公开(公告)号：US3858208A

公开(公告)日：1974-12-31

申请号：US32976373

申请日：1973-02-05

Applicant: HUGHES AIRCRAFT CO

Inventor： PARKE D ,  GOLDBERG G ,  PRIESTER W ,  SCHEIDLER S

IPC: G01S13/10 ,  G01S13/12 ,  G01S13/524 ,  G01S13/528 ,  G01S13/66 ,  G01S13/70 ,  G01S13/87 ,  H01Q1/28 ,  H01Q25/00 ,  G01S9/10

CPC classification number: H01Q1/28 ,  G01S13/106 ,  G01S13/12 ,  G01S13/524 ,  G01S13/528 ,  G01S13/66 ,  G01S13/70 ,  G01S13/87 ,  G01S13/872 ,  H01Q25/00

Abstract: A radar system is disclosed which uses an established track predicted range, Rp, and radial velocity, Rp, of a target to select a frequency, F, and PRF for optimum range and doppler visibility in tracking. The procedure is to tentatively select a frequency not subject to interference; determine the highest possible band of PRF''s allowable between adjacent velocity blind regions computed from the equation

Abstract translation: 公开了一种雷达系统，其使用目标的已建立的轨道预测范围Rp和径向速度R p来选择频率F和PRF以获得跟踪中的最佳范围和多普勒可见度。 程序暂时选择不受干扰的频率; 确定从等式（PRF）= 2RpF / cn +/- DELTA（PRF）计算的相邻速度盲区之间允许的PRF的最高可能频带，其中DELTA（PRF）是其中心的速度盲区的已知半宽，c 是光速，n = 1,2,3。 。 。 确定目标在Rn和Rn + delta之间的范围盲区之外的允许频带内的最高PRF，其中delta是盲区的宽度，并且从第R个盲区的Rn由Rn = cn / 2（PRF）确定 ）其中n = 1,2,3。 。 。 。 初步检查确定目标的预测范围是否在原点的已知范围盲区delta'。 如果在允许的频带中没有发现具有范围可见性的PRF，则会发现PRF的另一个较低的允许频带（如果有的话），并检查范围可见性，直到找到有用的PRF或已经检查了所有可能性。 在后一种情况下，选择另一个频率，并重复该过程，直到找到有用的PRF或已经检查了所有频率。

公开(公告)号：US3840174A

公开(公告)日：1974-10-08

申请号：US36454073

申请日：1973-05-29

Applicant: RCA CORP

Inventor： CRAFT R

IPC: G01S13/70 ,  G06F7/62 ,  G06F15/20 ,  G04F11/06

CPC classification number: G01S13/70 ,  G06F7/62

Abstract: A clock signal of a first frequency is applied to a first binary counter. The first counter provides an output signal after counting to a predetermined binary number. The output signal causes a second clock signal, of a second frequency, to be applied to a second counter. The second counter provides a second output signal after counting to a binary number which is the complement of the predetermined binary number. The temporal position of the second output signal is varied, in steps equal to the difference in the periods of the two clocks, by varying the predetermined binary number.

公开(公告)号：US3792471A

公开(公告)日：1974-02-12

申请号：US3792471D

申请日：1972-05-08

Applicant: KINGSBURY K

Inventor： KINGSBURY K

IPC: G01S13/70 ,  G01S9/14

CPC classification number: G01S13/70

Abstract: There is disclosed a radar tracking system wherein a range measurement is obtained by measuring the interval between the transmission of an interrogating pulse and the receipt of a reply pulse from a transponder. A single range gate pulse is generated by analogue means and the range measurement is terminated by the coincident arrival of the leading edge of the first of a coded reply pulse and the range gating voltage pulse at the input of a range lock loop. The range lock loop functions to maintain a predetermined minimum overlap between the leading edge of the reply pulse and the trailing edge of the range gate voltage pulse. A disable signal is applied to the range lock loop after receipt of each pulse that coincides with the range gate pulse. However, to prevent excessive disabling by unsynchronized high pulse repetition frequency interference or jamming pulses, and to allow the loop to remain locked to the desired signal in the presence of this interference, all disable signals are overidden (ignored) for a predetermined time period following receipt of each valid pulse. The range lock loop is re-enabled by sensing the presence of valid pulse information in a memory. The memory is disabled after each sensing of the state of the memory flipflop and is reenabled by the storage in its memory of the next succeeding valid pulse.

Abstract translation: 公开了一种雷达跟踪系统，其中通过测量询问脉冲的发送和从应答器接收到应答脉冲之间的间隔来获得范围测量。 通过模拟装置产生单范围门脉冲，并且通过编码应答脉冲的第一个的前沿和范围锁定环路的输入处的量程门控电压脉冲的重合到达来终止距离测量。 范围锁定环用于维持应答脉冲的前沿和范围栅极电压脉冲的后沿之间的预定的最小重叠。 在接收到与范围门脉冲一致的每个脉冲之后，禁用信号被施加到范围锁定环路。 然而，为了防止由于不同步的高脉冲重复频率干扰或干扰脉冲而导致的过度禁用，并且在存在这种干扰的情况下允许环路保持锁定到期望的信号，所有禁用信号在以下的预定时间段被覆盖（忽略） 收到每个有效脉冲。 通过检测存储器中有效脉冲信息的存在来重新启用范围锁定环路。 在每次检测到存储器触发器的状态之后，存储器被禁止，并且由其存储器中的存储器重新使能下一个有效脉冲。

公开(公告)号：US3745574A

公开(公告)日：1973-07-10

申请号：US3745574D

申请日：1971-06-08

Applicant: DASSAULT ELECTRONIQUE

Inventor： DAUGNY B ,  SCHIFRINE J

IPC: G01S13/44 ,  G01S13/66 ,  G01S13/70 ,  G01S9/06

CPC classification number: G01S13/44 ,  G01S13/66 ,  G01S13/70

Abstract: A radar telemetering system for pinpointing targets employs means for defining, on the basis of incoming echo pulses, a line or plane of referance dividing the space into two off-boresight zones. The radar receiver supplies signal pulses to a range-gate selector in response to the arriving echoes, the selector controlling in turn an off-boresight-angle discriminator whose dc-output voltage readjusts the selector in a sense tending to reduce the discriminator output to zero. The present invention relates to radar systems for pinpointing a target in a telemetering radar, more particularly but not exclusively to airborne telemetering radar aystems for use in air to ground attack by aircraft. An object of the present invention is to improve such radar systems to make them as accurate as possible without greatly increasing their weight, size, complexity or production costs. The radar receiver described herein is capable of defining a line or at least a plane in space with the aid of a conventional device called an ''''angle discriminator''''. The radar receiver further includes a conventional range-gate selector. According to the invention the radar receiver comprises a servocontrol loop so designed that, on the one hand, the reflected wave energy arriving at this receiver gives rise to echo pulses supplied to a range-gate selector which in turn controls an angle discriminator and that, on the other hand, the range gate or telemetering window of this selector is shifted by a d-c voltage obtained from the output of the discriminator, preferably through the intermediary of an amplifier, in a direction which tends to nullify this output voltage. Such a d-c voltage, as is well known per se, corresponds in sign and magnitude to the deviation of the target position from the reference line or plane established by the discriminator.

公开(公告)号：US3713150A

公开(公告)日：1973-01-23

申请号：US3713150D

申请日：1959-08-05

Applicant: US AIR FORCE

Inventor： SICONOLFI J

IPC: G01S13/70 ,  G01S9/02

CPC classification number: G01S13/70

Abstract: A radar system employing automatic range tracking including means for automatically switching the range tracking loop open whenever a video signal from any source occurs immediately prior to the target signal; and to hold the loop open until the disturbing signal passes out of range. The advantage of this automatic switching is that it operates fast enough to give protection over sweep jamming signals.

Abstract translation: 一种采用自动范围跟踪的雷达系统，包括当来自任何源的视频信号在目标信号之前立即自动切换距离跟踪环路的装置; 并保持环路打开，直到干扰信号超出范围。 这种自动切换的优点是其运行速度足够快，以保护扫描干扰信号。

公开(公告)号：US3702475A

公开(公告)日：1972-11-07

申请号：US3702475D

申请日：1970-08-28

Applicant: KING RADIO CORP

Inventor： ALDEN JOHN R ,  AKER JOHN L

IPC: G01S13/70 ,  G01S9/14 ,  G01S9/56

CPC classification number: G01S13/70

Abstract: A DME having means for facilitating the rapid identification of its own replies from a plurality of received replies sequentially tests only the time/distance corresponding to the next occuring reply pulse received and uses a two counter digital concept to count both valid and invalid replies in making the decision to switch from the search mode to the track mode of operation.

Abstract translation: 具有用于便于从多个接收到的答复快速识别其自己的答复的装置的DME顺序地仅测试与接收到的下一个发生的应答脉冲相对应的时间/距离，并且使用两个计数器数字概念对有效和无效的回复进行计数 决定从搜索模式切换到轨道操作模式。

公开(公告)号：US3618085A

公开(公告)日：1971-11-02

申请号：US3618085D

申请日：1969-11-14

Applicant: COLLINS RADIO CO

Inventor： HALL THOMAS L

IPC: G01S13/70 ,  G01S13/78 ,  G01S9/14 ,  G01S9/56

CPC classification number: G01S13/70 ,  G01S13/785

Abstract: This invention relates to an error detector for distancemeasuring radio equipment (DME) comprising digital means for detecting a reply signal arriving at any time during the range gate established by the DME system and generating a signal indicative of the amount and direction of displacement of the reply signal arrival from the range gate center.

公开(公告)号：US3588897A

公开(公告)日：1971-06-28

申请号：US3588897D

申请日：1969-07-03

Applicant: US NAVY

Inventor： KONRAD THOMAS G

IPC: G01S13/70 ,  G01S13/95 ,  G01S9/14 ,  G01W1/08

CPC classification number: G01S13/951 ,  G01S13/70 ,  Y02A90/18

Abstract: METEROLOGICAL SENSING EQUIPMENT IS MOUNTED ABOARD AN AIRCRAFT TO SAMPLE THE ATMOSPHERE DURING FLIGHT. THE AIRCRAFT IS THEN TRACKED WITH AN AUTOMATIC TRACKING GATE WHILE SAMPLING THE RADAR RETURN FROM THE ATMOSPHERE WITH A DATA GATE PLACED JUST AHEAD OF OR BEHIND THE TRACKING GATE, I.E., THE AIRCRAFT, IN TIME OR EQUIVALENTLY, IN RANGE. THE POSITION OF THE AIRCRAFT IN SPACE IS RECORDED AND, BY USING THE KNOWN TIME OFFSET BETWEEN THE TRACKING AND DTA GATES, THE POSITION OF THE ATMOSPHERIC VOLUME SAMPLED BY THE RADAR IS ALSO KNOWN BOTH RELATIVE TO THE AIRCRAFT (METEROLOGICAL SENSORS) AND IN ABSOLUTE TERMS AS A FUNCTION OF TIME, REGARDLESS OF AIRCRAFT PATTERN OR FLIGHT PATH.

公开(公告)号：USRE27064E

公开(公告)日：1971-02-16

申请号：US27064D

申请日：1969-07-24

IPC: G01S13/56 ,  G01S13/58 ,  G01S13/70

CPC classification number: G01S13/582 ,  G01S13/56 ,  G01S13/70

Abstract: AN ELECTRICAL DETECTING APPARATUS UTILIZING A FREQUENCY SHIFTING OSCILLATOR FOR GENERATING A RADIO FREQUENCY SIGNAL WHICH IS TRANSMITTED BY A RADIATING MEANS IN A PROPAGATED WAVE AND INTERCEPTED BY A TARGET RESULTING IN A REFLECTED WAVE WHICH IS DETECTED BY A RECEIVING MEANS WHEREIN THE RECEIVED REFLECTED WAVE IS USED TO SHIFT THE OSCILLATOR OPERATING FREQUENCY FOR INDICATING TARGET DETECTION BY A DOPPLER FREQUENCY SHIFT IS SHOWN.

公开(公告)号：US3508258A

公开(公告)日：1970-04-21

申请号：US3508258D

申请日：1968-07-24

Applicant: ERICSSON TELEFON AB L M

Inventor： SJOSTROM LARS WERNER

IPC: G01S13/66 ,  G01S13/70 ,  G01S9/02

CPC classification number: G01S13/70 ,  G01S13/66