知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

332 records (took 0.021 seconds)

    Moving object detection system and method
    2.
    发明授权
    Moving object detection system and method 有权

    公开(公告)号：US11435469B2

    公开(公告)日：2022-09-06

    申请号：US16469902

    申请日：2017-12-14

    Applicant: WRT LAB CO., LTD.

    Inventor： Sung Ho Cho ,  Jeong Woo Choi

    IPC: G01S13/02 ,  G01S13/87 ,  G01S13/70

    Abstract: Disclosed is a moving object detection system and method. The moving object detection system includes an input unit receiving the sensed signals from two or more radar devices, a distance information computation unit computing distance information of the objects from the received signals, a grouping unit randomly selecting one signal to generate multiple signal groups, and generating the signal groups selected among the generated multiple signal groups as one signal group combination, a calculation unit calculating cross-correlation values for all the signal groups in the same signal group combination and adding up the calculated cross-correlation values, a combination selection unit selecting the signal group combination in which a sum of the cross-correlation values is a maximum, and a position computation unit computing a position of each object by matching the signal groups in the selected signal group combination to the objects.

    Phase shifter
    4.
    发明授权
    Phase shifter 有权

    公开(公告)号：US10230378B2

    公开(公告)日：2019-03-12

    申请号：US16021143

    申请日：2018-06-28

    Applicant: NXP B.V.

    Inventor： Stephane Thuries ,  Cristian Pavao Moreira ,  Gilles Montoriol

    IPC: H03L7/08 ,  H03L7/081 ,  H03M1/66 ,  G01S13/28 ,  G01S13/70 ,  H04B1/44

    Abstract: The disclosure relates to a phase shifter having a first mode of operation and a second mode of operation, the phase shifter comprising a mixer stage configured to mix an oscillator signal with an analog signal to provide a phase shifted signal, switching circuitry and a controller arranged to provide the analog signal to the mixer stage as a voltage in the first mode of operation and as a current in the second mode of operation.

    TARGET-TRACKING RADAR AND METHOD FOR RESPONDING TO FLUCTUATIONS IN TARGET SNR
    6.
    发明申请
    TARGET-TRACKING RADAR AND METHOD FOR RESPONDING TO FLUCTUATIONS IN TARGET SNR 有权
    目标跟踪雷达和方法应对目标信噪比的波动

    公开(公告)号：US20130328714A1

    公开(公告)日：2013-12-12

    申请号：US13075299

    申请日：2011-03-30

    Applicant: Damon C. Turner ,  Brett J. Young

    Inventor： Damon C. Turner ,  Brett J. Young

    IPC: G01S13/68 ,  G01S13/70 ,  G01S13/66

    CPC classification number: G01S13/72 ,  G01S13/4427 ,  G01S13/66 ,  G01S13/685 ,  G01S13/70

    Abstract: Embodiments of a target-tracking radar and methods for responding to fluctuations in target SNR are generally described herein. In some embodiments, the target-tracking radar may be configured to determine whether a target can be considered a point target based on the SNR of received signals and off-boresight error estimates. Measurement-variance estimates generated from the SNR are provided to a target-state estimator when the target is determined to be a point target. When the target is determined not to be a point target, the measurement-variance estimates generated from SNR are not used by the target-state estimator. This may allow targets to be engaged at increased range.

    Abstract translation: 目标跟踪雷达的实施例和用于响应目标SNR的波动的方法在这里一般地被描述。 在一些实施例中，目标跟踪雷达可以被配置为基于接收信号的SNR和离开视轴误差估计来确定目标是否可以被认为是点目标。 当目标被确定为点目标时，从SNR产生的测量方差估计被提供给目标状态估计器。 当目标被确定为不是点目标时，由SNR产生的测量方差估计不被目标状态估计器使用。 这可能允许目标在更大的范围内进行。

    Radar system
    7.
    发明授权
    Radar system 失效
    雷达系统

    公开(公告)号：US5606324A

    公开(公告)日：1997-02-25

    申请号：US569374

    申请日：1995-12-07

    Applicant: Walter S. Justice ,  David A. Marquis ,  Ronald A. Wagner

    Inventor： Walter S. Justice ,  David A. Marquis ,  Ronald A. Wagner

    IPC: G01S13/02 ,  G01S7/288 ,  G01S13/18 ,  G01S13/24 ,  G01S13/26 ,  G01S13/44 ,  G01S13/53 ,  G01S13/64 ,  G01S13/66 ,  G01S13/70 ,  G01S13/72

    CPC classification number: G01S13/53 ,  G01S13/24 ,  G01S13/66 ,  G01S13/18 ,  G01S13/449 ,  G01S13/64 ,  G01S13/70 ,  G01S13/726 ,  G01S2007/2883

    Abstract: A radar system having a transmitter for transmitting a series of radio frequency (RF) pulses with sequential, incrementally changing carrier frequencies. A receiver receives energy from multiple scattering points of an object reflecting such transmitted RF pulses. The received energy from each one of such scattering points includes a series of radio frequency (RF) pulses corresponding to the transmitted pulses delayed in time, .tau., from the transmitted pulses an amount proportional to the range to such scattering point and shifted in frequency from the carrier frequency an amount proportional to the velocity of such scattering point. The receiver includes a heterodyning section, responsive to a range tracking error signal, .epsilon..sub.R, and a velocity tracking error signal, .DELTA..sub.VEL, for producing a series of pulsed signals for each one of the scattering points. Each one of the pulsed signals for any given scatterer sequentially changes in phase, .phi., at a rate, .DELTA..phi./.DELTA.T, related to the range to the scattering point producing such one of the pulsed signal series. A processor, responsive to each of the series of pulsed signals produced by the heterodyning section, unambiguously determines from the frequency spectrum thereof the range tracking error signal, .epsilon..sub.R, and velocity tracking error signal, .DELTA..sub.VEL, for each of the scattering points as well as the range centroid.

    Abstract translation: 一种具有发射机的雷达系统，用于发射具有顺序的递增变化的载波频率的一系列射频（RF）脉冲。 接收器从反射这种发送的RF脉冲的物体的多个散射点接收能量。 从这些散射点的每一个接收的能量包括一系列射频（RF）脉冲，对应于从时间上延迟的发射脉冲，τ，从发射脉冲开始，与这样的散射点的范围成比例并且频率偏移 载波频率与这种散射点的速度成比例的量。 接收机包括响应于范围跟踪误差信号εR和速度跟踪误差信号DELTA VEL的外差部分，用于为每个散射点产生一系列脉冲信号。 对于任何给定的散射体的每个脉冲信号以与产生这样的脉冲信号序列的散射点的范围有关的速率DELTA phi / DELTA T的相位顺序地改变。 响应于由外差部分产生的一系列脉冲信号中的每一个的处理器从其频谱中明确地确定每个散射点的范围跟踪误差信号，εR和速度跟踪误差信号DELTA VEL，如 以及范围重心。

    Manual probe acquisition system
    8.
    发明授权
    Manual probe acquisition system 失效
    手动探头采集系统

    公开(公告)号：US5574460A

    公开(公告)日：1996-11-12

    申请号：US431490

    申请日：1965-02-03

    Applicant: John Di Perry

    Inventor： John Di Perry

    IPC: G01S7/22 ,  G01S13/18 ,  G01S13/70 ,  G01S13/72 ,  G01S7/10

    CPC classification number: G01S13/70 ,  G01S13/18 ,  G01S7/22

    Abstract: A probe acquisition and display system is disclosed featuring one simple trol for acquiring, tracking, and instantaneously locking for a missile control radar. The system provides for fast initial target acquisition and re-acquisition in the presence of intentional or unintentional interference. A dual trace oscilloscope display is provided with radar tracking (range) gate and a probe is used to touch a target on the display by a radar operator.

    Abstract translation: 公开了一种探头采集和显示系统，其特征在于一种用于获取，跟踪和瞬时锁定导弹控制雷达的简单控制。 该系统在有意或无意干扰的情况下提供快速初始目标获取和重新获取。 雷达跟踪（量程）门提供双迹示波器显示屏，探头用于通过雷达操作员触摸显示屏上的目标。

    Horizontal miss distance filter system for suppressing false resolution alerts
    9.
    发明授权
    Horizontal miss distance filter system for suppressing false resolution alerts 失效
    用于抑制虚假分辨率警报的水平误差距离滤波系统

    公开(公告)号：US5566074A

    公开(公告)日：1996-10-15

    申请号：US512011

    申请日：1995-08-07

    Applicant: Jonathan B. Hammer

    Inventor： Jonathan B. Hammer

    IPC: G08G5/04 ,  G01S13/66 ,  G01S13/70 ,  G01S13/74 ,  G01S13/93 ,  G05D1/08 ,  G06F165/00

    CPC classification number: G05D1/0808 ,  G01S13/9303 ,  G01S13/70 ,  G01S13/74

    Abstract: A horizontal miss distance filter system (220) is provided for inhibiting resolution alert messages from an air traffic alert and collision avoidance system (210) to a pilot's display (230). The horizontal miss distance filter employs a parabolic range tracker (10) to derive a range acceleration estimate (11) utilized to discriminate intruder aircraft (110) having non-zero horizontal miss distances. The horizontal miss distance calculated from the range data provided by the parabolic range tracker is compared with a bearing based horizontal miss distance provided by a bearing based tracker (22). The smaller of the two calculated horizontal miss distances defines a projected horizontal miss distance which is compared with a threshold value. Any resolution alert for intruder aircraft whose projected horizontal miss distance is greater than the threshold will be inhibited unless it is determined that the encounter involves a maneuver of one of the aircraft. As many as five maneuver detectors (50, 52, 56, 58 and 64) may be employed to assess whether the encounter involves a maneuver. If any of the maneuver detectors establish the occurrence of a maneuver, then a resolution alert provided from the TCAS system (210) will not be inhibited.

    Abstract translation: 提供了一种用于禁止来自空中交通警报和防碰撞系统（210）到飞行员显示器（230）的分辨率警报消息的水平未知距离过滤系统（220）。 水平遗漏距离滤波器采用抛物面距离跟踪器（10）来导出用于区分具有非零水平遗漏距离的入侵飞行器（110）的距离加速度估计（11）。 将由抛物面量程跟踪器提供的范围数据计算出的水平遗漏距离与由基于轴承的跟踪器（22）提供的基于轴承的水平丢失距离进行比较。 两个计算的水平缺口距离中较小的一个定义了与阈值进行比较的投影水平未知距离。 对于投影水平未知距离大于阈值的入侵飞机的任何分辨率警报将被禁止，除非确定遇到涉及飞机之一的机动。 可以使用多达五个机动探测器（50,52,56,58和64）来评估遇难是否涉及机动。 如果任何一个机动探测器确定了机动的发生，则不会阻止从TCAS系统（210）提供的分辨率警报。

    Tracking filter for radio altimeter
    10.
    发明授权
    Tracking filter for radio altimeter 失效
    无线电高度计跟踪滤波器

    公开(公告)号：US4427981A

    公开(公告)日：1984-01-24

    申请号：US306038

    申请日：1981-09-28

    Applicant: Constantinos S. Kyriakos

    Inventor： Constantinos S. Kyriakos

    IPC: H03H21/00 ,  G01S13/34 ,  G01S13/70 ,  G01S13/88 ,  G01S9/04

    CPC classification number: G01S13/345 ,  G01S13/882

    Abstract: A filter for tracking the ground signal return in an FM/CW radio altimeter. The filter has a variable band pass frequency response which is adjusted as a function of the altitude measured by the altimeter. The control means of the filter respond to altitude measurements in digital format.

    Abstract translation: 用于跟踪FM / CW无线电高度计中的接地信号返回的滤波器。 滤波器具有可变带通频率响应，该频率响应作为由高度计测量的高度的函数进行调整。 过滤器的控制装置以数字格式响应高度测量。

Patent Agency Ranking