公开(公告)号：US4780856A

公开(公告)日：1988-10-25

申请号：US924734

申请日：1986-10-30

申请人： Marc Becquey

发明人： Marc Becquey

IPC分类号： G01V1/00 ,  G01V1/38 ,  G01V1/28 ,  G01S9/02 ,  G01V1/22

CPC分类号： G01V1/3808 ,  G01V1/005

摘要： An offshore reflection seismic prospection method is provided including a vibratory signal coded in accordance with a pseudo-random code.Correlation of the signals received by the seismic sensors by means of the cycle of the coded signal transmitted allows seismic plots to be obtained similar to what a pulsed source would provide firing at time intervals equal to the duration of the cycle of the coded signal. Correlation with time shifted cycles reduces the distance between plots recorded on the same sensor. The transmissions coming from two or more vibrators, transmitting the same coded signal with shifted cycles, may be separated by correlation with one of the cycles used.

摘要翻译： 提供一种海上反射地震勘探方法，包括根据伪随机码编码的振动信号。 通过传输的编码信号的周期，由地震传感器接收到的信号的相关性允许获得类似于脉冲源将在等于编码信号的周期的持续时间的时间间隔提供点火的地震图。 与时移周期的相关性减少了记录在同一传感器上的曲线之间的距离。 来自两个或更多个振动器的传输相同编码信号的传输可以通过与所使用的循环之一相关来分离。

公开(公告)号：US4479053A

公开(公告)日：1984-10-23

申请号：US242797

申请日：1981-03-11

申请人： Alan R. Johnston

发明人： Alan R. Johnston

IPC分类号： B60Q1/52 ,  G01S17/02 ,  G01S17/87 ,  G01S17/93 ,  G08B13/183 ,  G08B13/187 ,  G01S9/02

CPC分类号： G01S17/936 ,  B60Q9/008 ,  G01S17/026 ,  G01S17/87 ,  G08B13/183 ,  G08B13/187 ,  G01S7/4814

摘要： An optical proximity sensor for optically detecting an object within a predetermined detection volume. More specifically, an optical proximity sensor is disclosed having an illuminator assembly including an illuminator lens (55) and a plurality of light-emitting diodes (53) located at first predetermined positions along the focal plane (54) of the illuminator lens (55). A detector assembly including a detector lens (65) and a plurality of photodiodes (60) located at second predetermined positions along the focal plane of the detector lens (65) is also provided. The two lenses are spaced apart a predetermined distance in accordance with the configuration of the light-emitting diodes (53) and the photodiodes (60) in order to define a predetermined detection volume. Each light-emitting diode has a corresponding photodiode, and their relative positions on their respective focal planes determine the detection volume defined by their overlapping fields of view. Thus by correctly positioning one light-emitting diode/photodiode pair with respect to each other, all the other pairs will be correctly positioned due to their predetermined locations on their respective focal planes. Additionally, a combination of optical proximity sensors, according to the invention, is disclosed wherein the sensors can be used in conjunction with a vehicle to provide a safety system for warning an operator when an object is within a volume defined by the proximity sensor combination.

摘要翻译： 一种用于在预定检测体积内光学检测物体的光学接近传感器。 更具体地，公开了一种光学接近传感器，其具有照明器组件，该照明器组件包括位于沿着照明器透镜（55）的焦平面（54）的第一预定位置处的照明器透镜（55）和多个发光二极管（53） 。 还提供了包括检测器透镜（65）和位于沿着检测器透镜（65）的焦平面的第二预定位置的多个光电二极管（60）的检测器组件。 根据发光二极管（53）和光电二极管（60）的配置，两个透镜间隔预定距离，以便限定预定的检测体积。 每个发光二极管具有对应的光电二极管，并且它们在它们各自的焦平面上的相对位置确定由其重叠视野限定的检测体积。 因此，通过相对于彼此正确地定位一个发光二极管/光电二极管对，由于其各自的焦平面上的预定位置，所有其它对将被正确定位。 此外，公开了根据本发明的光学接近传感器的组合，其中传感器可以与车辆一起使用，以提供安全系统，用于在物体在由接近传感器组合限定的体积内时警告操作者。

公开(公告)号：US4219812A

公开(公告)日：1980-08-26

申请号：US973356

申请日：1978-12-26

申请人： Otto E. Rittenbach

发明人： Otto E. Rittenbach

IPC分类号： G01S13/64 ,  G01S9/02

CPC分类号： G01S13/64

摘要： A range-gated radar system which includes a phase modulator that modulatesn r.f. generator with a signal which may be binary coded. In a preferred embodiment, the binary signal is a periodic signal of 2.sup.N -1 bits per period. Starting at some arbitrary point in the sequence, K contiguous bits are transmitted then M contiguous bits are passed over, then K more bits are transmitted, and so on. The quantities M+K and 2.sup.N -1 have no primary factors in common. The radar system may be a doppler radar system using balanced digital processing which involves separating the upper and lower sideband components of modulation that exist in the return radar signal as a result of the motion of scatterers and subtracting them.

摘要翻译： 范围门控雷达系统，其包括调制r.f.的相位调制器。 具有可以被二进制编码的信号的发生器。 在优选实施例中，二进制信号是每周期2N-1位周期信号。 从序列中的某个任意点开始，发送K个连续的比特，然后传递M个连续的比特，然后发送K个更多的比特，依此类推。 数量M + K和2N-1没有主要的因素。 雷达系统可以是使用平衡数字处理的多普勒雷达系统，其涉及由于散射体的运动而将返回雷达信号中存在的调制的上和下边带分量分离并减去它们。

公开(公告)号：US4217580A

公开(公告)日：1980-08-12

申请号：US707915

申请日：1976-07-22

申请人： Oscar Lowenschuss

发明人： Oscar Lowenschuss

IPC分类号： G01S7/02 ,  G01S7/38 ,  G01S9/02

CPC分类号： G01S7/021 ,  G01S7/38

摘要： An electronic countermeasure system wherein signal processing apparatus is included to enable only a predetermined number of digital words associated with one of a plurality of radio frequency energy sources to pass to a general purpose digital computer. Also, such signal processing apparatus modifies the digital word passed to such digital computer to simplify the processing required by such digital computer.

摘要翻译： 一种电子对策系统，其中包括信号处理装置以使得仅能够将与多个射频能量源之一相关联的预定数量的数字字传递到通用数字计算机。 此外，这种信号处理装置修改传递给这种数字计算机的数字字以简化这种数字计算机所需的处理。

公开(公告)号：US4205314A

公开(公告)日：1980-05-27

申请号：US862005

申请日：1977-12-19

申请人： Raymond Strauch

发明人： Raymond Strauch

IPC分类号： G01S13/34 ,  G01S13/50 ,  G01S13/58 ,  G01S13/62 ,  G01S9/44 ,  G01S9/02 ,  G01S9/23

CPC分类号： G01S13/586

摘要： A radio range measuring apparatus having a controlled modulation slope in order to keep the beat frequency between the transmitted signal and the received signal constant. The apparatus also measures the speed at which a mobile target approaches or recedes by means of a generator of a fixed frequency which, after frequency division, maintains the duration between the start of two consecutive sawtooth modulation signals fixed. A particular spectral line of the beat signal is demodulated by this fixed frequency via a mixer whose output is filtered by a passband filter. The signal at the output of the filter has a frequency which is equal to the Doppler frequency, proportional to the speed.

摘要翻译： 具有受控调制斜率的无线电测距装置，以便保持传输信号和接收信号之间的拍频恒定。 该装置还测量移动目标通过固定频率的发生器接近或后退的速度，其在分频之后维持固定的两个连续的锯齿波调制信号的开始之间的持续时间。 拍频信号的特定频谱线通过混频器由该固定频率进行解调，其混频器的输出由通带滤波器滤波。 滤波器输出端的信号具有与速度成比例的多普勒频率的频率。

公开(公告)号：US4179694A

公开(公告)日：1979-12-18

申请号：US862186

申请日：1977-12-19

申请人： Christopher J. Alder

发明人： Christopher J. Alder

IPC分类号： G01S7/28 ,  G01S9/02

CPC分类号： G01S7/28

摘要： An AFC system for a radar comprising means for changing in one sense a control voltage fed to a voltage controlled local oscillator forming part of the radar receiver when a predetermined number of cycles of a difference frequency between a local oscillator and a transmitted radar frequency obtain during a predetermined period until less than the predetermined number of cycles obtain whereupon the voltage is changed in the opposite sense whereby the frequency of the local oscillator is automatically controlled.

摘要翻译： 一种用于雷达的AFC系统，包括用于在本地振荡器和发射的雷达频率之间的预定数量的不同频率的周期获得期间在一个感测中改变馈送到形成雷达接收机的一部分的电压控制本地振荡器的装置 直到小于预定数量的循环，从而在相反的方向改变电压，从而本地振荡器的频率被自动控制。

公开(公告)号：US4170007A

公开(公告)日：1979-10-02

申请号：US871067

申请日：1978-01-20

申请人： Harry Goldie

发明人： Harry Goldie

IPC分类号： G01S13/24 ,  G01S9/02

CPC分类号： G01S13/24

摘要： Frequency agility may be added to fire control radars by replacing the conventional receiver-protector/stationary-filter combination located between the duplexing circulator and the receiver input with a passive high power ferrite limiter and YIG tracking filter combination.

公开(公告)号：US4167736A

公开(公告)日：1979-09-11

申请号：US786568

申请日：1977-04-11

申请人： Hugh F. D. Tomlinson

发明人： Hugh F. D. Tomlinson

IPC分类号： G01F1/66 ,  G01P5/24 ,  G01P13/00 ,  G01S13/58 ,  G01S9/02 ,  H01Q1/04

CPC分类号： G01P13/0006 ,  G01F1/663 ,  G01P5/241 ,  G01S13/583

摘要： A dielectric aerial is disposed in contact with a dielectric liquid, and projects microwave radiation thereinto. The reflected radiation is received by the aerial, and the flow rate of the liquid given by the Doppler frequency shift between the projected and the reflected radiation. A control circuit is arranged to vary the flow rate in response to the Doppler signal.

摘要翻译： 电介质天线设置成与电介质液体接触，并且向其中投射微波辐射。 反射辐射由天线接收，并且由投影和反射辐射之间的多普勒频率给出的液体的流速偏移。 控制电路被布置成响应于多普勒信号来改变流量。

公开(公告)号：US4163972A

公开(公告)日：1979-08-07

申请号：US867434

申请日：1978-01-06

申请人： Viktor J. Lapy ,  Boris P. Chernov ,  Evgeny B. Georgizon ,  Anatoly A. Koshevoi ,  Gerald I. Yavorsky ,  Valentin I. Glaziev ,  Boris S. Rivkin ,  Andrei A. Yakushenkov ,  Sergei F. Kurochkin

发明人： Viktor J. Lapy ,  Boris P. Chernov ,  Evgeny B. Georgizon ,  Anatoly A. Koshevoi ,  Gerald I. Yavorsky ,  Valentin I. Glaziev ,  Boris S. Rivkin ,  Andrei A. Yakushenkov ,  Sergei F. Kurochkin

IPC分类号： G01S7/292 ,  G01S7/34 ,  G01S13/70 ,  G01S13/93 ,  G05D1/02 ,  G01S9/02

CPC分类号： G01S7/34 ,  G01S13/70 ,  G01S13/9307 ,  G01S7/2922 ,  G01S7/2927 ,  G05D1/0206

摘要： An automatic shipboard collision avoidance system comprises radar; a situation indicator connected to the radar receiver; a computer, which extracts target echoes from clutter and determines the coordinates and motion parameters of targets; an interface through which the computer is connected to the situation indicator; a target tracking gate unit connected via the interface to the computer and having a count pulse generator, a current range counter, range comparison circuits, a gate generator and a signal-half gate generator; a video signal encoder connected to the radar and, via said interface, to said computer and having a threshold circuit, a quantizer, a selector and a buffer storage. A control signal unit generates control signals to control the gain of the radar and sign characters of the count pulses and is connected through the interface to the computer. Usually, noise would be a problem in rough seas or in the presence of intense hydrometeors. By controlling the gain of the radar, different time distributions and different amplitudes of the unwanted echoes and the target echoes are taken into consideration. Thus, this system can insure increased noise immunity during automatic tracking of targets.

摘要翻译： 自动船上碰撞避免系统包括雷达; 连接到雷达接收器的情况指示器; 一个计算机，从杂波中提取目标回波，并确定目标的坐标和运动参数; 计算机连接到状态指示器的接口; 通过接口连接到计算机并具有计数脉冲发生器，电流范围计数器，范围比较电路，门极发生器和信号半栅极发生器的目标跟踪门单元; 连接到雷达并通过所述接口连接到所述计算机并具有阈值电路，量化器，选择器和缓冲存储器的视频信号编码器。 控制信号单元产生控制信号以控制雷达的增益和计数脉冲的符号字符，并通过接口连接到计算机。 通常，噪音在海面粗暴或存在强烈的水力气体时会成为问题。 通过控制雷达的增益，考虑了不需要的回波和目标回波的不同时间分布和不同幅度。 因此，该系统可以在自动跟踪目标过程中确保提高噪声抗扰度。

公开(公告)号：US4121209A

公开(公告)日：1978-10-17

申请号：US843905

申请日：1977-10-20

申请人： Tomos L. ap Rhys

发明人： Tomos L. ap Rhys

IPC分类号： G01S13/524 ,  G01S9/42 ,  G01S9/02

CPC分类号： G01S13/5242

摘要： A displaced-phase-center antenna technique which compensates accurately forhe motion of an airborne radar system in both the boresight direction of the antenna and in the direction normal to the boresight. An antenna system comprising a broadside array of endfire arrays forms four receive beams which are displaced from each other in both the boresight direction and in the direction normal to the boresight. These four beams are used to produce signals which correspond to signals from two receive beams with phase centers having a separation equal in magnitude and direction to the aircraft's motion during the interpulse period. A signal scattered from a fixed object on a first transmitted pulse and received in one of the two receive beams will have the same phase characteristic as a signal scattered from the same fixed object on a subsequent pulse and received in the other receive beam. Upon proper delay of the first received signal, the returns from the fixed object may be cancelled.

摘要翻译： 一种位移相位中心天线技术，可以准确地补偿机载雷达系统在天线的视线方向和垂直于视轴的方向上的运动。 包括端面阵列的端射阵列的天线系统形成四个接收光束，它们在视轴方向和垂直于视轴的方向上彼此偏移。 这四个光束用于产生对应于来自两个接收光束的信号的信号，其中相位中心具有在脉冲间期间与飞机运动的幅度和方向相等的间隔。 在第一发射脉冲上散射的并在两个接收波束之一中接收的信号的信号将具有与在后续脉冲上从同一固定物体散射并在另一个接收波束中接收的信号相同的相位特性。 在第一接收信号的适当延迟时，可以取消来自固定对象的返回。