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    • 1. 发明申请
    • DEVICE FOR CLUTTER-RESISTANT TARGET DETECTION
    • 用于防止目标检测的装置
    • US20140240166A1
    • 2014-08-28
    • US14235659
    • 2012-07-12
    • Jean-Marc CortambertJacques DulostDominique MedynskiSerge Roques
    • Jean-Marc CortambertJacques DulostDominique MedynskiSerge Roques
    • G01S13/44
    • G01S13/44G01S13/4418G01S13/4463G01S13/4472G01S13/48H01Q3/2605
    • The invention relates to a device for passively or actively detecting a target which scatters a useful signal and which is immersed in an observed area comprising elements that are likely to generate clutter echoes forming a non-useful signal, the useful signal having a coherent scattering lobe that is greater than that of the non-useful signal for a given wavelength and given direction, said device including means for receiving the signal scattered by the target, said receiving means including: at a given moment t, at least two separate reception portions having the same polarization, each portion including at least one receiver and one phase center; and a processing means enabling the mutual correlation between at least two received signals, or between at least two signals constructed from signals received at a moment t, each of said received signals being received by a receiver of one of said at least two separate reception portions, characterized in that the phase centers of said at least two reception portions are arranged such that the both of the latter are located in the coherent scattering lobe of a possible useful signal and such that both of the latter are not located in the coherent scattering lobe of the non-useful signal, so as to enable said processing means to detect a possible useful signal present of the non-useful signal, the minimum required distance between said phase centers being that which is required for observing a first decrease in the coefficient of correlation of said at least two constructed signals.
    • 本发明涉及一种用于被动地或主动地检测目标的装置,其散射有用的信号并且被浸没在包括可能产生形成非有用信号的杂波回波的元素的观察区域中,该有用信号具有相干散射波瓣 所述装置包括用于接收由所述目标散射的信号的装置,所述接收装置包括:在给定时刻t,至少两个单独的接收部分具有 相同的极化,每个部分包括至少一个接收器和一个相位中心; 以及处理装置,其能够在至少两个接收信号之间或在由时刻t接收的信号构成的至少两个信号之间进行相互关联,每个所述接收信号由所述至少两个分开的接收部分之一的接收机接收 其特征在于,所述至少两个接收部分的相位中心被布置成使得后者的相位中心位于可能有用信号的相干散射波瓣中,并且使得后者不位于相干散射波瓣 为了使所述处理装置能够检测存在无用信号的可能的有用信号,所述相位中心之间的最小所需距离是观察系数的第一次降低所需的距离 所述至少两个构造的信号的相关性。
    • 5. 发明授权
    • Method for improving monopulse processing of aperture segment outputs
    • 改进孔径段输出单脉冲处理的方法
    • US5986605A
    • 1999-11-16
    • US56070
    • 1998-04-06
    • Leslie A. PriebeJerry D. Holmes
    • Leslie A. PriebeJerry D. Holmes
    • G01S3/32G01S13/44G01S5/02
    • G01S3/32G01S13/44G01S13/4418
    • A system and method for estimating azimuth angle, elevation angle and signal detection and which includes an antenna system having a plurality of elements, each element receiving a different concurrent portion of an incoming analog signal having a real and an imaginary portion. A converter is provided for each antenna element for converting each analog signal to digital form. A processor is provide for multiplying the sum of the real parts of the signals from a first group of the elements with the conjugate of the sum of the remainder of the elements to provided an estimated azimuth, elevation of signal detection measurement. In the case of a four element antenna, AzEst=Angle((A+B)*(C+D)Conjugate))=(x.sub.A +iy.sub.A +x.sub.B +iy.sub.B)*(x.sub.C -iy.sub.C +x.sub.D -iy.sub.D), ElEst=Angle((A+D)*(B+C)Conjugate))=(x.sub.A +iy.sub.A +x.sub.D +iy.sub.D)*(x.sub.B -iy.sub.B +x.sub.C -iy.sub.C) and Magnitude ((A+B*(C+D)Conjugate)) or Magnitude ((A+D*(B+C)Conjugate)). When the antenna system includes four antenna quadrants A, B, C and D, false detections due to responses coming from the sidelobe regions are suppressed by subtracting the offset OffsetAz=ScaleFactor*Magnitude(DeltaAz), where the offset is a scale factor to make the numbers come out correctly to provide a synthetic beam response: SyntheticAz=Magnitude((A+B)*(C+D)Conjugate)-OffsetAz the processor further including a comparator for comparing the Synthetic Az to a threshold to determine validity of the signal.
    • 一种用于估计方位角,仰角和信号检测的系统和方法,其包括具有多个元件的天线系统,每个元件接收具有实部和虚部的输入模拟信号的不同部分。 为每个天线元件提供A转换器,用于将每个模拟信号转换为数字形式。 提供一种处理器,用于将来自第一组元件的信号的实部的总和与元素的其余部分的和的共轭相乘以提供估计的方位角,信号检测测量的仰角。 在四元天线的情况下,AzEst = Angle((A + B)*(C + D)共轭))=(xA + iyA + xB + iyB)*(xC-iyC + xD-iyD),ElEst = 角度((A + D)*(B + C)共轭体))=(xA + iyA + xD + iyD)*(xB-iyB + xC-iyC)和幅度((A + B *(C + D) ))或Magnitude((A + D *(B + C)缀合物))。 当天线系统包括四个天线象限A,B,C和D时,通过减去偏移OffsetAz = ScaleFactor * Magnitude(DeltaAz)来抑制由于来自旁瓣区域的响应而导致的错误检测,其中偏移量是使比例因子 数字正确地出现以提供合成波束响应:SyntheticAz =幅度((A + B)*(C + D)共轭)) - 处理器还包括用于将合成Az与阈值进行比较的比较器,以确定 信号。
    • 6. 发明授权
    • Process and amplitude or phase monopulse radar device for locating
flying objects
    • 用于定位飞行物体的过程和幅度或相位单脉冲雷达装置
    • US5784022A
    • 1998-07-21
    • US817703
    • 1997-05-02
    • Hanspeter Kupfer
    • Hanspeter Kupfer
    • G01S13/44G01S13/72
    • G01S13/4418G01S13/4463G01S13/4445G01S13/4454G01S13/726
    • The process and the corresponding phase or amplitude-single pulse radar device are used to locate a first and possibly a second target (TT1, TT2) detected by the radar beam from the direction x1, y1; x2, y2. The extended single-pulse aerial of the radar device has at least three partial aerials for a first measuring axis x (e.g. azimuth) which are arranged in such a way, have such directional characteristics and the signals of which are combined together and weighted in such a way that two mutually linearly independent, purely real or purely imaginary aerial functions which are independent of target displacements perpendicular to the first measuring axis are formed. The function course of these aerial functions F1(x) and F2(x) is measured for the individual case and the functional values dependent upon the target displacement x are stored in the storage unit (MEM). Measurements are found for the targets of the position x1 and x2 detected by the radar beam according to the aerial functions F1 and F2.
    • PCT No.PCT / CH96 / 00124 Sec。 371日期:1997年5月2日 102(e)日期1997年5月2日PCT提交1996年4月9日PCT公布。 公开号WO97 / 22890 日期1997年6月26日该过程和相应的相位或幅度单脉冲雷达装置用于定位由方向x1,y1由雷达波束检测到的第一目标(或TT1,TT2); x2,y2。 雷达装置的扩展单脉冲天线具有至少三个用于以这种方式布置的第一测量轴x(例如方位角)的部分天线,具有这样的方向特性,并且其信号被组合在一起并且以这样的方式加权 形成了与垂直于第一测量轴的目标位移无关的两个相互线性独立的,纯实的或纯假想的空中功能的方式。 对于个别情况测量这些空中功能F1(x)和F2(x)的功能过程,并且取决于目标位移x的功能值被存储在存储单元(MEM)中。 根据天线功能F1和F2,对雷达波束检测到的位置x1和x2的目标进行测量。
    • 8. 发明授权
    • Method and apparatus for the determination of the height of a target
    • 用于确定目标高度的方法和装置
    • US5278564A
    • 1994-01-11
    • US922785
    • 1992-07-31
    • Albert Groenenboom
    • Albert Groenenboom
    • G01S13/42G01S13/44G01S13/72
    • G01S13/4418
    • Radar apparatus for determining the height of a low-elevation target, the target being illuminated by a transmitter (7) and an antenna (3) via a TR-switch (6). Electromagnetic radiation reflected directly by the target and indirectly by the target via the earth surface is received by the antenna (3) and processed in a sum receiver (9, 10, 11), connected via the TR-switch (6) to the antenna (3), into complex sum signals, and in a difference receiver (12, 13, 14), into complex difference signals. A signal processor (15), receiving the complex sum signals and the complex difference signals, is provided with an algorithm which determines the height of the target. The algorithm enables the determination of the target height while the antenna remains directed at the target.
    • 用于确定低仰角目标的高度的雷达装置,所述目标由发射机(7)和天线(3)经由TR开关(6)照射。 由天线直接反射的电磁辐射和经由地球表面间接反射的电磁辐射由天线(3)接收,并经由TR开关(6)连接到天线的和接收器(9,10,11)进行处理 (3)转换为复数和信号,并在差分接收机(12,13,14)中形成复差分信号。 接收复数和信号和复差信号的信号处理器(15)具有确定目标高度的算法。 该算法能够在天线保持指向目标的同时确定目标高度。
    • 9. 发明授权
    • Method and apparatus for tracking targets from direct and multipath
reflected radar signals
    • 用于跟踪来自直接和多径反射雷达信号的目标的方法和装置
    • US5270718A
    • 1993-12-14
    • US933264
    • 1992-08-21
    • Richard DiDomizio
    • Richard DiDomizio
    • G01S13/44G01S13/48G01S13/66
    • G01S13/4418
    • A method and apparatus to determine angles .theta..sub.1 and .theta..sub.2 between paths of two sets of reflected radar waves and a radar boresight utilizes the electrical angles .beta..sub.1 or .beta..sub.2 and two successive radar target observations. One set of radar waves may travel a path from a target and the second set may travel a multipath from the same target. Alternatively, the two sets of radar waves may follow direct paths from two targets. For coherent radar hardware, signals from two halves of an array are processed through a linear coherent receiver, analog-to-digital converter and processing unit with associated memory. The memory contains a database and program which calculates the electrical angles .beta..sub.1 and .beta..sub.2 and angles .theta..sub.1, and .theta..sub.2. For non-coherent radar hardware, mixers, a phase detector and two magnitude detectors are substituted for the linear coherent receiver.
    • 确定两组反射雷达波和雷达远视的路径之间的角度θ1和θ2的方法和装置利用电角度β1或β2和两个连续的雷达目标观测值。 一组雷达波可以从目标行进路径,第二组可以从同一目标行进多路径。 或者,两组雷达波可以沿着两个目标的直接路径。 对于相干雷达硬件,来自阵列的两个半部的信号通过线性相干接收器,模数转换器和具有相关存储器的处理单元进行处理。 存储器包含计算电角度β1和β2以及角度θ1和θ2的数据库和程序。对于非相干雷达硬件,混合器,相位检测器和两个幅度检测器代替线性相干接收器。