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1. 发明授权

US4164738A Focused synthetic array 失效
标题翻译：聚焦合成阵列
公开(公告)号：US4164738A
公开(公告)日：1979-08-14
申请号：US560386
申请日：1966-06-23
申请人： Peter Swerling
发明人： Peter Swerling
IPC分类号： G01S7/04 , G01S13/90 , G01S9/42
CPC分类号： G01S7/04 , G01S13/9005
摘要： This invention relates to a focused synthetic array wherein a different signal from a crossed beam antenna is converted to a bipolar video signal and applied as the input to a synthetic array processor. In another embodiment of the invention there is a separate reduction of each beam output from a crossed beam antenna to bipolar video signals with a separate application of asymmetrical amplitude weights to the two bipolar video records and a subsequent subtraction in the course of synthetic array processing.
摘要翻译：本发明涉及聚焦合成阵列，其中来自交叉波束天线的不同信号被转换为双极视频信号，并作为输入应用于合成阵列处理器。在本发明的另一个实施例中，通过对两个双极视频记录的不对称幅度权重的单独应用以及在合成阵列处理过程中的后续减法，将交叉波束天线的每个波束输出单独减少到双极视频信号。

2. 发明授权

US4146889A Method and apparatus for sidelobe reduction in radar 失效
标题翻译：雷达雷达减少的方法和装置
公开(公告)号：US4146889A
公开(公告)日：1979-03-27
申请号：US219227
申请日：1972-01-20
申请人： Lawrence E. Brennan , Irving S. Reed , Peter Swerling
发明人： Lawrence E. Brennan , Irving S. Reed , Peter Swerling
IPC分类号： G01S7/28 , H01Q3/26 , G01S3/38 , G01S1/02
CPC分类号： H01Q3/2629 , G01S7/2813
摘要： In a system for reducing sidelobes in adaptive receiving array antennas, an auxiliary signal is radiated through an omnidirectional antenna collocated with the phase center of an adaptive array antenna. The auxiliary signal is so transmited as to form a probe or pilot beam with a notch in the main-beam direction by transmitting through both the omnidirectional and the array antenna simultaneously. The relative phases of both antennas are controlled to obtain near-zero radiation in the main-beam direction. Adaptive control loops receive returns from the probe beam and adjust the weights of the receiving array antenna. The receiving array weights are used to form a low sidelobe antenna pattern for reception of the main radar signal, which is transmitted with a directional pattern. Either time or frequency separation may be used to distinguish the probe beam from the main beam.

3. 发明授权

US5582176A Methods and apparatus for automatically determining edge frequency in doppler ultrasound signals 失效
标题翻译：自动确定多普勒超声信号边缘频率的方法和装置
公开(公告)号：US5582176A
公开(公告)日：1996-12-10
申请号：US515480
申请日：1995-08-15
申请人： Peter Swerling , Jon Dovala , Nick Okasinski , Andras Boross
发明人： Peter Swerling , Jon Dovala , Nick Okasinski , Andras Boross
IPC分类号： G01S15/52 , G01S15/58 , G01S15/88 , A61B8/00
CPC分类号： G01S15/52 , G01S15/582 , G01S15/88
摘要： Doppler Ultrasound techniques have been used for many years to measure the flow rate of fluids. One of the challenges in using these techniques is to separate fluid flow signal from background noise. The present invention is directed to methods and apparatus for automatically distinguishing fluid flow signal from noise. It is found that noise in Doppler ultrasound techniques has characteristic of a white Gaussian spectral distribution and the mean noise can be characterized as a constant. The present invention involves measuring ultrasonic signals, generating sets of discrete spectral components from these signals, and statistically determining a maximum likelihood estimation from the spectral components. This estimation is used to calculate the fluid velocity.
摘要翻译：多普勒超声技术多年来一直用于测量流体的流速。使用这些技术的挑战之一是将流体流动信号与背景噪声分开。本发明涉及用于自动区分流体流动信号与噪声的方法和装置。发现多普勒超声技术中的噪声具有白高斯光谱分布的特征，平均噪声可以表征为常数。本发明涉及测量超声波信号，从这些信号产生一组离散频谱分量，并从频谱分量统计确定最大似然估计。该估计用于计算流体速度。

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