-
公开(公告)号：US3781886A
公开(公告)日：1973-12-25
申请号：US3781886D
申请日：1972-05-22
CPC分类号： G01S13/68 , G01S13/422
摘要： A method is disclosed for target ray resolution in coherent, conically scanned radar when a target image is present. An envelope detector and frequency discriminator operate on the IF signal. The fundamental and second harmonic components of the conical scan out of the discriminator are used in a computer along with the DC, fundamental, and second harmonic of the envelope out of the detector to solve five equations in five unknowns. That yields the elevation angles to the target and its image. The larger of the two angles is selected as the elevation angle to the target. The first harmonic and the DC component of the envelope are employed to produce an estimate of the target azimuth angle.
摘要翻译： 公开了当存在目标图像时在相干，圆锥扫描雷达中的目标射线分辨率的方法。 信号检测器和鉴频器对IF信号进行操作。 鉴别器的锥形扫描的基波和二次谐波分量与计算机一起被用于检测器外的包络的直流，基波和二次谐波，以解决五个未知数的五个方程。 这产生与目标及其图像的仰角。 选择两个角度中较大的角度作为与目标的仰角。 使用包络的一次谐波和DC分量来产生目标方位角的估计。
-
2.发明授权Convergence rate improvement for adaptive receiving array antennas of higher order than 2-pulse mti cancellers 失效自适应接收高阶2脉冲MTI解码器阵列天线的收敛速度改进
公开(公告)号：US3725922A
公开(公告)日：1973-04-03
申请号：US3725922D
申请日：1971-09-13
IPC分类号： G01S13/524 , H01Q3/26 , G01S9/42
CPC分类号： G01S13/5242 , H01Q3/26
摘要： A system for improving the convergence rate of adaptive receiving array antenna systems in MTI radar systems, having cancellers of higher orders than a 2-pulse canceller, is provided by a transformation matrix according to the following technique. Form the matrix H with elements
摘要翻译： 根据以下技术，通过变换矩阵提供用于提高MTI雷达系统中自适应接收阵列天线系统的收敛速度的系统，其具有比2脉冲消除器更高阶的消除器。
-
公开(公告)号：US3624641A
公开(公告)日：1971-11-30
申请号：US3624641D
申请日：1969-06-05
发明人： BRENNAN LAWRENCE E , REED IRVING S
摘要： A phase converter is disclosed in which a selected number of higher order even harmonics of each of two signals, whose phase difference is to be converted to digital form, are generated. Corresponding even harmonics are mixed in separated mixers and filtered to provide an output in binary digital form. The fundamental harmonics of the two signal are combined to provide two outputs in binary digital form which together with the outputs of the other harmonics represent an output in the form of a reflected binary code.
-
公开(公告)号：US3727220A
公开(公告)日：1973-04-10
申请号：US3727220D
申请日：1971-09-13
IPC分类号： G01S7/292 , G01S13/524 , H01Q3/26 , G01S9/42
CPC分类号： G01S7/2923 , G01S13/5242 , H01Q3/2647
摘要： Adaptive doppler signal processing is disclosed in coherent pulsed radars with phased array antennas. Outputs from each range ring are obtained for each of K consecutive pulses and from each of N receiving array elements. These KN outputs are multiplied by complex weights and added to obtain the system output. The complex weights are controlled adaptively. To improve the convergence rate of an adaptive 2-pulse moving-target-indicating system, the pulse outputs V1 and V2 from each of the N elements are first passed through a transformation matrix.
摘要翻译： 在具有相控阵天线的相干脉冲雷达中公开了自适应多普勒信号处理。 从K个连续脉冲中的每一个和从N个接收阵列元件中的每一个获得来自每个范围环的输出。 这些KN输出乘以复数权重并相加以获得系统输出。 复杂的权重被自适应地控制。 为了提高自适应2脉冲移动目标指示系统的收敛速度，首先通过变换矩阵传递来自N个要素中的每一个的脉冲输出V1和V2。
-
公开(公告)号：US3916417A
公开(公告)日：1975-10-28
申请号：US21074171
申请日：1971-12-22
CPC分类号： H01Q25/002 , H01Q21/22
摘要： A multifunction receiving array antenna system is provided which utilizes energy normally rejected (reflected or dissipated) by antennas employing amplitude tapering to derive auxiliary antenna outputs in addition to the main output. This is achieved at negligible degradation to the performance of the main antenna channel by configurationally redesigning the array feed structure so as to divert the normally rejected energy to additional antenna ports. The technique is compatible with applications, such as radar applications, in which the antenna must be used to transmit as well as to receive. The auxiliary outputs could, for example, have broad, relatively omnidirectional, patterns useful for side-lobe cancellation and side-lobe blanking applications.
摘要翻译： 提供了一种多功能接收阵列天线系统，其利用通过使用振幅逐渐减小的天线通常被拒绝（反射或耗散）的能量来导出辅助天线输出以及主输出。 这是通过配置重新设计阵列馈电结构以便将正常被拒绝的能量转移到另外的天线端口而对主天线通道的性能可以忽略不计的降低。 该技术与天线必须用于传输和接收的应用（如雷达应用）兼容。 辅助输出可以例如具有广泛的，相对全向的图案，其用于旁瓣消除和旁瓣消隐应用。
-
公开(公告)号：US3889067A
公开(公告)日：1975-06-10
申请号：US40906273
申请日：1973-10-24
CPC分类号： H04Q11/04
摘要： A digital telephone switching system is disclosed in which voice or other communication signals are converted to digital signals and switched in the digital form. The digital signals are reconverted to analog signals and sent out on the selected line or trunk. To accomplish that, dialing signals (pulses or tones) are used to enable a selected AND gate in a matrix for transmission from the calling line to a line called, using an analog-to-digital converter on the calling line and a digital-toanalog converter on the called line. An AND gate selectively enabled in the same manner in a second matrix provides transmission from the called line to the calling line, again using analog-to-digital and digital-to-analog converters. For two-wire circuits hybrid junctions couple the calling line and the called line to the analog ends of associated analog-todigital and digital-to-analog converters. In a second embodiment, the digital switching matrices are implemented by the use of time division multiplexing between input and output registers. In either embodiment the switching action could be controlled by a programmable digital computer.
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.013 秒)
