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    • 41. 发明授权
    • Multi-domain test and measurement instrument
    • 多域测试和测量仪器
    • US08521460B2
    • 2013-08-27
    • US12892774
    • 2010-09-28
    • Kenneth P. Dobyns
    • Kenneth P. Dobyns
    • G06F19/00
    • G01R13/0236G01R13/0272G01R23/16
    • A test and measurement instrument including an input port configured to receive an input signal; a digitizer configured to digitize the input signal; a decimator coupled to the digitizer and configured to decimate the digitized input signal to generate a decimated input signal; a digital downconverter coupled to the digitizer and configured to frequency shift the digitized input signal to generate a frequency shifted input signal; and a memory configured to store the decimated input signal and the frequency shifted input signal.
    • 一种测试和测量仪器,包括被配置为接收输入信号的输入端口; 配置为数字化输入信号的数字转换器; 一个抽取器,耦合到数字转换器并被配置为抽取数字化的输入信号以产生抽取的输入信号; 数字下变频器,耦合到所述数字转换器,并且被配置为对所述数字化输入信号进行频移,以产生频移输入信号; 以及被配置为存储抽取的输入信号和频移输入信号的存储器。
    • 42. 发明申请
    • SYSTEMS AND METHODS FOR SIGNAL DETECTION AND ESTIMATION
    • 用于信号检测和估计的系统和方法
    • US20130195226A1
    • 2013-08-01
    • US13361324
    • 2012-01-30
    • Ray MalehFrank A. BoyleGerald L. Fudge
    • Ray MalehFrank A. BoyleGerald L. Fudge
    • H04L27/06
    • G01R23/16
    • Systems and methods are disclosed for detecting and/or measuring signals contained in modulated sample data, and that may be implemented in one embodiment to detect and measure signals by producing a representation and/or visualization of the signal information of the wide band spectral environment. Signals may be detected and/or measured by demodulating and estimating signal spectra from the modulated sample data that contain the individual signals, and by then forming a frequency representation of the demodulated Nyquist zone spectral estimates into a visual representation in which the frequency of the original signals is visible or otherwise indicated.
    • 公开了用于检测和/或测量包含在调制样本数据中的信号的系统和方法,并且可以在一个实施例中实现以通过产生宽带频谱环境的信号信息的表示和/或可视化来检测和测量信号的系统和方法。 可以通过从包含单独信号的调制样本数据中解调和估计信号频谱,然后将解调的奈奎斯特频谱估计的频率表示形成视觉表示,来检测和/或测量信号,其中原始频率 信号是可见的或以其他方式指示。
    • 44. 发明申请
    • DETECTION OF SIGNALS
    • 检测信号
    • US20130113659A1
    • 2013-05-09
    • US13578484
    • 2011-02-10
    • David Morgan
    • David Morgan
    • G01R23/16G01S3/04G06F15/00
    • G01R23/16G01R29/0871G01S3/046G06F15/00
    • Described herein is a method and apparatus for the detection of signals in an area of interest. Three sensor channels are provided for sensing radiated emissions in an area of interest, each channel having a sensor and a processor, the three channels sensing radiated emissions in the very low frequency band, the high/very high frequency band, and the ultra high frequency band respectively. The first and third sensor channels provide input signals to the processor in the second sensor channel so that accumulated signal data can be processed to produce an input signal for a comparator. The comparator compares the input signal with data stored in a database to indicate presence of equipment having known modes of operation.
    • 这里描述了一种用于检测感兴趣区域中的信号的方法和装置。 提供三个传感器通道用于感测感兴趣区域中的辐射发射,每个通道具有传感器和处理器,三个通道检测极低频带中的辐射发射,高/非常高频带和超高频 频带。 第一和第三传感器通道在第二传感器通道中向处理器提供输入信号,使得可以处理累积的信号数据以产生用于比较器的输入信号。 比较器将输入信号与存储在数据库中的数据进行比较,以指示具有已知操作模式的设备的存在。
    • 47. 发明申请
    • APPARATUS AND METHOD FOR CONVERTING AN ANALOG TIME DOMAIN SIGNAL INTO A DIGITAL FREQUENCY DOMAIN SIGNAL, AND APPARATUS AND METHOD FOR CONVERTING AN ANALOG TIME DOMAIN SIGNAL INTO A DIGITAL TIME DOMAIN SIGNAL
    • 将模拟时域信号转换为数字频域信号的装置和方法,以及将模拟时域信号转换为数字时域信号的装置和方法
    • US20130039451A1
    • 2013-02-14
    • US13629220
    • 2012-09-27
    • Innovationszentrum fuer Telekommunikationstechn
    • Rainer PERTHOLD
    • H04B1/14
    • H03M1/0678G01R23/16H03M1/121
    • An apparatus for converting an analog signal into a digital signal includes: two identical analog-to-digital-converters converting the analog signal into first and second digital time domain signals; first and second transformation units transforming the first and second digital time domain signals into first and second digital frequency domain signals; a frequency compensation unit modifying the second frequency signal to reduce a difference between wanted signal components of the second and first frequency values caused by a difference between frequency responses of the analog-to-digital converters; a comparison unit determining for a same frequency bin corresponding first and second energy values associated to corresponding frequency values of the first and second digital frequency domain signal, and determining a minimum energy value thereof; and a selection unit selecting for a same frequency bin of the digital frequency domain signal the digital frequency domain signal associated to the minimum energy value.
    • 一种用于将模拟信号转换为数字信号的装置包括:将模拟信号转换为第一和第二数字时域信号的两个相同的模 - 数转换器; 第一和第二变换单元将第一和第二数字时域信号变换为第一和第二数字频域信号; 频率补偿单元,修改所述第二频率信号以减少由所述模数转换器的频率响应之间的差引起的所述第二和第一频率值的有用信号分量之间的差; 比较单元确定与第一和第二数字频域信号的对应频率值相关联的相应频率仓对应的第一和第二能量值,并确定其最小能量值; 并且选择单元选择数字频域的相同频率仓信号与最小能量值相关联的数字频域信号。
    • 48. 发明授权
    • Amplitude probability distribution measurement apparatus
    • 振幅概率分布测量装置
    • US08355467B2
    • 2013-01-15
    • US12730825
    • 2010-03-24
    • Sunao RonteSatoru Arakawa
    • Sunao RonteSatoru Arakawa
    • H04L27/00
    • G01R23/16
    • There is disclosed a general-purpose APD measurement apparatus capable of changing a measurement condition, such as the number of channels or a resolution bandwidth (RBW) in compliance with a standard for the subject of measurement, measuring various subjects of measurement, and correcting measurement equipment, thereby enabling a higher accuracy of measurement. The resolution bandwidth (RBW) or the number of channels when measurement is performed can be flexibly changed by controlling the cycle of a clock signal whose data are sampled by A/D conversion means 110, frequency selection means 130, and an APD unit 300. The frequency selection means 130 includes FFT type processing means 131 and filter bank type processing means 132 arranged in parallel. The output of FFT type processing means 131 is corrected based on the output of the filter bank type processing means 132 with a high accuracy of measurement. Accordingly, a higher accuracy of measurement is made possible.
    • 公开了一种通用APD测量装置,其能够根据测量对象的标准,测量各种测量对象和校正测量来改变诸如频道数量或分辨率带宽(RBW)的测量条件 设备,从而实现更高的测量精度。 通过控制通过A / D转换装置110,频率选择装置130和APD单元300对其数据进行采样的时钟信号的周期,可以灵活地改变执行测量时的分辨率带宽(RBW)或通道数。 频率选择装置130包括平行布置的FFT类型处理装置131和滤波器组类型处理装置132。 基于滤波器组型处理装置132的输出,以高精度的测量来校正FFT型处理装置131的输出。 因此,可以实现更高的测量精度。
    • 49. 发明授权
    • Realtime spectrum trigger system on realtime oscilloscope
    • 实时频谱触发系统实时示波器
    • US08233569B2
    • 2012-07-31
    • US11529855
    • 2006-09-28
    • Kan TanJohn J. Pickerd
    • Kan TanJohn J. Pickerd
    • H03D1/00
    • G01R13/0254G01R23/16
    • A realtime spectrum trigger system on a realtime oscilloscope considers both the magnitude and phase of an input signal having a periodic component so that successive acquisitions of the input signal are time aligned. A user inputs a frequency, threshold and phase for triggering on the periodic component. Input signal samples are filtered by quadrature filters according to the frequency input to produce quadrature signal components. The square of the magnitude of the input signal is computed from the quadrature signal components, as well as the phase ratio and sign, for comparison with calculated values. When enabled by the magnitude of the input signal, a phase crossing determinator compares the phase ratio and sign with calculated values to determine the phase crossing to generate a trigger, resulting in successive acquisitions of the input signal being in time alignment.
    • 实时示波器上的实时频谱触发系统考虑具有周期分量的输入信号的幅度和相位,使得输入信号的连续采集是时间对准的。 用户输入频率,阈值和相位以在周期性分量上触发。 输入信号样本根据频率输入由正交滤波器滤波,产生正交信号分量。 根据正交信号分量计算输入信号幅度的平方以及相位比和符号,以便与计算值进行比较。 当通过输入信号的幅度使能时,相位越过判定器将相位比和符号与计算值进行比较,以确定相位交叉以产生触发,从而导致输入信号在时间上对准的连续采集。