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    • 4. 发明申请
    • VIRTUAL NOISE RADAR WAVEFORM FOR REDUCED RADAR DETECTABILITY
    • 用于减少雷达探测性的虚拟噪声雷达波形
    • WO1997045752A1
    • 1997-12-04
    • PCT/US1997009253
    • 1997-05-30
    • ESCO ELECTRONICS CORPORATION
    • ESCO ELECTRONICS CORPORATIONSAUER, Mark, F.KREMER, Larry, R.ZIEGLER, John, A.AGNE, Craig, L.
    • G01S07/495
    • G01S13/222G01S7/282G01S7/285G01S7/35G01S7/36G01S13/32G01S13/44G01S2013/0281
    • Apparatus (10) for generating a radar waveform (W). A noises generator (20) generates a series of pulses in a pseudo-random pattern, and a frequency generator (16) generates a carrier wave having a frequency within a predetermined band of frequencies. The carrier wave is modulated with the pseudo-random pattern of pulses, and the resulting modulated carrier wave passed through both a filter (30) and an attenuator (32) to suppress any discernible feature or signal characteristics of the resulting waveform. The modulated carrier is transmitted by an antenna (42) and a received return signal is processed by a signal processor (100) to obtain pertinent information about a target. The transmitted waveform has no discernible attributes by which the waveform, if processed and analyzed by someone else's radar detector (E) would convey any intelligence as to the presence or source of the transmitted waveform.
    • 用于产生雷达波形(W)的装置(10)。 噪声发生器(20)以伪随机模式产生一系列脉冲,并且频率发生器(16)产生具有预定频带范围内的频率的载波。 载波以脉冲的伪随机模式进行调制,所得到的调制载波通过滤波器(30)和衰减器(32),以抑制所得波形的任何可辨别的特征或信号特性。 调制载波由天线(42)传输,并且接收的返回信号由信号处理器(100)处理以获得关于目标的相关信息。 传输的波形没有明确的属性,通过该属性波形,如果由其他人的雷达检测器(E)进行处理和分析,则将传达关于发送波形的存在或来源的任何智能。
    • 7. 发明申请
    • REMOTE SENSING USING RAYLEIGH SIGNALING
    • 使用RAYLEIGH信号的远程感测
    • WO0186320A3
    • 2002-05-23
    • PCT/US0114429
    • 2001-05-07
    • GREENWICH TECHNOLOGIES ASSOCIA
    • ELAM CARL M
    • G01S13/00G01S13/02G01S13/28G01S13/87G01S13/66
    • G01S13/288G01S13/003G01S2013/0281
    • This invention features an improved technique for search and track surveillance. In this invention, distinct and random (in both space and time) signal beams are simultaneous transmitted from an array of transmitter source elements in a manner to cover all sectors about a source location. In addition, countermeasures against a system according to the invention are difficult because the signal waveforms for each beam are distinct and random, making prediction of any signal waveform for any beam very unlikely. An array of receiver sensor elements is provided to receive signals that are scattered from remote objects and may or may not be co-located with and share the elements of the source array element. The scattered signals are received and processed to yield the direction and range of the remote objects.
    • 本发明的特征在于用于搜索和跟踪监视的改进技术。 在本发明中,不同的和随机的(在空间和时间上都是相同的)信号波束以发射源元件的阵列同时发射,以覆盖关于源位置的所有扇区。 此外,对于根据本发明的系统的对策是困难的,因为每个波束的信号波形是不同的和随机的,使得对于任何波束的任何信号波形的预测非常不可能。 提供接收器传感器元件的阵列以接收从远程对象散射的信号,并且可以或可以不与源阵列元件的元件共同定位并共享它们。 接收和处理散射信号以产生远程物体的方向和范围。
    • 8. 发明申请
    • REMOTE SENSING USING RAYLEIGH SIGNALING
    • 使用RAYLEIGH信号进行远程感测
    • WO01086320A2
    • 2001-11-15
    • PCT/US2001/014429
    • 2001-05-07
    • G01S13/00G01S13/02G01S13/28G01S17/00
    • G01S13/288G01S13/003G01S2013/0281
    • This invention features an improved technique for search and track surveillance. In this invention, distinct and random (in both space and time) signal beams are simultaneous transmitted from an array of transmitter source elements in a manner to cover all sectors about a source location. In addition, countermeasures against a system according to the invention are difficult because the signal waveforms for each beam are distinct and random, making prediction of any signal waveform for any beam very unlikely. An array of receiver sensor elements is provided to receive signals that are scattered from remote objects and may or may not be co-located with and share the elements of the source array element. The scattered signals are received and processed to yield the direction and range of the remote objects.
    • 本发明的特征在于用于搜索和跟踪监视的改进技术。 在本发明中,不同的和随机的(在空间和时间两者中)的信号光束是以发射源元件的阵列同时发射的,以覆盖关于源位置的所有扇区。 此外,对于根据本发明的系统的对策是困难的,因为每个波束的信号波形是不同的和随机的,使得任何波束的任何信号波形的预测非常不可能。 提供接收器传感器元件的阵列以接收从远程对象散射的信号,并且可以或可以不与源阵列元件的元件共同定位并共享。 分散的信号被接收和处理以产生远程物体的方向和范围。
    • 10. 发明申请
    • METHOD AND SYSTEM FOR UNAMBIGUOUS ANGLE RESOLUTION OF A SPARSE WIDE-BAND ANTENNA ARRAY
    • 短波长天线阵列无功角度分辨方法与系统
    • WO2004104628A1
    • 2004-12-02
    • PCT/SE2003/000833
    • 2003-05-21
    • TELEFONAKTIEBOLAGET LM ERICSSON (publ)FALK, Kent, Olof
    • FALK, Kent, Olof
    • G01S13/02
    • H01Q21/205G01S7/2813G01S13/0209G01S2013/0281H01Q21/08H01Q21/28
    • The present inventive concept for bistatic or monostatic radar utilization discloses a method and a system for unambiguous angle resolution of a sparse wide-band array antenna by utilizing an ultra wide-band signal, generally a wide-band noise signal which may be continuous bandwidth limited white or colored noise. The noise signal is typically generated and radiated by a transmitting antenna covering the entire reception range of a receiving sparse antenna array. An echo signal is received by the sparse receiving array containing n antenna elements, which are generally positioned with separation distances of several wavelengths without creating strong grating lobes due to the type of generated transmit signal. By means of a selected auto-correlation function defining the wide-band noise signal power spectrum, the convolution of the radiated output signal and the received echo input signal will give the target range information, the individual time-delay setting for each antenna element will give an unambiguous angular resolution.
    • 本发明的用于双基或单稳态雷达利用的概念公开了一种通过利用超宽带信号(通常可以是连续带宽限制的宽带噪声信号)来简化稀疏宽带阵列天线的明确角度分辨率的方法和系统 白色或彩色噪音。 噪声信号通常由覆盖接收稀疏天线阵列的整个接收范围的发射天线产生和辐射。 由包含n个天线元件的稀疏接收阵列接收回波信号,这些天线元件通常以几个波长的分离距离定位,而不会由于所产生的发射信号的类型而产生强的光栅。 通过定义宽带噪声信号功率谱的选定的自相关函数,辐射输出信号与接收到的回波输入信号的卷积将给出目标范围信息,每个天线元件的各个时间延迟设置将 给出明确的角分辨率。