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公开(公告)号：USH2015H1
公开(公告)日：2002-03-05
申请号：US08414824
申请日：1995-03-31
Applicant: William M. Waters
Inventor： William M. Waters
IPC: H04B166
Abstract: This invention is a communication system utilizing sharply bandlimited waveforms for sampled data communications computed for each sample value in a sequence of data samples. The computed waveform is centered at a sample point, weighted by a corresponding data value, and truncated outside an appropriate time interval. Sampled digital data in a sequence of data samples is received by a computer and scaled according to the value r(tn). A waveform generator, controlled by a computer, generates a sharply bandlimited keying waveform for each data sample and weights each waveform with the data and forms the sum of weighted waveforms to form the output signal in digital form which is converted to analog form. The analog output of the waveform generator is passed through a low-pass filter to filter out any harmonics generated, up-converted to produce a desired carrier frequency which can then be multiplexed, if required, and output as radio frequency (RF) energy which can be received by any standard receiver.
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公开(公告)号：US4573050A
公开(公告)日：1986-02-25
申请号：US467421
申请日：1983-02-17
Applicant: William M. Waters
Inventor： William M. Waters
CPC classification number: G01S13/426 , G01S13/18
Abstract: A dual scan rate radar system (DSR) including a phased array antenna, a tsmitter, a receiver and a control unit. Each rf pulse from the transmitter includes contiguous long-range and short-range pulses. The control unit adjusts the antenna so that the long-range pulse is transmitted into a slow beam at .theta..sub.S and the short-range pulse is transmitted into a fast beam at .theta..sub.F. The control unit also adjusts the antenna to receive the short-range pulse echos during a first part of the interpulse interval and the long-range pulse echos during a second part of the interpulse interval. The angles .theta..sub.S and .theta..sub.F are varied so that the slow and fast beam are scanned at dual rates R.sub.S and R.sub.F, respectively, where R.sub.S
Abstract translation: 包括相控阵天线，发射机，接收机和控制单元的双扫描速率雷达系统（DSR）。 来自发射机的每个射频脉冲包括连续的远程和短距离脉冲。 控制单元调节天线，使得远程脉冲在θS处被发送到慢波束，并且短距离脉冲在θ处被传输到快速波束中。控制单元还调节天线以接收短距离脉冲， 在间脉冲间隔的第一部分期间的范围脉冲回波和在脉冲间隔的第二部分期间的远程脉冲回波。 角度θ和θF的变化使得慢和快的光束分别以RS和RF的双速率扫描，其中RS
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公开(公告)号：US4468794A
公开(公告)日：1984-08-28
申请号：US338396
申请日：1982-01-11
Applicant: William M. Waters , Bobby R. Jarrett
Inventor： William M. Waters , Bobby R. Jarrett
CPC classification number: H03D1/2245 , G01S7/288
Abstract: A digital coherent detector for sampling a band-limited IF signal directlyo obtain its in-phase and quadrature coefficients I(t) and Q(t) without using quadrature channels comprising:an A/D converter for sampling and digitizing an IF signal r(t)=I(t) cos 2.pi. f.sub.o t-Q(t) sin 2.pi. f.sub.o t at a sampling frequency of f.sub.s =2f.sub.o /(M-1/2)=2W. where M is an integer, W is the bandwidth of the input signal, and f.sub.o is the center frequency of the signal, so that the sin and cos sinosoidal terms alternately go to zero and one respectively, thereby alternately yielding the sample values I(t) and then Q(t);a finite impulse response digital filter for estimating the value r(t) for the coefficient whose sinosoidal term has gone to zero in a given sample with the function ##EQU1## where s(t-n/2W) is a self truncating interpolation function; and a switching circuit for properly setting the signs for r(t.sub.m) and r(.about.t.sub.m) and switching these terms between I and Q output lines in accordance with a sampling clock pulse.
Abstract translation: 一种数字相干检测器，用于直接采样频带限制IF信号以获得其同相和正交系数I（t）和Q（t），而不使用正交信道，包括：A / D转换器，用于对IF信号r进行采样和数字化 （f）= 2fo /（M-1/2）= 2W的采样频率（t）= I（t）cos 2 pi fot -Q（t）sin 2 pi。 其中M是整数，W是输入信号的带宽，fo是信号的中心频率，使得sin和cos sinosoidal项交替地分别变为零和1，从而交替地产生样本值I（t ）和Q（t）; 一个有限的脉冲响应数字滤波器，用于在函数
中，其中s（t-n / 2W）是自截断内插函数，估计在给定样本中其sinosoidal项变为零的系数的值r（t） 以及用于适当地设置r（tm）和r（DIFFERENCE tm）的符号并根据采样时钟脉冲在I和Q输出线之间切换这些项的开关电路。
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公开(公告)号：US3971211A
公开(公告)日：1976-07-27
申请号：US457286
申请日：1974-04-02
Applicant: Jay D. Wethe , William M. Waters
Inventor： Jay D. Wethe , William M. Waters
CPC classification number: F02C3/28 , F01K23/06 , F01K25/103 , F01K7/32
Abstract: Gas turbine, steam turbine and/or process steam systems are combined with supercritical carbon dioxide cycle engines to produce major improvements in net plant efficiency by using the heat inputs and outputs of the supercritical CO.sub.2 cycle to supply or remove heat in advantageous ways to the gas turbine, steam turbine and/or process steam systems.
Abstract translation: 燃气轮机，蒸汽轮机和/或过程蒸汽系统与超临界二氧化碳循环发动机结合，通过使用超临界CO 2循环的热输入和输出以有利的方式供应或去除热量来产生净工厂效率的主要改进 涡轮机，汽轮机和/或过程蒸汽系统。
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公开(公告)号：USH966H
公开(公告)日：1991-09-03
申请号：US620182
申请日：1990-11-30
Applicant: William M. Waters , Clifford L. Temes
Inventor： William M. Waters , Clifford L. Temes
IPC: H01Q15/24 , H01Q19/195
CPC classification number: H01Q19/195 , H01Q15/248
Abstract: This invention reduces the weight and bulk of shipboard-mounted microwave antenna systems by achieving horizontally and vertically polarized radar return signals without the need for a rotary joint.
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公开(公告)号：USH955H
公开(公告)日：1991-08-06
申请号：US620183
申请日：1990-11-30
Applicant: William M. Waters
Inventor： William M. Waters
IPC: G01S13/90
CPC classification number: G01S13/9035
Abstract: An Inverse Synthetic Aperture Radar (ISAR) imaging system provides an image of an incoming aircraft for the purpose of deciding which retaliatory tactic, if any, will be employed. By estimating change rates in attitude about one or more of the roll, pitch, and yaw axes, for an aircraft on a course toward the search radar, estimates of rate of change provide information from which a reliable ISAR image may be prepared. A more identifiable target and relief from ambiguity about the apparent intentions of the incoming aircraft are the result.
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公开(公告)号：US4574287A
公开(公告)日：1986-03-04
申请号：US472330
申请日：1983-03-04
Applicant: William M. Waters
Inventor： William M. Waters
IPC: H01Q3/18 , H01Q19/195
CPC classification number: H01Q3/18 , H01Q19/195
Abstract: A beam scanning antenna system that uses a small, rapidly rotatable feed enna to illuminate a large, fixed secondary collimating device, such as a reflector or electromagnetic lens, which in turn illuminates a large, fixed primary collimating device. The primary collimating device forms a narrow collimating beam that is reflected or transmitted into space. Rotation of the small feed antenna causes the beam to scan.
Abstract translation: 射束扫描天线系统，其使用小的，快速可旋转的馈送天线来照射大的固定的次级准直装置，例如反射器或电磁透镜，其反过来照亮大的固定的初级准直装置。 主准直装置形成被反射或传输到空间中的窄准直光束。 小型馈电天线的旋转导致光束扫描。
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公开(公告)号：US5422584A
公开(公告)日：1995-06-06
申请号：US953380
申请日：1992-09-30
Applicant: William M. Waters
Inventor： William M. Waters
Abstract: A waveform generator is provided for generating a high frequency waveform. A pulse generator provides a pulse train at a low frequency. A pulse converter converts the pulse train into an alternatingly positive and negative groups of pulses. A bandpass filter passes the alternatingly positive and negative groups of pulses in a frequency band centered at the high frequency to output the generated waveform at the high frequency. When the groups of pulses are a pair of pulses, a sine wave is output from the bandpass filter. A pulse delay circuit can be used to variably delay the pulse train and thereby cause a phase change in the generated waveform.
Abstract translation: 提供了用于产生高频波形的波形发生器。 脉冲发生器以低频提供脉冲串。 脉冲转换器将脉冲串转换成交替的正和负组脉冲。 带通滤波器以高频中心的频带中的交替的正和负脉冲组通过，以高频率输出生成的波形。 当脉冲组是一对脉冲时，从带通滤波器输出正弦波。 可以使用脉冲延迟电路来可变延迟脉冲序列，从而引起所生成的波形的相位变化。
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公开(公告)号：US5410499A
公开(公告)日：1995-04-25
申请号：US220718
申请日：1994-03-31
Applicant: William M. Waters
Inventor： William M. Waters
CPC classification number: H03H17/08
Abstract: A phase shifter for shifting the phase of directly sampled bandpass signalsithout having to convert to complex (I,Q) form is disclosed. An application requiring a plurality of appropriately phase shifted signals is a phased array antenna. In the operation of an exemplary phase shifter, a sequence of directly sampled data is passed into an exemplary three-stage storage unit to sequentially store r.sub.n+1, r.sub.n and r.sub.n-1 data samples. The r.sub.n sample is multiplied by cos .phi. to develop an r.sub.n cos .phi. signal, where .phi. is the desired phase shift angle. At the same time, the r.sub.n+1 and r.sub.n-1 data samples are subtracted from each other and the result is multiplied by w.sub.1 sin .phi. to develop the value w.sub.1 (r.sub.n+1 -r.sub.n-1)sin .phi.. This value is added to r.sub.n cos .phi. to produce an estimated sample value r.sub.n ', which is approximately equivalent to data directly sampled from a signal phase-shifted by .phi..
Abstract translation: 公开了一种用于使直接采样的带通信号的相位移位而不必转换为复数（I，Q）形式的移相器。 需要多个适当相移信号的应用是相控阵天线。 在示例性移相器的操作中，直接采样数据的序列被传送到示例性三级存储单元中以顺序地存储rn + 1，rn和rn-1数据样本。 将rn采样乘以cos phi以产生rn cos phi信号，其中phi是期望的相移角。 同时，将rn + 1和rn-1数据样本相互减去，并将结果与w1sinφ相乘以产生值w1（rn + 1-rn-1）sinφi。 该值被添加到rn cos phi以产生估计采样值rn'，其大致等于从由phi相移的信号直接采样的数据。
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公开(公告)号：US5237334A
公开(公告)日：1993-08-17
申请号：US876696
申请日：1992-04-28
Applicant: William M. Waters
Inventor： William M. Waters
CPC classification number: H01Q25/008 , H01Q19/062 , H01Q23/00
Abstract: A millimeter wave imaging system receives millimeter wave radiation and provides video imaging signals based thereon. The system comprises an imaging lens for receiving incoming radiation; a focal plane antenna array disposed at the focal plane of the lens on which radiation received by the lens is focussed; and signal processing and display circuitry for processing the output of the antenna array and for producing and displaying corresponding video imaging signals. The focal plane antenna array comprises a planar array of a plurality of conical horns and circular waveguides which, in use, are disposed at the focal plane of the lens; and a microstrip detector assembly coupled to the waveguides for detecting the radiation received thereby. The microstrip detector assembly comprises a dielectric substrate having a plurality of microstrip conductors embedded therein, each microstrip conductor being coupled to a respective one of the waveguides, and a diode detector being connected to each microstrip conductor. A solid state commutator samples the output of the detectors and provides a resultant video imaging control signal.
Abstract translation: 毫米波成像系统接收毫米波辐射并基于此提供视频成像信号。 该系统包括用于接收入射辐射的成像透镜; 焦平面天线阵列，其设置在所述透镜的焦平面上，在所述焦平面上聚焦由所述透镜接收的辐射; 以及用于处理天线阵列的输出并用于产生和显示相应的视频成像信号的信号处理和显示电路。 焦平面天线阵列包括多个锥形喇叭的平面阵列和圆形波导，其在使用中设置在透镜的焦平面处; 以及耦合到波导的微带检测器组件，用于检测由此接收的辐射。 微带检测器组件包括具有嵌入其中的多个微带导体的电介质基板，每个微带导体耦合到相应的一个波导，以及连接到每个微带导体的二极管检测器。 固态换向器对检测器的输出进行采样并提供合成的视频成像控制信号。
