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公开(公告)号：US20140159954A1
公开(公告)日：2014-06-12
申请号：US13707279
申请日：2012-12-06
IPC分类号： G01S3/38
摘要： A direction finding system for finding the angle of arrival of a target signal from a transmitter. The system includes a plurality of directional antennas positioned to face different directions for receiving the target signal. The antennas are mounted as an antenna array on a rotatable mount for supporting and rotating the antenna array. A receiver unit down converts the RF target signal to IF signals that are digitized by an A/D converter providing digital values. A computer computes the power in the signals from the A/D samples. A computer stores calibration information for the directional antennas, processes the digital values and the calibration information to determine a rotation angle α for rotating the antennas to provide new digital values, processes the new digital values and the calibration information to determine an intersection angle, and subtracts the rotation angle from the intersection angle to determine the final value for the angle of arrival of the target signal.
摘要翻译： 一种用于从发射机找到目标信号的到达角度的测向系统。 该系统包括多个定位于面向不同方向的定向天线以接收目标信号。 天线作为天线阵列安装在可旋转的安装座上，用于支撑和旋转天线阵列。 接收机单元将RF目标信号转换为由提供数字值的A / D转换器数字化的IF信号。 计算机计算来自A / D样本的信号的功率。 计算机存储用于定向天线的校准信息，处理数字值和校准信息以确定用于旋转天线以提供新数字值的旋转角α，处理新的数字值和校准信息以确定交叉角度，以及 从交叉角度减去旋转角度，以确定目标信号的到达角度的最终值。
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公开(公告)号：US20110223851A1
公开(公告)日：2011-09-15
申请号：US12728379
申请日：2010-03-22
IPC分类号： H04K3/00
CPC分类号： H04K3/44 , H04K3/28 , H04K3/42 , H04K3/45 , H04K3/46 , H04K2203/16 , H04K2203/34
摘要： An airborne jammer for transport by an aircraft for jamming communications in a communications system where the communications system operates with digital bursts having burst periods measured in time and occurring in a communication frequency band such as GSM having a transmit band and a receive band. The jammer includes a tone comb generator for providing repetitions of jamming signals for the communication frequency band where the jamming signals have jamming signal intervals providing frequency separation between the jamming signals. The jamming signals are generated with a dwell time substantially less than a burst period for the communications system. The jamming signals are transmitted as RF jamming signals to jam communications for mobile stations.
摘要翻译： 一种机载干扰机，用于在通信系统中进行通信的通信系统进行干扰通信，该通信系统中的数字突发具有在时间上测量的突发周期并且发生在诸如具有发射频带和接收频带的GSM的通信频带中。 干扰器包括一个音频发生器，用于提供干扰信号具有干扰信号间隔的通信频带的干扰信号的重复，从而提供干扰信号之间的频率间隔。 干扰信号产生的停留时间明显小于通信系统的脉冲串周期。 干扰信号作为RF干扰信号发送，阻塞移动台的通信。
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公开(公告)号：US20090237289A1
公开(公告)日：2009-09-24
申请号：US11522300
申请日：2006-09-15
IPC分类号： G01S7/38
CPC分类号： H04K3/44 , H04K3/28 , H04K3/42 , H04K3/45 , H04K3/46 , H04K2203/16 , H04K2203/34
摘要： A jammer for jamming communications in a communications system where the communications system operates with digital bursts having burst periods measured in time and occurring in a communication frequency band such as GSM having a transmit band and a receive band. The jammer includes a tone comb generator for providing repetitions of jamming signals for the communication frequency band where the jamming signals have jamming signal intervals providing frequency separation between the jamming signals. The jamming signals are generated with a dwell time substantially less than a burst period for the communications system. The jamming signals are generated concurrently for the transmit band and the receive band and are transmitted as RF jamming signals to jam communications for mobile stations.
摘要翻译： 在通信系统中的通信系统中的干扰通信的干扰器，其中通信系统以具有在时间上测量的突发周期并且发生在诸如具有发射频带和接收频带的GSM的通信频带中的数字脉冲串操作。 干扰器包括一个音频发生器，用于提供干扰信号具有干扰信号间隔的通信频带的干扰信号的重复，从而提供干扰信号之间的频率间隔。 干扰信号产生的停留时间明显小于通信系统的脉冲串周期。 发射频带和接收频带同时产生干扰信号，并作为RF干扰信号发送，以阻止移动台的通信。
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公开(公告)号：US07349457B2
公开(公告)日：2008-03-25
申请号：US10812226
申请日：2004-03-29
CPC分类号： H04B17/16
摘要： A signal analyzer to characterize the RF signal transmitted by a frequency hopping radio transmitter. The transmitted signal is analyzed while hopping across a broad frequency band without knowledge of the hop frequencies, timing or signal bandwidth. A wide range of signal parameters are measured on the dehopped signal to characterize the radio performance and the compliance to the radio specifications.
摘要翻译： 信号分析仪，用于表征由跳频无线电发射机发射的RF信号。 分析传输的信号，同时跳过宽频带，而不知道跳频，定时或信号带宽。 在去噪信号上测量各种信号参数，以表征无线电性能和符合无线电规范。
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公开(公告)号：US09551777B2
公开(公告)日：2017-01-24
申请号：US13707279
申请日：2012-12-06
摘要： A direction finding system for finding the angle of arrival of a target signal from a transmitter. The system includes a plurality of directional antennas positioned to face different directions for receiving the target signal. The antennas are mounted as an antenna array on a rotatable mount for supporting and rotating the antenna array. A receiver unit down converts the RF target signal to IF signals that are digitized by an A/D converter providing digital values. A computer computes the power in the signals from the A/D samples. A computer stores calibration information for the directional antennas, processes the digital values and the calibration information to determine a rotation angle α for rotating the antennas to provide new digital values, processes the new digital values and the calibration information to determine an intersection angle, and subtracts the rotation angle from the intersection angle to determine the final value for the angle of arrival of the target signal.
摘要翻译： 一种用于从发射机找到目标信号的到达角度的测向系统。 该系统包括多个定位于面向不同方向的定向天线以接收目标信号。 天线作为天线阵列安装在可旋转的安装座上，用于支撑和旋转天线阵列。 接收机单元将RF目标信号转换为由提供数字值的A / D转换器数字化的IF信号。 计算机计算来自A / D样本的信号的功率。 计算机存储用于定向天线的校准信息，处理数字值和校准信息以确定用于旋转天线以提供新数字值的旋转角α，处理新的数字值和校准信息以确定交叉角度，以及 从交叉角度减去旋转角度，以确定目标信号的到达角度的最终值。
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公开(公告)号：US06756854B2
公开(公告)日：2004-06-29
申请号：US10284911
申请日：2002-10-31
IPC分类号： H03B2900
CPC分类号： H03B29/00
摘要： A digitally controlled angle noise signal generator for generating a signal with precise and accurate noise. The signal generator is formed of a digital noise generator for generating a digital noise signal &thgr;N, and a digital signal generator for forming an internal signal S. The digital signal generator receives the digital noise signal &phgr;N and modulates the internal signal S with the digital noise signal &phgr;N to generate a digitally controlled signal yg=S{&thgr;N}, where is the modulation operator, with precise and accurate noise.
摘要翻译： 一种数字角度噪声信号发生器，用于产生具有精确和准确噪声的信号。 信号发生器由用于产生数字噪声信号thetaN的数字噪声发生器和用于形成内部信号S的数字信号发生器形成。数字信号发生器接收数字噪声信号phi，并用数字噪声调制内部信号S 信号phiN以产生数字控制信号yg = S
{thetaN}，其中 是调制操作员，具有精确和准确的噪声。 -
公开(公告)号：US08170467B2
公开(公告)日：2012-05-01
申请号：US12728379
申请日：2010-03-22
CPC分类号： H04K3/44 , H04K3/28 , H04K3/42 , H04K3/45 , H04K3/46 , H04K2203/16 , H04K2203/34
摘要： An airborne jammer for transport by an aircraft for jamming communications in a communications system where the communications system operates with digital bursts having burst periods measured in time and occurring in a communication frequency band such as GSM having a transmit band and a receive band. The jammer includes a tone comb generator for providing repetitions of jamming signals for the communication frequency band where the jamming signals have jamming signal intervals providing frequency separation between the jamming signals. The jamming signals are generated with a dwell time substantially less than a burst period for the communications system. The jamming signals are transmitted as RF jamming signals to jam communications for mobile stations.
摘要翻译： 一种机载干扰机，用于在通信系统中进行通信的通信系统进行干扰通信，该通信系统中的数字突发具有在时间上测量的突发周期并且发生在诸如具有发射频带和接收频带的GSM的通信频带中。 干扰器包括一个音频发生器，用于提供干扰信号具有干扰信号间隔的通信频带的干扰信号的重复，从而提供干扰信号之间的频率间隔。 干扰信号产生的停留时间明显小于通信系统的脉冲串周期。 干扰信号作为RF干扰信号发送，阻塞移动台的通信。
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公开(公告)号：US07697885B2
公开(公告)日：2010-04-13
申请号：US11522300
申请日：2006-09-15
CPC分类号： H04K3/44 , H04K3/28 , H04K3/42 , H04K3/45 , H04K3/46 , H04K2203/16 , H04K2203/34
摘要： A jammer for jamming communications in a communications system where the communications system operates with digital bursts having burst periods measured in time and occurring in a communication frequency band such as GSM having a transmit band and a receive band. The jammer includes a tone comb generator for providing repetitions of jamming signals for the communication frequency band where the jamming signals have jamming signal intervals providing frequency separation between the jamming signals. The jamming signals are generated with a dwell time substantially less than a burst period for the communications system. The jamming signals are generated concurrently for the transmit band and the receive band and are transmitted as RF jamming signals to jam communications for mobile stations.
摘要翻译： 在通信系统中的通信系统中的干扰通信的干扰器，其中通信系统以具有在时间上测量的突发周期并且发生在诸如具有发射频带和接收频带的GSM的通信频带中的数字脉冲串操作。 干扰器包括一个音频发生器，用于提供干扰信号具有干扰信号间隔的通信频带的干扰信号的重复，从而提供干扰信号之间的频率间隔。 干扰信号产生的停留时间明显小于通信系统的脉冲串周期。 发射频带和接收频带同时产生干扰信号，并作为RF干扰信号发送，以阻止移动台的通信。
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公开(公告)号：US07634239B2
公开(公告)日：2009-12-15
申请号：US10812227
申请日：2004-03-29
IPC分类号： H04B17/00
CPC分类号： H04B1/713
摘要： The subject of this patent is a system to generate RF frequency hopped signals that can be used to test radio receivers over the range of their signal specifications. The hop sequence and symbols in the signal is decoded from signals transmitted by the same or different radio of the same specification. The system can set various signal parameters to any prescribed value. These parameters include carrier frequency error, bit rate error, rise and fall times, amplitude ripple and roll off, modulation depth, nonlinearities, burst duration, burst start time and burst interval. Signal interference can be added to the signal including tones, other signals, noise and other signals of the same as the test radio. Similarly other communications equipment can be tested by the combination of receiving and demodulating a transmitted and regenerating the signal with the same symbols with specified signal parameters.
摘要翻译： 该专利的主题是产生可用于在其信号规格范围内测试无线电接收机的RF跳频信号的系统。 信号中的跳频序列和符号由相同规格的相同或不同无线电发射的信号进行解码。 系统可以将各种信号参数设置为任意规定值。 这些参数包括载波频率误差，比特率误差，上升和下降时间，幅度波动和滚降，调制深度，非线性，突发持续时间，突发起始时间和突发间隔。 信号干扰可以添加到包括音调，其他信号，噪声和与测试无线电相同的其他信号的信号中。 类似地，可以通过组合接收和解调具有指定信号参数的具有相同符号的信号的发送和再生来测试其它通信设备。
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公开(公告)号：US07532856B2
公开(公告)日：2009-05-12
申请号：US11398748
申请日：2006-03-24
摘要： A jammer for generating and transmitting RF broadband jamming signals for jamming one or more local RF receivers. The jammer includes a broadband antenna unit for receiving broadband RF jammer received signals from local transmitters and for transmission of regenerated broadband RF jamming signals to the local receivers. The jammer uses a plurality of jamming algorithms including a regeneration algorithm and one or more alteration algorithms that alter the regenerated signals whereby the altered regenerated signals are asynchronous with respect to ones of, or all of, the jammer received signals. The alteration algorithms include a chopping algorithm and an FM modulation algorithm.
摘要翻译： 用于产生和发送用于干扰一个或多个本地RF接收机的RF宽带干扰信号的干扰器。 干扰器包括宽带天线单元，用于接收来自本地发射机的宽带RF干扰接收信号，并将再生的宽带RF干扰信号传输到本地接收机。 干扰器使用多个干扰算法，包括再生算法和改变再生信号的一个或多个改变算法，由此改变的再生信号相对于干扰信号的信号中的一个或全部是异步的。 改进算法包括斩波算法和FM调制算法。
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