Common receive module for a programmable digital radio
    1.
    发明授权
    Common receive module for a programmable digital radio 失效
    用于可编程数字无线电的通用接收模块

    公开(公告)号:US5859878A

    公开(公告)日:1999-01-12

    申请号:US528206

    申请日:1995-08-31

    摘要: A digital submodule is included in a software programmable common receive module for receiving IF signals and producing a serial bit stream. The digital submodule is programmable based on a selected application of a plurality of radio applications and, if present, a selected function of a plurality of functions of the selected radio application. The digital submodule may include an analog to digital converter for converting IF signals received from an analog submodule into digital signals. The digital signals are supplied to a programmable signal processing unit which is configured, according to the selected radio application and, if present, the selected function, to perform control functions, processing and analysis of the digital signals and generate output signals. The output signals are then formatted by a formatting unit producing formatted digital signals. The formatted digital signals are then supplied to a system bus. The programmable signal processing unit may include a digital downconverter for selective use depending on the selected application of radio communication, for generating a base signal. Additionally, a central processing unit is included to perform further signal processing for selected radio application.

    摘要翻译: 数字子模块包括在用于接收IF信号并产生串行比特流的软件可编程公共接收模块中。 数字子模块可以基于多个无线电应用的选定应用以及(如果存在)所选择的无线电应用的多个功能的选定功能来编程。 数字子模块可以包括用于将从模拟子模块接收的IF信号转换为数字信号的模数转换器。 数字信号被提供给可编程信号处理单元,该可编程信号处理单元根据所选择的无线电应用和所选择的功能被配置,以执行数字信号的控制功能,处理和分析并产生输出信号。 然后通过产生格式化的数字信号的格式化单元格式化输出信号。 然后将格式化的数字信号提供给系统总线。 可编程信号处理单元可以包括用于选择性地使用的数字下变频器,这取决于所选择的无线电通信的应用,用于产生基本信号。 另外,包括中央处理单元以对选定的无线电应用执行进一步的信号处理。

    Common transmit module for a programmable digital radio
    2.
    发明授权
    Common transmit module for a programmable digital radio 失效
    用于可编程数字无线电的通用发射模块

    公开(公告)号:US5867535A

    公开(公告)日:1999-02-02

    申请号:US522058

    申请日:1995-08-31

    摘要: A common transmit module of a programmable digital radio has a digital submodule which receives a bit stream and produces a modulated IF signal, and an analog submodule which receives the modulated IF signal and converts the modulated IF signal to a frequency corresponding to a specific type of radio function. The digital submodule includes (a) a sequential/parallel instruction set processor for signal processing and control, (b) a reconfigurable format unit, and (c) a modulator which receives the output signals of the reconfigurable format unit and produces the modulated oscillation signal. The analog submodule includes (a) a tunable local oscillator that produces a tunable local oscillation signal, (b) fixed local oscillators that produce fixed local oscillation signals, and (c) a mixing unit that receives the modulated IF signal, the tunable local oscillation signal and the fixed local oscillation signals, selectively mixes the fixed local oscillation signals with the modulated oscillation signal to produce non-final IF signals, and mixes a non-final IF signal with the tunable local oscillation signal to produce a final converted signal for transmission at the frequency corresponding to the specific type of radio function.

    摘要翻译: 可编程数字无线电的公共发射模块具有数字子模块,其接收比特流并产生调制的IF信号,以及模拟子模块,其接收调制的IF信号并将调制的IF信号转换成对应于特定类型的 收音功能。 数字子模块包括(a)用于信号处理和控制的顺序/并行指令集处理器,(b)可重构格式单元,以及(c)调制器,其接收可重构格式单元的输出信号并产生调制振荡信号 。 模拟子模块包括(a)产生可调谐本地振荡信号的可调谐本地振荡器,(b)产生固定本地振荡信号的固定本地振荡器,以及(c)接收调制IF信号的混合单元,可调谐的本地振荡 信号和固定的本地振荡信号,选择性地将固定的本地振荡信号与调制的振荡信号混频以产生非最终的IF信号,并且将非最终IF信号与可调本地振荡信号混合以产生用于传输的最终转换信号 在对应于特定类型的无线电功能的频率。

    Digitally programmable multifunction radio system architecture
    4.
    发明授权
    Digitally programmable multifunction radio system architecture 失效
    数字可编程多功能无线电系统架构

    公开(公告)号:US6072994A

    公开(公告)日:2000-06-06

    申请号:US522050

    申请日:1995-08-31

    摘要: A system that partitions or divides the functions of a radio into channels and divides the functions of each channel into two major functions: 1) antenna interface and power amplification; and 2) hardwired mixing, modulation/demodulation and signal processing and further partitions the mixing through signal processing functions into the functions of a) programmable analog mixing and b) programmable digital modulation/demodulation and signal processing. Control and user interface functions, if needed for a particular application can also be functionally partitioned. A typical received signal pathway will encounter an antenna module, an antenna interface and power amplification module, a receiver module partitioned into an analog submodule that performs mixing and down conversion to produce a common intermediate frequency signal and a digital submodule that further down converts the intermediate frequency signal, demodulates the signal and performs the other signal processing necessary to provide a useful information signal. A typical transmitter pathway includes a transmitter module partitioned into a digital submodule that performs signal processing and modulation and an analog submodule that performs upconversion and mixing, followed by a power amplification and interface module and an antenna module. Control and user interface modules can also be provided along with modules that perform additional processing and information security functions.

    摘要翻译: 将无线电功能分为或分为通道并将每个通道的功能划分为两个主要功能的系统:1)天线接口和功率放大; 和2)硬连线混合,调制/解调和信号处理,并通过信号处理功能将混合分为以下功能:a)可编程模拟混合和b)可编程数字调制/解调和信号处理。 控制和用户界面功能,如果需要特定的应用程序也可以进行功能划分。 典型的接收信号路径将会遇到天线模块,天线接口和功率放大模块,分为模拟子模块的接收机模块,进行混合和下变频以产生公共中频信号,数字子模块进一步向下转换中间 对信号进行解调并执行提供有用信息信号所必需的其他信号处理。 典型的发射机路径包括被分成数字子模块进行信号处理和调制的发射机模块以及执行上变频和混频的模拟子模块,其次是功率放大和接口模块和天线模块。 控制和用户界面模块也可以与执行附加处理和信息安全功能的模块一起提供。

    Digitally programmable radio modules for transponder systems
    5.
    发明授权
    Digitally programmable radio modules for transponder systems 失效
    用于应答器系统的数字可编程无线电模块

    公开(公告)号:US5712628A

    公开(公告)日:1998-01-27

    申请号:US522059

    申请日:1995-08-31

    摘要: A programmable digital radio is configured to perform transponder functions. A receiver in the programmable digital radio receives analog signals from an interrogator and digitizes the analog signals to produce digital interrogation signals. The digital interrogation signals are processed digitally and valid interrogations are detected. Processing includes detection of pulses, determination of each pulse's threshold, determination of intervals between pulses and whether the intervals meet mode criteria, and determination of priority of output of digital messages encoded in the pulses. At least one message is supplied to a transmit module in the programmable radio. The transmit module performs diversity processing on the received message to determine to which received signal to reply, produces reply data and modulates the reply data to produce intermediate frequency signals. The intermediate frequency signals are then converted to analog signals which are transmitted to the interrogator.

    摘要翻译: 可编程数字无线电被配置为执行应答器功能。 可编程数字无线电接收机接收来自询问器的模拟信号,并对模拟信号进行数字化以产生数字询问信号。 数字询问信号被数字处理,检测到有效的询问。 处理包括检测脉冲,确定每个脉冲的阈值,确定脉冲之间的间隔以及间隔是否满足模式准则,以及确定在脉冲中编码的数字消息的输出的优先级。 至少一个消息被提供给可编程无线电中的发射模块。 发送模块对接收到的消息执行分集处理,以确定哪个接收到的信号应答,产生应答数据并且调制应答数据以产生中频信号。 然后将中频信号转换成传送给询问器的模拟信号。

    Fir interpolator with zero order hold and fir-spline interpolation
combination
    7.
    发明授权
    Fir interpolator with zero order hold and fir-spline interpolation combination 失效
    具有零级保持和冷杉样条插值组合的Fir内插器

    公开(公告)号:US5732107A

    公开(公告)日:1998-03-24

    申请号:US522049

    申请日:1995-08-31

    IPC分类号: H03H17/06 H04K1/02

    CPC分类号: H03H17/028

    摘要: A FIR interpolator which uses a zero order hold to add samples in-between original samples of a digital input stream. The use of zero order hold with a FIR interpolator reduces output harmonics as compared to the use of conventional zero fill. Moreover, a computation method has been developed to greatly reduce the amount of computation needed by combining the zero order hold and the FIR filter. The output of the FIR interpolator can then be interpolated by a Spline interpolator to further interpolate the input stream. The combination of zero order hold FIR interpolation with Spline interpolation provides an efficient, cost effective technique of interpolating a digital input stream while producing relatively small output harmonics.

    摘要翻译: FIR内插器,其使用零级保持来在数字输入流的原始样本之间添加样本。 与使用常规零填充相比,使用FIR插值器的零级保持降低输出谐波。 此外,已经开发了一种计算方法,以大大减少组合​​零阶保持和FIR滤波器所需的计算量。 然后可以通过样条插值器对FIR插值器的输出进行插值,以进一步内插输入流。 使用样条插值的零级保持FIR插值的组合提供了内插数字输入流同时产生相对小的输出谐波的高效,成本有效的技术。

    Method and apparatus for registering two images from different sensors
    8.
    发明授权
    Method and apparatus for registering two images from different sensors 失效
    用于从不同传感器注册两张图像的方法和装置

    公开(公告)号:US5274236A

    公开(公告)日:1993-12-28

    申请号:US991808

    申请日:1992-12-16

    摘要: A method and apparatus for registering two images from different sensors including receiving a first and second image, detecting hot spots in the first and second images, respectively, pairing each of the hot spots in the first image with all the hot spots in the second image that are within a predetermined mapping distance to produce a mapping between the hot spots of the first and second images, refining the mapping produced by selecting one of the hot spots of the second image for each of the hot spots of the first image utilizing a least mean squares method, producing a registered image from the refined mapping, and outputting the registered image.

    摘要翻译: 一种用于从不同传感器记录两个图像的方法和装置,包括接收第一和第二图像,分别检测第一和第二图像中的热点,将第一图像中的每个热点与第二图像中的所有热点配对 它们在预定的映射距离内,以产生第一和第二图像的热点之间的映射,通过使用最少的第一图像的每个热点来选择第二图像的热点之一,从而精炼出映射 均方法,从精确映射产生注册图像,并输出注册图像。