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    • 1. 发明授权
    • Radar signal processor utilizing a multi-channel optical correlator
    • 利用多通道光相关器的雷达信号处理器
    • US4071907A
    • 1978-01-31
    • US731471
    • 1976-10-12
    • David Paul Casasent
    • David Paul Casasent
    • G01S7/292G01S13/90G06E3/00G06K9/74G06G9/00G01S7/16
    • G06K9/745G01S13/9005G01S7/292G06E3/003
    • A real-time radar processor utilizing a coherent optical system for provig target fine range and Doppler/azimuth angle data with increased signal-to-noise and signal-to-clutter ratios. Radar signals detected by a linear phased array or successive echo signals detected by the receiver are arranged in a 2-D input format for parallel processing in a multi-channel 1-D optical correlator. Target range and azimuth angle reference data may be stored in a matched spatial filter hologram or recorded in a 2-D format similar to that of the detected radar signals according to which of three different correlation configurations are employed in the optical system. The coordinates of the correlation peak in the output plane of the correlator are proportional to the target's fine range and Doppler/azimuth angle, depending upon the type of radar signals being processed.
    • 利用相干光学系统的实时雷达处理器,用于提供具有增加的信噪比和信噪比的目标精细范围和多普勒/方位角数据。 由线性相控阵列检测到的雷达信号或由接收机检测到的连续回波信号以2-D输入格式排列,用于多通道1-D光学相关器中的并行处理。 目标范围和方位角参考数据可以存储在匹配的空间滤波全息图中,或者根据根据在光学系统中采用三种不同的相关配置中哪一种的检测雷达信号类似的二维格式来记录。 相关器的输出平面中的相关峰的坐标与目标的精细范围和多普勒/方位角成正比,这取决于正在处理的雷达信号的类型。
    • 4. 发明授权
    • Range cell formation processing
    • 范围细胞形成处理
    • US5640165A
    • 1997-06-17
    • US482336
    • 1995-06-07
    • Leo H. HuiMichael W. Autry
    • Leo H. HuiMichael W. Autry
    • G01S7/18G01S7/295G01S7/16
    • G01S7/295G01S7/18
    • A range cell formation process that are used to enhance the quality of an image following a perspective transformation from range-azimuth coordinates (B-scan) into elevation-azimuth coordinates (C-scan). The present range cell formation process eliminate situations where there are missing data points at the far range, and large areas that have the same data point at the near range. The range cell formation process evaluates the data content in range cells on a case by case basis using a prioritized system to determine what is to be displayed so that a high level of image contrast is maintained. In the far range, range cell data that are in between range points defined by every two adjacent elevation points are processed and a priority system is used to determine the best intensity value to use for the elevation points. The priority system is such that bright objects have the highest priority, followed by dark objects, and then followed by an average background level. Range cells are processed to determine which priority is met, and then the appropriate intensity is used. If a bright object is detected in the range cells, then the maximum intensity of the range cells is used. If a dark object is detected, then the lowest intensity of the range cells is used. Otherwise, the average intensity of the range cells is used. In the near range, no enhancements are made to reduce the size of large areas, but the size of bright objects is reduced, thereby providing a sense of increased focus in the near range.
    • 用于提高从范围 - 方位坐标(B扫描)到仰角 - 方位坐标(C-scan)的透视变换后的图像质量的距离单元格形成处理。 目前的距离单元格形成过程消除了在远距离缺少数据点的情况,并且具有相同数据点的大面积在近距离范围内。 范围单元格形成过程使用优先系统来评估范围单元格中的数据内容,以确定要显示的内容,从而保持高水平的图像对比度。 在远距离范围内,处理由两个相邻高程点定义的范围点之间的范围单元格数据,并使用优先级系统来确定用于高程点的最佳强度值。 优先权系统是明亮的对象具有最高优先级,其次是黑色对象,然后是平均背景级别。 处理范围单元以确定哪个优先级满足,然后使用适当的强度。 如果在范围单元格中检测到亮物体,则使用范围单元的最大强度。 如果检测到暗物体,则使用范围单元的最低强度。 否则,使用范围单元的平均强度。 在近距离范围内,没有进一步减小大面积的尺寸,但是明亮物体的尺寸减小了,从而提供了近距离增加的焦点感。
    • 5. 发明授权
    • Anti-jamming radar receiver
    • 防雷射雷达接收机
    • US3859661A
    • 1975-01-07
    • US33298063
    • 1963-12-23
    • US AIR FORCE
    • RUVIN ABRAHAM EFOWLER CHARLES A
    • G01S7/16G01S7/36
    • G01S7/16G01S7/36
    • 2. In an anti-jamming radar having an antenna propagating a pair of beams at the same elevation angle in two closely spaced azimuth directions and receiving first and second incoming signals to be added and subtracted to provide a separate sum and difference signals, a radar receiver and its associated display oscilloscope comprising a mixer receiving said sum and difference signal for mixing and providing three output signals, a first detector receiving a first and second input signal by way of said mixer and providing an output signal that is representative of the ratio of said sum and difference signal, a second detector receiving said third output signal from said mixer and providing a normal video output signal, a wide-band filter also receiving said third output signal, a narrow band filter receiving the output signal from said wide-band filter by way of a wide-band limiter, a third detector connected to said narrow band filter and also operating to provide a video output signal, an oscilloscope having cathode, control grid and a pair of vertical and horizontal deflection plates, said video output signals from said second and third detectors being applied to said control grid, said vertical plates receiving a range sweep voltage, a summing amplifier having two inputs, one of said two inputs receiving the output signal from said first detector, the other of said two inputs receiving a d.c. voltage representative of the azimuth angle of said antenna, and a push-pull amplifier receiving the resultant signal from said summing amplifier and operating to provide a pair of signals to said pair of horizontal plates.
    • 2.一种抗干扰雷达,其具有在两个紧密间隔的方位角方向上以相同仰角传播一对波束的天线,并且接收要加和减去的第一和第二输入信号以提供单独的和差信号,雷达 接收机及其相关联的显示示波器,其包括接收所述和差和信号以混合并提供三个输出信号的混合器,第一检测器通过所述混频器接收第一和第二输入信号,并提供代表 所述和差信号,第二检测器从所述混频器接收所述第三输出信号并提供正常视频输出信号,宽带滤波器也接收所述第三输出信号;窄带滤波器,从所述宽带接收输出信号 通过宽带限幅器进行滤波,连接到所述窄带滤波器的第三检测器,还用于提供视频输出信号, 具有阴极,控制栅格和一对垂直和水平偏转板的示波器,来自所述第二和第三检测器的所述视频输出信号被施加到所述控制栅极,所述垂直板接收范围扫描电压,具有两个输入的加法放大器, 所述两个输入中的一个接收来自所述第一检测器的输出信号,所述两个输入端中的另一个接收直流 代表所述天线的方位角的电压,以及推挽放大器,从所述求和放大器接收所得到的信号,并操作以向所述一对水平板提供一对信号。
    • 6. 发明授权
    • Conversion of plug-in oscilloscope to radar B-scope
    • 将插入式示波器转换为雷达B型
    • US3904926A
    • 1975-09-09
    • US21838372
    • 1972-01-17
    • US NAVY
    • BROWN BRUCE J
    • G01R13/22G01S7/16H01J29/78
    • G01S7/16G01R13/22
    • Method and means for converting a commercial-plug-in oscilloscope to a radar B-scope display unit. Firstly, the CRT electron-beam scan is changed from a horizontal to a vertical sweep by placing the time-base generator in the vertical side and the amplifier in the horizontal side. The retrace blanking signal is also changed from the horizontal to the vertical side via a switch. Secondly, the display is converted to intensity modulation through a wide-bandwidth, high-gain amplifier. Thirdly, the standard CRT is replaced by one having a longpersistence screen. Fourthly, a range-mark pulse generator is incorporated in the unit.
    • 将商业插入式示波器转换为雷达B型显示单元的方法和装置。 首先,通过将时基发生器放置在垂直方向,放大器在水平方向上将CRT电子束扫描从水平扫描改变为垂直扫描。 回扫消隐信号也通过开关从水平方向变化到垂直方向。 其次,通过宽带,高增益放大器将显示转换为强度调制。 第三,标准CRT被具有长持续屏幕的CRT替代。 第四,在该单元中结合有范围标记脉冲发生器。
    • 7. 发明授权
    • Independent aircraft landing monitor system
    • 独立的飞机着陆监控系统
    • US3716860A
    • 1973-02-13
    • US3716860D
    • 1970-07-15
    • TEXAS INSTRUMENTS INC
    • BECHTEL B
    • G01S1/02G01S7/06G01S7/20G01S7/282G01S13/91G01S19/15H01Q3/06H01Q13/00G01S7/12G01S7/16G01S9/06
    • H01Q13/00G01S1/02G01S7/06G01S7/20G01S7/282G01S13/10G01S13/913H01Q3/06
    • An aircraft landing monitor which is independent of ground-based guidance systems and which includes an antenna comprising an elongated housing pivotally mounted about a vertical axis for horizontal movement in the forward portion of an aircraft. The housing supports an edge-slotted waveguide array which is mounted in an elongated horn reflector to thereby direct an antenna radiation pattern forward of the aircraft which is narrower in the azimuth than in the elevation plane. A motor oscillates the antenna housing about the vertical axis to sweep over an azimuth angle sufficient for airport runway detection during a glideslope approach to the runway by the aircraft. Radar transmitter and receiver circuits transmit and receive pulse radar signals via the antenna for radar detection of the runway. A radarscope mounted in the cockpit control panel is responsive to the radar transmitter and receiver for visually displaying an approaching airport runway in real-world linear perspective.
    • 飞机着陆监视器,其独立于地面导向系统,并且其包括天线,该天线包括围绕垂直轴线可枢转地安装的细长壳体,用于在飞行器的前部中水平运动。 壳体支撑边缘槽波导阵列,其安装在细长的喇叭反射器中,从而将方位角较前方的飞机前方的天线辐射方向指示为高于仰角平面。 电机使天线壳体围绕垂直轴线摆动,以在飞行器对跑道的滑行接近期间扫过足够的机场跑道检测的方位角。 雷达发射机和接收机电路通过天线发射和接收脉冲雷达信号,用于跑道的雷达检测。 安装在驾驶舱控制面板中的雷达反射镜响应于雷达发射器和接收器,用于在现实世界线性视角中可视地显示接近的机场跑道。