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公开(公告)号：US3838423A
公开(公告)日：1974-09-24
申请号：US76747958
申请日：1958-10-15
申请人： SPERRY RAND CORP
发明人： DI MATTEO P
CPC分类号： G01S13/4445 , G01S13/66
摘要： 1. In a pulsed radar signal tracking receiver, first, second and third means for tracking received signals in the respective polar coordinates of range, elevation and azimuth, said second and third means for tracking being adapted to be actuated solely during the occurrence of a control signal, said first means for tracking in range producing a first output pulse positionable in range and a second output pulse upon the coincidence of said first output pulse and received signal, means resettable at the radar pulse repetition rate for deriving an auxiliary pulse in response to the first signal received during each radar pulse repetition interval, switching means for selectively applying when actuated said first output pulse as said control signal to said second and third means and for selectively applying when deactuated said auxiliary pulse as said control signal to said second and third means, and means for applying said second output pulse to said switching means for actuating said switching means.
摘要翻译： 在脉冲雷达信号跟踪接收机中，用于跟踪在范围，高程和方位角的相应极坐标中的接收信号的第一，第二和第三装置，用于跟踪的所述第二和第三装置适于仅在发生 控制信号，所述用于跟踪范围的第一装置产生可定位在范围内的第一输出脉冲和在所述第一输出脉冲和接收信号一致时产生第二输出脉冲，所述装置可以以雷达脉冲重复频率重新设置，以响应于导出辅助脉冲 涉及在每个雷达脉冲重复间隔期间接收到的第一信号，切换装置，用于当致动所述第一输出脉冲作为所述控制信号时选择性地施加到所述第二和第三装置，并且当停用所述辅助脉冲作为所述控制信号时， 第三装置，以及用于将所述第二输出脉冲施加到所述开关装置用于致动所述开关的装置 瘙痒手段。
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公开(公告)号：US3631487A
公开(公告)日：1971-12-28
申请号：US3631487D
申请日：1970-03-09
申请人： COLLINS RADIO CO
发明人： HUNTSINGER DEAN P , TOTTEN FLOYD M
CPC分类号： G01S13/70
摘要： An all-digital, distance measuring radio equipment is disclosed wherein the duration of each cycle of operation is determined by a train of clock pulses which is applied to a plurality of counters. Detection of a reply signal triggers a search counter which then counts until the end of the cycle. At the end of the cycle the count acquired by the search counter is transferred into a memory counter which starts the subsequent cycle at this value, establishes a range gate upon reaching a count corresponding to the maximum range, starts counting again from zero and ends the cycle at the same count that it held at the start of the cycle. A decode counter counts from the start of each cycle to the center of the range gate and, upon receipt of the range gate center signal, applies its acquired value to a readout means to indicate distance.
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3.发明授权Radar extractor having means for estimating target location with a range cell 失效雷达提取器具有用于用范围单元估计目标位置的装置
公开(公告)号：US4152700A
公开(公告)日：1979-05-01
申请号：US662788
申请日：1976-03-01
申请人： Andrew R. Bodnar
发明人： Andrew R. Bodnar
CPC分类号： G01S13/18
摘要： A target extractor for radar systems which accurately determines the radial position of the target within the range cell containing the target. The azimuth of the target is determined by conventional extractor systems. An incremental target range is located with respect to a primary range cell boundary. The primary range cell is selected as the range cell which contains the maximum number of reflected transmitter pulses. The number of reflected transmitter pulses received in secondary range cells located radially below and radially above the primary range cell is determined by the target extractor. The target extractor also determines the ratio of the pulses detected in the secondary range cells which are located radially on each side of the primary range cell. The location of the target defined within the radial dimension of the primary range cell is determined by interpolation circuitry in the target extractor. The interpolation circuitry shifts the effective location of its output signal by an amount which is proportional to the determined ratio of the pulses in the secondary range cells.
摘要翻译： 雷达系统的目标提取器精确地确定目标在包含目标的范围单元内的径向位置。 目标的方位角由常规提取系统确定。 相对于主要范围单元格边界定位增量目标范围。 选择主范围单元作为包含反射发射器脉冲的最大数量的范围单元。 径向位于主范围单元的径向下方和径向上方的次级范围单元中接收的反射发射器脉冲的数量由目标提取器确定。 目标提取器还确定在次要范围单元中检测到的脉冲的比例，其位于主范围单元的每一侧的径向位置。 在主范围单元的径向尺寸内定义的目标的位置由目标提取器中的内插电路确定。 插值电路将其输出信号的有效位置移位一定量，其量与确定的次级范围单元中脉冲的比例成比例。
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公开(公告)号：US3805267A
公开(公告)日：1974-04-16
申请号：US26017872
申请日：1972-06-06
发明人： GERARD C
摘要： The present invention relates to an aircraft radar receiver for search and for tracking a target through one or more telemetry windows which, in the search phase, carry out distance scanning and which, on receiving a target echo, locks onto the same in order to supply telemetric information, said receiver comprising means for, during the search phase, desensitizing the radar receiver for the distance which corresponds to the altitude of the aircraft above the ground so that the altitude return signal does not cause the radar to switch to tracking state, wherein the desensitization means are inoperative when the altitude return signal occurs in the radar tracking state.
摘要翻译： 本发明涉及一种用于搜索和通过一个或多个遥测窗跟踪目标的飞行器雷达接收机，其在搜索阶段执行距离扫描，并且在接收到目标回波时锁定在其上以便提供 遥测信息，所述接收机包括用于在搜索阶段使雷达接收机对与飞机高于地面的高度相对应的距离脱敏的装置，使得高度返回信号不会使雷达切换到跟踪状态，其中 当雷达跟踪状态发生高度返回信号时，脱敏装置不起作用。
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公开(公告)号：US3976999A
公开(公告)日：1976-08-24
申请号：US407892
申请日：1973-10-19
申请人： Thomas A. Moore , Earl Gehman , George Huddleston
发明人： Thomas A. Moore , Earl Gehman , George Huddleston
CPC分类号： G01S13/70 , G06K9/00201
摘要： In a radar target acquisition system means are provided for analyzing the video return including an automatic gate circuit causing the range gate to sweep out, and to sequentially sample the video return; a filter acquisition video processing circuit including means for discriminating between random and sinusoidal amplitude modulation appearing on the video return and having known frequency characteristics equal to the scan and pulse repetition frequencies of the radar within the pass band of the filter circuit, and means for comparing the discriminated amplitude modulated video return signal to at least one established threshold; and a track circuit which remains de-activated during the sweeping mode and is activated upon command from the filter acquisition circuit. Means are provided for manually initiating the gate circuit and for inhibiting the track circuit to await response from the filter acquisition circuit.
摘要翻译： 在雷达目标采集系统中，提供了用于分析视频返回的装置，包括使得范围门扫出的自动门电路，并依次对视频返回进行取样; 滤波器采集视频处理电路，包括用于鉴别出现在视频返回上的随机和正弦振幅调制并具有等于滤波器电路的通带内雷达的扫描和脉冲重复频率的已知频率特性的装置，以及用于比较 所述鉴别的幅度调制视频返回信号为至少一个建立的阈值; 以及跟踪电路，其在扫描模式期间保持去激活，并且在来自滤波器采集电路的命令时被激活。 提供了用于手动启动门电路和阻止轨道电路等待来自滤波器采集电路的响应的装置。
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公开(公告)号：US3900848A
公开(公告)日：1975-08-19
申请号：US38134473
申请日：1973-07-20
申请人： SPERRY RAND CORP
发明人： MEARS WILLIAM E
CPC分类号： G01S13/787
摘要： In distance measuring equipment utilized in radio navigation, a detector is provided in the airborne receiver which locates the synchronous reply pulse from the ground transponder transmitted in response to an interrogation pulse from the airborne transmitter. This is accomplished digitally by a shift register that serves as a continuously operating memory during each range scan. The memory bits of the register represent a corresponding number of range intervals covering the range being scanned in each interrogation. Received pulses (which will include random pulses as well as the synchronous reply pulse if it is present) excite the input memory bit and are transferred along the register in synchronism with the range intervals of the scan; thus, at the end of the scan, pulse information will be stored in the register at those bits corresponding to range intervals at which pulses were received. This information is recirculated during the next range scan, and addition-subtraction logic at the input causes the non-synchronous pulses to be destroyed from memory and multiple pulse information to be accumulated in adjacent bits at the range at which a newly arriving pulse is received in synchronism with the recirculating information. Accordingly, by successive scans, a pulse train is accumulated at the range of the recurring synchronous reply pulse, range acquisition being confirmed when the fifth pulse of the train appears at the signal input. Having located the synchronous pulse, operation in the search mode ceases and the equipment commences range tracking and produces a continuous range indication that may be displayed to the pilot.
摘要翻译： 在无线电导航中使用的距离测量设备中，在机载接收机中提供检测器，该检测器定位响应于来自机载发射机的询问脉冲发射的地面转发器的同步应答脉冲。 这是由每个范围扫描期间用作连续操作存储器的移位寄存器数字地完成的。 寄存器的存储器位表示覆盖在每个询问中扫描的范围的相应数量的范围间隔。 接收脉冲（其将包括随机脉冲以及存在的同步应答脉冲）激发输入存储器位，并且与扫描的范围间隔同步地沿着寄存器传送; 因此，在扫描结束时，脉冲信息将以对应于接收脉冲的范围间隔的那些位被存储在寄存器中。 该信息在下一个范围扫描期间被再循环，并且输入处的加减法逻辑使得非同步脉冲从存储器中被破坏，并且多个脉冲信息将被存储在接收到新到达的脉冲的范围的相邻位中 与再循环信息同步。 因此，通过连续扫描，在循环同步应答脉冲的范围内累积脉冲串，当列车的第五脉冲出现在信号输入端时，确认范围获取。 在定位了同步脉冲之后，搜索模式的操作停止，设备开始范围跟踪，并产生可以显示给飞行员的连续范围指示。
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公开(公告)号：US3820113A
公开(公告)日：1974-06-25
申请号：US31491172
申请日：1972-12-14
发明人： GELLEKINK B , CLEMENS T
CPC分类号： G01S13/66
摘要： A target take-over circuit, being aligned with estimated target positions, causes a wide range gate to follow up a series of estimated range values. Each of these values render a counter position, which is compared with a previous reduced counter position to obtain a timing interval. During this interval the access to each of the range gate channels is enabled and disabled successively, while the range gate channel, supplied with a video signal, delivers a square-wave reference voltage, of which the duration corresponds with the target range, valid at the moment of detection. The range servo follows up said voltage, whereupon a tracking system is actuated.
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公开(公告)号：US3739379A
公开(公告)日：1973-06-12
申请号：US3739379D
申请日：1971-02-03
发明人： DAVIS D
CPC分类号： G01S13/70 , G01S13/18 , G01S13/53 , G01S13/882
摘要： A coherent pulse doppler altimeter system employing a single antenna wherein the transmit signal is a generated series of pulses the pulse width and repetition frequency of which are varied keeping the average power high although peak transmitter power can be low enough to permit utilization of all solid state components. The ground return pulse will have a doppler shift caused by the vertical component of the aircraft velocity and a doppler spread due to the horizontal velocity. The receiver is tuned to receive the first side band of the return signal. The receiver is range gated by a gate pulse which is varied as the pulse repetition frequency (PRF) is varied so that just the leading edge of a return pulse passes through the gate. Variations in PRF are controlled by the tracking of that leading edge by the range gate. The PRF is then counted to give altitude.
摘要翻译： 使用单个天线的相干脉冲多普勒高度计系统，其中发射信号是脉冲宽度和重复频率变化的生成的脉冲序列，保持平均功率高，尽管峰值发射机功率可以足够低以允许利用所有固态 组件。 接地返回脉冲将由飞行器速度的垂直分量和由于水平速度的多普勒扩展引起的多普勒频移。 接收机被调谐以接收返回信号的第一边带。 接收机是由脉冲重复频率（PRF）变化而改变的栅极脉冲的范围，使得只有返回脉冲的前沿通过栅极。 PRF的变化通过范围门跟踪该前沿来控制。 然后计算PRF以提供高度。
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公开(公告)号：US3868687A
公开(公告)日：1975-02-25
申请号：US54383655
申请日：1955-10-31
申请人： RCA CORP
发明人： GOLDMAN JR LEMAN , DUNN TED E
摘要： 14. In a radar ranging system, in combination, a stable source of sinusoidal oscillations; means for deriving from said source a series of first pulses spaced fixed intervals from one another; a source of randomly occurring pulses; selector means connected to receive said randomly recurring pulses and said first pulses for selecting certain ones of said first pulses at a randomly recurring rate; phase shifting means for shifting the phase of said sinusoidal oscillations; means for deriving from said phase shifted sinusoidal oscillations a series of second pulses; a step-down counter circuit; cyclic means operatively associated with said phase shifting means and receptive of said selected pulses for rendering said step-down counter operative beginning at a time in coincidence with a given one of said second pulses, the output of said step-down counter comprising a series of third pulses spaced a given plurality of times said fixed intervals from one another; selector means receptive of said third pulses for selecting a given one of said third pulses; and means including said cyclic gate means responsive to a shift in phase between said series of first pulses and said series of second pulses an amount approximately equal to one period of said series of third pulses for rendering said step-down counter responsive to the one of said second pulses spaced from said given second pulse an amount equal to one period of said series of third pulses in the direction opposite to that of said phase shift.
摘要翻译： 14.在雷达测距系统中，组合地形成稳定的正弦振荡源; 用于从所述源导出彼此间隔固定间隔的一系列第一脉冲的装置; 随机出现的脉冲源; 选择器装置被连接以接收所述随机循环脉冲和所述第一脉冲，用于以随机循环速率选择某些所述第一脉冲; 用于移动所述正弦振荡的相位的相移装置; 用于从所述相移正弦振荡中导出一系列第二脉冲的装置; 降压计数器电路; 与所述相移装置可操作地相关联的循环装置和接收所述选择的脉冲，用于在与给定的所述第二脉冲一致的时间开始使所述降压计数器起作用，所述降压计数器的输出包括一系列 第三脉冲彼此间隔给定多次所述固定间隔; 选择器意味着接收所述第三脉冲用于选择给定的所述第三脉冲; 以及包括所述循环门装置的装置，其响应于所述一系列第一脉冲和所述一系列第二脉冲之间的相位偏移大约等于所述一系列第三脉冲的一个周期，用于使所述降压计数器响应于 所述第二脉冲与所述给定的第二脉冲间隔开等于所述一系列第三脉冲在与所述相移方向相反的方向上的一个周期。
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公开(公告)号：US3827049A
公开(公告)日：1974-07-30
申请号：US31721772
申请日：1972-12-21
发明人： VAN STAADEN C , BODMER M , VAN HIJFTE H , GELLEKINK B
摘要： A radar system is provided with a first radar apparatus for the range and angle tracking of targets located at a relatively long range and with a second radar apparatus for at least the angle tracking of targets at a relatively short range. The radar apparatus both operate at an own wavelength, but they employ one and the same tracking antenna. The wavelength of the second radar apparatus is so selected that, in case a target being tracked at a relatively low altitude is within the range of said second radar apparatus, the interference caused by the receipt of target echoes reflected by the earth surface does not influence the antenna tracking movement. When a target being tracked is outside the range of the second radar apparatus, it is tracked by the first radar apparatus in range and in angle coordinates. When said target arrives within the range of the second radar apparatus, it can be tracked in angle coordinates by the latter radar apparatus and in range by the former radar apparatus.
摘要翻译： 雷达系统设有第一雷达装置，用于对位于较长距离的目标进行距离和角度跟踪，以及第二雷达装置，用于至少在较短范围内对目标进行角度跟踪。 雷达装置都以自己的波长工作，但它们采用同一个跟踪天线。 第二雷达装置的波长如此选择，使得在相对较低的高度跟踪的目标在所述第二雷达装置的范围内的情况下，由接收地球表面反射的目标回波引起的干扰不会影响 天线跟踪运动。 当被跟踪的目标在第二雷达装置的范围之外时，由第一雷达装置在范围和角度坐标上跟踪。 当所述目标在第二雷达装置的范围内到达时，可以由后一个雷达装置以前一个雷达装置在范围内跟踪角度坐标。
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