公开(公告)号：US4482975A

公开(公告)日：1984-11-13

申请号：US362740

申请日：1982-03-29

申请人： Thomas M. King ,  Cary R. Champlin ,  Sam M. Daniel

发明人： Thomas M. King ,  Cary R. Champlin ,  Sam M. Daniel

IPC分类号： G06F1/035 ,  G06F7/52 ,  G06F7/535 ,  G06J1/00

CPC分类号： G06F7/535 ,  G06F1/0356 ,  G06F2101/12 ,  G06F2207/5354 ,  G06F2207/5356

摘要： Apparatus for generating an output digital signal that approximates the value of a predetermined mathematical function lying in the X-Y plane at a point defined by an input digital signal. The mathematical function is approximated by a plurality of linear least-mean-square line segments each of which includes a central point, R, and a slope, S, with the desired point being defined by the equation F(X) approximates R+S.DELTA.X, where .DELTA.X is the X distance between the central point R and the desired point. R, S and .DELTA.X are precalculated and stored in PROM lookup tables and combined as stated in the above equation.

摘要翻译： 一种用于产生输出数字信号的装置，其近似于由输入数字信号限定的点处于X-Y平面中的预定数学函数的值。 数学函数由多个线性最小均方线段近似，每个线段包括中心点R和斜率S，其中期望点由等式F（X）定义为近似R + S DELTA X，其中DELTA X是中心点R和期望点之间的X距离。 R，S和DELTA X被预先计算并存储在PROM查找表中并按上述等式组合。

公开(公告)号：US4660143A

公开(公告)日：1987-04-21

申请号：US653641

申请日：1984-09-24

申请人： Thomas M. King ,  Sam M. Daniel

发明人： Thomas M. King ,  Sam M. Daniel

IPC分类号： G01S7/295 ,  G06F5/01 ,  G06F13/12

CPC分类号： G06F9/3879 ,  G01S7/295 ,  G06F5/012

摘要： The programmable interface gives a Block Floating Point processor the capability of performing various real-time signal algorithms on collected radar data in an external batch memory. Normally, Block Floating Point processors are not capable of accommodating data having varying exponent scales such as the data received from a batch memory in a radar system. The programmable interface solves the exponential normalization process using two data paths, an instruction processor, a microcode processor, a pre-shift control and an address generator. Data flow instructions are passed from the instruction processor to the microcode processor which executes the particular instruction's timing sequence. The first data path passes data from the batch memory to the array processor and contains a pre-shifter to normalize the batch memory-stored data. The second data path passes the processed data from the processor to the batch memory. The pre-shifter portion of the first data path is controlled by a pre-shifter control section in the invention, which generates a 4-bit code used to command the pre-shifter. Finally, an address generator creates a sequence of fetch and store addresses for data travelling between the batch memory and the array processor.

摘要翻译： 可编程接口使块浮点处理器能够在外部批量存储器中对收集的雷达数据执行各种实时信号算法。 通常，块浮点处理器不能容纳具有不同指数级别的数据，例如在雷达系统中从批量存储器接收的数据。 可编程接口使用两个数据路径，指令处理器，微代码处理器，预移位控制和地址发生器来解决指数归一化过程。 数据流指令从指令处理器传送到执行特定指令定时序列的微代码处理器。 第一个数据路径将数据从批量存储器传递到阵列处理器，并包含一个预移位器来对批量存储器存储的数据进行归一化。 第二数据路径将处理后的数据从处理器传递到批量存储器。 第一数据路径的移位前部分由本发明中的预移位器控制部分控制，其产生用于命令前置换头的4位代码。 最后，地址生成器为在批量存储器和阵列处理器之间传输的数据创建一系列获取和存储地址。

公开(公告)号：US4354249A

公开(公告)日：1982-10-12

申请号：US132963

申请日：1980-03-24

申请人： Thomas M. King ,  Sam M. Daniel

发明人： Thomas M. King ,  Sam M. Daniel

IPC分类号： G06F7/48 ,  G06F7/52

CPC分类号： G06F7/4812

摘要： The processing unit includes at least one complex multiplier having hour multiplying circuits for multiplying the real and imaginary components of two complex vectors and combining the products to produce a complex output vector. Representing the input complex vectors by (A+jB) and (C+jD) the output complex vector becomes (AC-BD)+j(BC+AD). The combining circuits can be switched so that one of the input complex vectors is conjugated and the output complex vector becomes (AC+BD)+j(BC-AD). Thus, the present processing unit can provide the dot product of two complex vectors or the like.

摘要翻译： 所述处理单元包括至少一个复数乘法器，其具有用于乘以两个复矢量的实分量和虚分量的小时乘法电路，并组合乘积以产生复输出矢量。 通过（A + jB）和（C + jD）表示输入复矢量，输出复矢量变为（AC-BD）+ j（BC + AD）。 可以将组合电路切换成使得输入复矢量中的一个被共轭，并且输出复矢量变为（AC + BD）+ j（BC-AD）。 因此，本处理单元可以提供两个复矢量等的点积。

公开(公告)号：US4243955A

公开(公告)日：1981-01-06

申请号：US920048

申请日：1978-06-28

申请人： Sam M. Daniel ,  Kenneth M. Peterson

发明人： Sam M. Daniel ,  Kenneth M. Peterson

IPC分类号： H03C1/52 ,  H04B1/12

CPC分类号： H03C1/52

摘要： A method and apparatus for suppressing carrier leakage components in a system for modulating a carrier with a selected signal wherein the carrier and a quadrature component of the carrier are weighted and summed with the modulated carrier to produce a component substantially equal and opposite in phase to the leakage component so that the summing substantially cancels or suppresses the leakage component.

摘要翻译： 一种用于抑制用于用所选信号调制载波的系统中的载波泄漏分量的方法和装置，其中载波和载波的正交分量被加权并与调制的载波相加以产生基本相等且与相位相反的分量 泄漏分量，使得求和基本上抵消或抑制泄漏分量。

公开(公告)号：US4236158A

公开(公告)日：1980-11-25

申请号：US22663

申请日：1979-03-22

申请人： Sam M. Daniel

发明人： Sam M. Daniel

IPC分类号： H01Q3/26 ,  H04B7/00

CPC分类号： H01Q3/2629

摘要： An adaptive antenna array including a main antenna and an auxiliary antenna with a steepest descent controller for deriving the optimal feedback gain to guarantee stable and rapid convergence of the weights comprising the weight vector w(t) to form a null in the direction of interference while having minimal effect on the main beam.

摘要翻译： 一种自适应天线阵列，包括主天线和具有最陡下降控制器的辅助天线，用于导出最佳反馈增益，以保证包含权重向量w（t）的权重的稳定和快速收敛，以在干扰方向上形成零，同时 对主梁的影响最小。

公开(公告)号：US4070675A

公开(公告)日：1978-01-24

申请号：US734699

申请日：1976-10-21

申请人： Sam M. Daniel ,  Eric Jerome Carlson

发明人： Sam M. Daniel ,  Eric Jerome Carlson

IPC分类号： G01S7/02 ,  G01S7/28 ,  G01S7/36 ,  G01S13/52 ,  H01Q1/00 ,  H01Q3/26 ,  H01Q21/06 ,  H04B7/00

CPC分类号： G01S7/2813 ,  H01Q1/00 ,  H01Q21/06 ,  H01Q3/2635

摘要： The present invention involves the use of an adaptive power injection apparatus with an existing antenna having a radiation pattern characterized by a relatively narrow main beam and a plurality of low level sidelobes for the purpose of enhancing the performance of the main antenna in a jamming evironment. The said apparatus consists of an adaptive subarray constrained to maintain a null in the direction of the main beam of the existing antenna. More specifically, the said adaptive array is composed of several individual antennae having relatively wide-beam patterns and combined with the existing antenna through individual IF stages all identical to the IF stage of the existing antenna, individual phase shifters which provide phases necessary for maximum reception from the direction of the main beam of the existing antenna and individual adjustable weights. The weights, which may consist of voltage controlled amplifiers or equivalent devices are adjusted by means of individual signals derived from correlating each corresponding auxilliary antenna signal with the combined signal at the output of the summing network and subsequently subtracting each such signal from the overall average. Setting the weights originally to have a zero average value creates a null in the direction of the main beam. Consequently, subsequent weight adjustments by means of individual adjusting signals whose combined average is zero will maintain the null in the said direction. In an MTI application, the apparatus described would leave the main beam practically intact while serving, at the same time, to mimimize interferring sidelobe power. Thus avoiding undesirable amplitude modulation of the main beam signals that would otherwise arise without the presence of the constrained null.

摘要翻译： 本发明涉及使用具有现有天线的自适应功率注入装置，其具有以相对窄的主波束和多个低电平旁瓣为特征的辐射图，以便在干扰环境中增强主天线的性能。 所述装置包括被限制为在现有天线的主波束的方向上保持零的自适应子阵列。 更具体地说，所述自适应阵列由具有相对宽波束图案的几个单独天线组成，并且通过与现有天线的IF级相同的各个IF级与现有天线组合，各个移相器提供最大接收所需的相位 从现有天线的主波束的方向和各个可调节的重量。 可以由电压控制放大器或等效设备组成的权重通过从每个对应的辅助天线信号与求和网络的输出处的组合信号相关而导出的各个信号进行调整，然后从总平均值中减去每个这样的信号。 将原始设置为具有零平均值的权重在主梁的方向上创建一个零点。 因此，通过组合平均值为零的各个调整信号进行后续的权重调整将保持在所述方向上的零。 在MTI应用中，所描述的装置将在服务期间保持主波束几乎完整，同时使得干扰旁瓣功率成为可能。 因此避免了在不存在受限零的情况下将会出现的主波束信号的不期望的幅度调制。

公开(公告)号：US4353119A

公开(公告)日：1982-10-05

申请号：US159027

申请日：1980-06-13

申请人： Sam M. Daniel ,  Louis A. McRoberts

发明人： Sam M. Daniel ,  Louis A. McRoberts

IPC分类号： H01Q3/26 ,  H04B7/00 ,  G06F15/20

CPC分类号： H01Q3/2635

摘要： A directional main antenna and N omnidirectional auxiliary antennas connected to each supply an m-sample batch of signals to apparatus for developing a weighting vector 2 through Batch Covariance Relaxation apparatus, which weighting vector is then used to weight the signals from the auxiliary antennas and the weighted outputs are summed with the signal from the main antenna to suppress undesired sidelobe interferences. The processor includes apparatus performing complex vector dot product multiplication, dividing apparatus, apparatus for adding or subtracting to provide the recursive updating of vectors and memories for storing the various signals between operations.

摘要翻译： 连接到每个主定向天线和N个全向辅助天线，通过批量协方差松弛装置向装置发送加权矢量2的信号的m个采样批次，然后使用加权矢量对来自辅助天线的信号进行加权， 加权输出与来自主天线的信号相加以抑制不期望的旁瓣干扰。 处理器包括执行复矢量积积乘法的装置，分割装置，用于加法或减法的装置，以提供向量的递归更新和用于在操作之间存储各种信号的存储器。

公开(公告)号：US07450741B2

公开(公告)日：2008-11-11

申请号：US10873790

申请日：2004-06-22

申请人： Sam M. Daniel ,  Peter Z. Lo ,  Harshawardhan M. Wabgaonkar

发明人： Sam M. Daniel ,  Peter Z. Lo ,  Harshawardhan M. Wabgaonkar

IPC分类号： G06K9/00

CPC分类号： G06K9/00087

摘要： A method for comparing a first print image having a first set of minutiae to a second print image having a second set of minutiae, wherein at least a second subset of minutiae from the second set is mated to a first subset of minutiae from the first set, the method that includes the steps of: selecting (350) a first pair of minutiae from the first subset and a second pair of corresponding mated minutiae from the second subset; generating (350) a first segment based on the first pair of minutiae and a second segment based on the second pair of minutiae; generating (360) a first cross-section profile based on the first segment and a second cross-section profile based on the second segment; and computing (365) at least one similarity measure that is indicative of the similarity between the first cross-section profile and the second cross-section profile.

摘要翻译： 一种用于将具有第一组细节的第一打印图像与具有第二组细节的第二打印图像进行比较的方法，其中来自第二组的至少第二细节细节与第一组的细节的第一子集相配合 该方法包括以下步骤：从第一子集中选择（350）第一对细节，并从第二子集中选择第二对相应的配对细节; 基于所述第一对细节生成（350）第一片段和基于所述第二对细节的第二片段; 基于所述第一段产生（360）第一横截面轮廓和基于所述第二段的第二横截面轮廓; 以及计算（365）指示所述第一截面轮廓和所述第二横截面轮廓之间的相似度的至少一个相似性度量。

公开(公告)号：US4335372A

公开(公告)日：1982-06-15

申请号：US134859

申请日：1980-03-28

申请人： Maurice B. Aufderheide ,  Sam M. Daniel

发明人： Maurice B. Aufderheide ,  Sam M. Daniel

IPC分类号： G06F5/01 ,  G06F3/00

CPC分类号： G06F5/015

摘要： Digital scaling apparatus adapted to receive a plurality of digital signals each composed of a plurality of bits which first encodes each of the digital signals in accordance with the number of left shifts possible in each signal without losing any data, and then compares the encoded signals to select the largest digital signal, which selected encoded signal is used as a command to shift all of the digital signals an amount necessary to left justify the largest digital signal.

摘要翻译： 数字缩放装置，适于接收多个数字信号，每个数字信号由多个位组成，每个位首先根据每个信号中可能的左移位的数量对每个数字信号进行编码，而不会丢失任何数据，然后将编码的信号与 选择最大的数字信号，所选择的编码信号用作将所有数字信号的所有数字移位到最大数字信号左边所需的量。

公开(公告)号：US4286268A

公开(公告)日：1981-08-25

申请号：US29805

申请日：1979-04-13

申请人： Sam M. Daniel ,  Michael H. Myers

发明人： Sam M. Daniel ,  Michael H. Myers

IPC分类号： H01Q3/26 ,  H01Q21/29 ,  H04B1/10

CPC分类号： H01Q21/29 ,  H01Q3/2605 ,  H01Q3/2635

摘要： An adaptive antenna array including a main antenna and at least one auxiliary antenna with a plurality of weight adjusting channels and circuitry for adjusting the gain of each channel periodically switched into each channel, and each channel further including memory means for continued gradient control during period that the circuit is connected to other channels.

摘要翻译： 一种自适应天线阵列，包括主天线和至少一个具有多个权重调整信道的辅助天线和用于调整周期性切换到每个信道的每个信道的增益的电路，并且每个信道还包括用于在周期期间进行连续梯度控制的存储装置 电路连接到其他通道。