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1. 发明授权

US07440989B1 Kernel function approximation and receiver 有权
标题翻译：内核函数近似和接收
公开(公告)号：US07440989B1
公开(公告)日：2008-10-21
申请号：US10816353
申请日：2004-04-02
申请人： James B. Y. Tsui , John M. Emmert , Stephen L. Hary , David M. Lin , Nicholas A. Pequignot , Keith M. Graves
发明人： James B. Y. Tsui , John M. Emmert , Stephen L. Hary , David M. Lin , Nicholas A. Pequignot , Keith M. Graves
IPC分类号： G06F15/00
CPC分类号： G06F17/142
摘要： A Fourier transformation arrangement usable in an electronic warfare radio receiver for analyzing spectral content of multiple transmitter-sourced brief duration incoming signals for their signal characteristics. The disclosed Fourier transformation arrangement includes approximated Kernel function values disposed in a significant plurality of locations about a real-imaginary coordinate axis origin according to disclosed locating principles. The points are displaced from the origin by magnitudes having real and imaginary component lengths of powers of two commencing with zero. Multiplication involving a power of two component length during a Kernel function utilization are preferably achieved by way of an expanded binary shift multiplication algorithm in lieu of a full fledged digital multiplication algorithm. A group of guiding principles for selecting desirable approximation Kernel function locations is included.
摘要翻译：一种用于电子战无线电接收机的傅里叶变换装置，用于分析其信号特性的多个发射机源短暂进入信号的频谱内容。公开的傅里叶变换装置包括根据所公开的定位原理设置在围绕实虚坐标轴原点的有意义的多个位置中的近似的内核函数值。这些点从原点移位，具有从0开始的实数和虚部的权力分量为2的幅度。在内核功能利用期间涉及两个分量长度的幂的乘法优选地通过扩展的二进制移位乘法算法代替完整的数字乘法算法来实现。包括一组用于选择所需近似内核函数位置的指导原则。

2. 依法登记的发明

USH2109H1 Passive microwave direction finding with monobit fourier transformation receiver and matrix coupled antenna 有权
公开(公告)号：USH2109H1
公开(公告)日：2004-09-07
申请号：US10115819
申请日：2002-04-03
申请人： James B. Y. Tsui , Keith M. Graves
发明人： James B. Y. Tsui , Keith M. Graves
IPC分类号： G01S7495
摘要： A passive instantaneous microwave signal frequency identifying and angle of arrival identifying system employing a beam steering multiple element antenna coupled through a Butler matrix to a plurality of simplified Fourier transformation radio receivers wherein unit value or near unit value magnitudes of the Kernel function ⅇ - j2 ⁢ ⁢ π ⁢ ⁢ kn N in the receivers' Fourier transformations are used to elude transformation computation complexity and resulting radio receiver size and cost penalties. Limiting amplifiers, a video signal path and direction finding encoding logic are also employed. Airborne military application of the system in electronic warfare direction finding, radar frequency determination and other activities is included.

3. 发明授权

US07769108B1 Digital receiver instantaneous dynamic range enhancement 有权
标题翻译：数字接收机瞬时动态范围增强
公开(公告)号：US07769108B1
公开(公告)日：2010-08-03
申请号：US11014456
申请日：2004-12-17
申请人： James B. Y. Tsui , David M. Lin , Stephen L. Hary , Nicholas A. Pequignot , Keith M. Graves , John M. Emmert
发明人： James B. Y. Tsui , David M. Lin , Stephen L. Hary , Nicholas A. Pequignot , Keith M. Graves , John M. Emmert
IPC分类号： H03K9/00
CPC分类号： H04L27/0002 , H03M1/12
摘要： A moderate cost and complexity digital radio receiver system having enhanced instantaneous dynamic range response to the receipt of simultaneous signals and also providing large single signal dynamic range. Multiple signal instantaneous dynamic range improvement is achieved through use of a suppressed zero signal amplitude representation arrangement having a selected number of signal amplitude representing digital bits rather than the larger entire array of digital output bits of the receiver system's analog to digital converter. Digital apparatus for accomplishing the selection of desired high order bits from the analog to digital converter output is also disclosed in detail. Use of a “Monobit” and related simplified Fourier transformation radio receivers as disclosed in identified previous patents of the recited inventors and colleagues is preferred for embodying the digital radio receiver circuit included in a present system.
摘要翻译：适中的成本和复杂的数字无线电接收机系统对接收到同时信号具有增强的瞬时动态范围响应，并且还提供大的单信号动态范围。通过使用具有表示数字位的选定数量的信号幅度而不是接收机系统的模数转换器的数字输出位的较大整个阵列的抑制的零信号幅度表示布置来实现多信号瞬时动态范围改进。还详细公开了用于完成从模数转换器输出选择期望的高位的数字装置。所列出的发明人和同事的已确认的先前专利中所公开的使用“Monobit”和相关的简化傅立叶变换无线电接收机是优选的，以体现本系统中包括的数字无线电接收机电路。

4. 发明授权

US06448921B1 Channelized monobit electronic warfare radio receiver 失效
标题翻译：信道化单轨电子战无线电接收机
公开(公告)号：US06448921B1
公开(公告)日：2002-09-10
申请号：US09917589
申请日：2001-07-30
申请人： James B. Y. Tsui , James N. Hedge , Vasu D. Chakravarthy , Keith M. Graves
发明人： James B. Y. Tsui , James N. Hedge , Vasu D. Chakravarthy , Keith M. Graves
IPC分类号： G01S740
CPC分类号： G01S7/021 , G01S7/285
摘要： An electronic warfare radio receiver of the monobit type wherein the signal processing circuitry, including a bandpass filter array, analog to digital converter circuit and Fourier transformation circuit, are located in a plurality of parallel-disposed but isolated receiver channels. The parallel disposed receiver channels limit interference between received signals and enable the customary processing of two simultaneous input signals of differing signal strength in each receiver channel; this increases the number of simultaneous input signals processable by a factor equaling the number of receiver channels used. Single chip embodiment of the receiver is disclosed thereby tending to compensate for the added complexity of the channelized processing. Signals falling in digital filter overlap regions are addressed by the invention.
摘要翻译：单声道类型的电子战无线电接收机，其中包括带通滤波器阵列，模数转换器电路和傅立叶变换电路的信号处理电路位于多个平行布置但隔离的接收器通道中。平行设置的接收机通道限制接收信号之间的干扰，并使得能够在每个接收机通道中对两个不同信号强度的同时输入信号进行常规处理; 这增加了可处理的同时输入信号的数量等于所使用的接收机信道的数量。公开了接收机的单芯片实施例，从而趋向于补偿信道化处理的附加复杂性。落入数字滤波器重叠区域的信号由本发明解决。

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