人： Frederick C. Alpers
发明人： Frederick C. Alpers
CPC分类号： G01S13/24 , G01S13/28 , G01S13/4427
摘要： An active microwave seeker for missile guidance against ships or permanentand targets. Frequency agility and pulse time compression are employed as means to provide a capability for tracking small targets in heavy sea clutter, to reduce target angular scintillation, and to reduce susceptibility to enemy jamming. The seeker tracks a selected target in yaw and range, and keeps its antenna pointed toward the target in pitch by use of its own altitude control.
摘要翻译： 用于导弹针对船舶或永久性地面目标的主动微波探测器。 采用频率敏捷性和脉冲时间压缩作为提供跟踪重海杂波中的小目标的能力的手段，以减少目标角闪烁，并降低对敌人干扰的敏感性。 寻道者在偏航和范围内跟踪所选择的目标，并通过使用其自身的高度控制将天线指向目标。
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公开(公告)号：US4064510A
公开(公告)日：1977-12-20
申请号：US697738
申请日：1976-06-18
申请人： Maurice Chabah
发明人： Maurice Chabah
CPC分类号： G01S13/9023
摘要： The invention relates to side-looking radar systems and more especially to high altitude airborne radar systems functioning at a high repetition frequency. In order to avoid ambiguities in regard to distance, the antenna comprises an additional channel which has a radiation pattern which has an odd symmetry about its axis and means are connected to said antenna for deriving the angular interval relative to the axis of the antenna of the direction of the obstacle corresponding to the received echoes. Gating means select the angular interval signal at the middle of the recurrence, for controlling the recurrence frequency of the radar and maintaining the ambiguous areas outside the selected observed area.
摘要翻译： 本发明涉及侧视雷达系统，更具体地涉及以高重复频率工作的高空机载雷达系统。 为了避免距离方面的歧义，天线包括附加通道，该通道具有关于其轴线具有奇对称性的辐射图案，并且装置连接到所述天线，用于导出相对于天线的天线的轴的角度间隔 对应于接收到的回波的障碍物的方向。 选通意味着在复发中间选择角度间隔信号，用于控制雷达的复发频率，并保持所选观察区域以外的模糊区域。
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公开(公告)号：US4041341A
公开(公告)日：1977-08-09
申请号：US689896
申请日：1976-05-25
申请人： Gerald E. Hart
发明人： Gerald E. Hart
摘要： A pulsed doppler-radar system is utilized to determine if the terrain clearance of an aircraft drops below a predetermined aircraft safety clearance. The system includes a maximum-range doppler-frequency counter which counts the highest doppler frequency received for a maximum range and a range gate which receives and passes doppler frequencies from within a predetermined slant range. A reference-frequency generator generates a reference frequency related to the highest doppler frequency and cooperates with a frequency synthesizer to synthesize a frequency related to the computed doppler frequency for the aircraft safety clearance. The slant-range doppler frequencies are summed with the synthesizer frequency and a critical-frequency detector detects the sum frequency to determine if terrain clearance drops below the predetermined aircraft safety clearance.
摘要翻译： 使用脉冲多普勒雷达系统来确定飞行器的地形间隙是否降到低于预定的飞机安全距离。 该系统包括最大范围多普勒频率计数器，其计数最大范围接收的最高多普勒频率，以及范围门，其从预定的倾斜范围内接收和传播多普勒频率。 参考频率发生器产生与最高多普勒频率相关的参考频率，并与频率合成器协作以合成与计算出的多普勒频率相关的频率用于飞机安全距离。 倾斜多普勒频率与合成器频率相加，临界频率检测器检测和频率，以确定地形间隙是否下降到预定飞机安全距离以下。
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公开(公告)号：US4024537A
公开(公告)日：1977-05-17
申请号：US689694
申请日：1976-05-24
申请人： Gerald E. Hart
发明人： Gerald E. Hart
摘要： A doppler-radar system for computing terrain clearance of the projected flight path of an aircraft from a maximum-range doppler frequency and a doppler frequency for a known slant range. The apparatus includes a transmitter/receiver, a maximum-range doppler-frequency counter, a slant-range doppler-frequency counter, and a terrain-clearance computer which receives the outputs of the maximum-range and slant-range doppler-frequency counters to compute a depression angle and terrain clearance and provide an output of the terrain clearance to an indicator.
摘要翻译： 一种多普勒雷达系统，用于从已知倾斜范围的最大范围多普勒频率和多普勒频率计算飞机的预计飞行路径的地形间隙。 该装置包括发射机/接收机，最大范围多普勒频率计数器，倾斜范围多普勒频率计数器和接收最大范围和倾斜范围的多普勒频率计数器的输出的地形清除计算机 计算俯角和地形间隙，并向指示器提供地形间隙的输出。
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公开(公告)号：US3996589A
公开(公告)日：1976-12-07
申请号：US497702
申请日：1974-08-15
申请人： Maurice Earl Breese
发明人： Maurice Earl Breese
CPC分类号： G01S13/4481 , G01S13/4472 , G01S13/60
摘要： Structure, such as a variable coupler, is employed to effectively rotate monopulse beam components through any given angle about the monopulse antenna axis. Useful in an airborne velocity measuring doppler radar, where servo means control the value of the given angle so that the rotated beam components are maintained properly aligned with an isodop, despite aircraft drift.
摘要翻译： 采用诸如可变耦合器的结构来有效地使单脉冲波束分量围绕单脉冲天线轴线旋转任何给定的角度。 可用于机载速度测量多普勒雷达，其中伺服装置控制给定角度的值，使得旋转的波束分量保持与等离子体适当对准，尽管飞机漂移。
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公开(公告)号：US3982244A
公开(公告)日：1976-09-21
申请号：US591925
申请日：1975-06-30
申请人： Robert C. Ward , Franklin M. Waddle
发明人： Robert C. Ward , Franklin M. Waddle
CPC分类号： G01S7/4021
摘要： The radar antenna, monopulse comparator network, and mixer simulator is a al-time computer controlled simulation of the antenna, monopulse comparator network, and rf mixer of tracking radar systems which normally transform the angle of arrival of incoming signals into amplitude and phase modulations on intermediate frequency sum and difference channel signals. The simulator produces appropriately modulated intermediate frequency (IF) sum and difference channel signals as a function of computer derived spatial angle information. These IF signals correspond to the radar-hardware-derived sum and difference channel IF signals.
摘要翻译： 雷达天线，单脉冲比较器网络和混频器模拟器是天线，单脉冲比较器网络和跟踪雷达系统的rf混频器的实时计算机控制仿真，其通常将输入信号的到达角变换为幅度和相位调制 中频和差信道信号。 模拟器根据计算机衍生的空间角度信息产生适当调制的中频（IF）和和差信道信号。 这些IF信号对应于雷达硬件导出的和差和信道IF信号。
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公开(公告)号：US3942177A
公开(公告)日：1976-03-02
申请号：US166754
申请日：1971-07-28
申请人： Paul M. Danzer , Giles E. Rae
发明人： Paul M. Danzer , Giles E. Rae
CPC分类号： G01S3/48 , G01S13/4454
摘要： In the measurement of the phase difference (proportional to the elevation angle of a target) provided by the radar target signals that are received by each antenna of an antenna array, a comparison of the responses of the signal processing circuitry to the radar target signals and to two signals with an adjustable known phase difference, causes the known phase difference to change until the result of the comparison is a null. The known phase difference, at the time that the comparison provides a null, is equal to the phase difference provided by the radar target signals and is independent of phase errors introduced by the processing circuitry.
摘要翻译： 在由天线阵列的每个天线接收的雷达目标信号提供的相位差（与目标的仰角成比例）的测量中，将信号处理电路的响应与雷达目标信号进行比较，以及 到具有可调节的已知相位差的两个信号，导致已知的相位差改变，直到比较的结果为空。 在比较提供零点时，已知的相位差等于由雷达目标信号提供的相位差，并且与由处理电路引入的相位误差无关。
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公开(公告)号：US3936838A
公开(公告)日：1976-02-03
申请号：US470574
申请日：1974-05-16
申请人： Peter Foldes
发明人： Peter Foldes
CPC分类号： H01Q25/04 , G01S13/4445
摘要： A multimode coupling system includes a funnel-shaped coupling member having one coupling aperture at the narrow end thereof, one larger coupling aperture at the larger end thereof, and a plurality of coupling apertures in the side wall thereof. A first and second of these side wall apertures lie in a first common plane on diametrically opposite surfaces of the member. A third and fourth of these apertures lie in a second common plane orthogonal to the first and on diametrically opposite surfaces of the member. A coupling circuit is provided between the plurality of side wall coupling apertures and an asymmetrical mode terminal for advancing the phase of signals at the first and third side wall apertures approximately 90.degree. relative to the phase of signals at the second and fourth side wall apertures to thereby achieve coupling of asymmetrical mode signals between the larger end and the asymmetrical mode terminal.
摘要翻译： 多模耦合系统包括漏斗形联接构件，其在其窄端处具有一个联接孔，在其较大端处具有一个较大的联接孔，以及在其侧壁中的多个联接孔。 这些侧壁孔中的第一和第二个位于构件的直径相对的表面上的第一公共平面中。 这些孔中的第三和第四孔位于与构件的第一和直径相对的表面正交的第二共同平面中。 耦合电路设置在多个侧壁耦合孔和非对称模式端子之间，用于使第一和第三侧壁孔处的信号相位相对于第二和第四侧壁孔处的信号相位大约90°， 从而实现较大端和不对称模式端之间的不对称模式信号的耦合。
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公开(公告)号：US3921173A
公开(公告)日：1975-11-18
申请号：US49743474
申请日：1974-08-14
申请人： US NAVY
发明人： THOMSON DON N
CPC分类号： G01S13/4436 , G01S7/34
摘要： The invention comprises a system for controlling and normalizing the gain of the difference I.f. I.F. to the gain of the sum I.F. amplifier in a monopulse radar. A pulsed, I.F., pilot signal is applied to both the sum and difference I.F. amplifiers at predetermined intervals chosen so that the pilot signal does not interfere with the echo return signal. The outputs from these I.F. amplifiers are gated at the predetermined intervals coinciding with the application of the I.F. pilot signal. These gated, sum-and difference-amplifier, pilot signals are envelopedetected and then applied to a differential amplifier. This differential amplifier generates a signal representative of the difference between the sum and difference amplifier pilot signals and applies this signal to the difference, I.F. amplifier to control its gain. The sum I.F. amplifier has a conventional A.G.C. system for gain control. The control signal generated by this conventional A.G.C. system is also applied to a circuit for controlling the signal level of the I.F. pilot signal so it is inversely proportional to the signal gain level of the sum I.F. amplifier. This controlled I.F. pilot signal is then applied to the sum and difference I.F. amplifiers (as stated above) via a hybrid network and directional couplers, at a time chosen so that it does not interfere with the predicted echo-return.
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公开(公告)号：US3891988A
公开(公告)日：1975-06-24
申请号：US33827164
申请日：1964-01-16
申请人： US NAVY
CPC分类号： G01S13/72
摘要： 1. In a search-while-track radar system for determining the angular position of a target without stopping the antenna, SATURATED AMPLIFIER MEANS ADAPTED TO RECEIVE VIDEO RETURN SIGNAL PULSES FROM SAID TARGET, SAID SATURATED AMPLIFYING MEANS HAVING A STORAGE MEANS FOR STORING THE BIAS DEVELOPED BY SAID SATURATED AMPLIFIER MEANS AND ALLOWING SAID BIAS TO DECAY AT A RATE PROPORTIONAL TO THE CHANGE IN AMPLITUDE OF THE VIDEO RETURNS FROM PULSE TO PULSE, AND COMPARATOR CIRCUIT MEANS CONNECTED TO SAID SATURATED AMPLIFIER MEANS FOR COMPARING THE OUTPUT OF SAID AMPLIFIER WITH PULSES WHICH IDENTIFY THE LOBE IN WHICH THE VIDEO SIGNALS ARE RECEIVED.
摘要翻译： 1.在用于确定目标的角度位置而不停止天线的搜索轨道雷达系统中，饱和放大器装置适合于从目标接收视频返回信号脉冲，具有用于存储偏移的存储装置的均匀的饱和放大装置 由达到饱和的放大器装置开发，并允许以比例变化的脉冲比例，从脉冲到脉冲的视频返回的比例降低比例，以及连接到饱和放大器装置的比较器电路，用于将比较放大器的输出与脉冲相比较 识别视频信号接收到的信息。
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