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公开(公告)号:US4208632A
公开(公告)日:1980-06-17
申请号:US921628
申请日:1978-06-30
IPC分类号: H03F3/68 , G01S7/28 , G01S7/285 , G01S7/34 , G01S13/44 , G01S13/50 , H03G3/20 , G01S7/30 , H03K5/20
CPC分类号: H03G3/3073 , G01S7/28
摘要: An improved radar receiver is shown to include a plurality of intermediate frequency and video frequency amplifiers, each one of such amplifiers being arranged to process received signals within a different range of amplitudes so that the overall dynamic range of such receiver may be equivalent to the dynamic range of a conventional radar receiver with automatic gain control.
摘要翻译: 改进的雷达接收机被示为包括多个中频和视频放大器,这些放大器中的每一个被布置成处理在不同幅度范围内的接收信号,使得这种接收机的整体动态范围可以等同于动态 具有自动增益控制的常规雷达接收机的范围。
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公开(公告)号:US4652882A
公开(公告)日:1987-03-24
申请号:US431898
申请日:1982-09-30
CPC分类号: G01S13/4445 , G01S13/18 , G01S13/449 , G01S13/685 , G01S7/28
摘要: A monopulse receiver, wherein a desired wide dynamic range is achieved for range gated monopulse sum and difference signals, is shown to incorporate: (a) a multiplexer for time-multiplexing such signals; (b) a first and a second receiver channel responsive to the time-multiplexed signals, each such channel having a dynamic range less than the desired wide dynamic range and greater than one-half the desired wide dynamic range, the gains in such channels being offset so that together such channels have the desired dynamic range; (c) a first and a second sampler and analog-to-digital converter, respectively, responsive to the signals out of the first and the second receiver channel, for producing digital words indicative of the amplitude of each component signal in the time-multiplexed signals; and (d) logic and control means for forming bytes from predetermined portions of each one of the digital words and for selecting the byte indicative of the amplitude of each component signal.
摘要翻译: 示出了对于范围选通单脉冲和和差信号实现期望的宽动态范围的单脉冲接收机,其包括:(a)用于对这些信号进行时分复用的多路复用器; (b)响应于时间复用信号的第一和第二接收机通道,每个这样的信道具有小于期望的宽动态范围的动态范围并且大于所需宽动态范围的一半,这些信道中的增益是 偏移,使得这样的通道一起具有期望的动态范围; (c)分别响应于第一和第二接收机信道中的信号的第一和第二采样器和模数转换器,用于产生指示时分复用的每个分量信号的振幅的数字字 信号; 以及(d)用于从每个数字字的预定部分形成字节并用于选择表示每个分量信号的幅度的字节的逻辑和控制装置。
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公开(公告)号:US06630902B1
公开(公告)日:2003-10-07
申请号:US05823888
申请日:1977-07-28
IPC分类号: G01S1350
CPC分类号: F41G7/2246 , F41F3/04 , F41G7/2206 , F41G7/2286 , F42B10/64 , F42B15/01 , G01S7/03 , G01S13/225 , G01S13/30 , G01S13/426 , G01S13/4463 , G01S13/449 , G01S13/72 , G01S13/78 , G01S13/86 , G01S13/87 , G01S2013/0272
摘要: A radar receiver is shown wherein the frequency of a first local oscillator is changed to bring an intermediate frequency signal representative of a moving target into frequency coincidence with a signal from a reference oscillator of fixed frequency.
摘要翻译: 示出了雷达接收机,其中第一本地振荡器的频率被改变以使表示移动目标的中频信号与来自固定频率的参考振荡器的信号频率一致。
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