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    • 1. 发明授权
    • Method and system for concatenation of radar pulses
    • 用于雷达脉冲串联的方法和系统
    • US07773028B2
    • 2010-08-10
    • US11832973
    • 2007-08-02
    • Tony Meng Yuen ChanMark Gerecke
    • Tony Meng Yuen ChanMark Gerecke
    • G01S13/12G01S13/10G01S13/24G01S7/28G01S13/00G01S7/02
    • G01S13/24G01S7/282G01S13/225G01S13/30G01S15/102
    • A system and method are described for generating waveforms for use in radar and sonar systems. The system includes waveform generation circuitry a waveform generator and an up-conversion module. The waveform generator generates concatenated pulse waveforms at an IF band. In a given pulse repetition interval (PRI), the concatenated pulse waveforms comprise a first and second pulse types associated with first and second IF frequencies respectively. The up-conversion module up-converts the concatenated pulse waveforms to an RF band to form first and second sets of pulses. In the given PRI, each pulse is up-converted to a different RF frequency, pulses of different lengths are associated with a similar carrier frequency, and at least one pulse from each of the sets of pulses implements frequency diversity.
    • 描述了用于生成用于雷达和声纳系统的波形的系统和方法。 该系统包括波形发生电路,波形发生器和上变频模块。 波形发生器在IF频带产生串联脉冲波形。 在给定脉冲重复间隔(PRI)中,级联脉冲波形分别包括与第一和第二IF频率相关联的第一和第二脉冲类型。 上变频模块将级联的脉冲波形上变频为RF频带,以形成第一和第二组脉冲。 在给定的PRI中,每个脉冲被上转换成不同的RF频率,不同长度的脉冲与相似的载波频率相关联,并且来自每组脉冲的至少一个脉冲实现频率分集。
    • 2. 发明申请
    • METHOD AND SYSTEM FOR CONCATENATION OF RADAR PULSES
    • 雷达脉冲串联方法与系统
    • US20080136704A1
    • 2008-06-12
    • US11832973
    • 2007-08-02
    • Tony Meng Yuen ChanMark Gerecke
    • Tony Meng Yuen ChanMark Gerecke
    • G01S7/28G01S13/00H04B1/40
    • G01S13/24G01S7/282G01S13/225G01S13/30G01S15/102
    • A system and method are described for generating waveforms for use in radar and sonar systems. The system includes waveform generation circuitry a waveform generator and an up-conversion module. The waveform generator generates concatenated pulse waveforms at an IF band. In a given pulse repetition interval (PRI), the concatenated pulse waveforms comprise a first and second pulse types associated with first and second IF frequencies respectively. The up-conversion module up-converts the concatenated pulse waveforms to an RF band to form first and second sets of pulses. In the given PRI, each pulse is up-converted to a different RF frequency, pulses of different lengths are associated with a similar carrier frequency, and at least one pulse from each of the sets of pulses implements frequency diversity.
    • 描述了用于生成用于雷达和声纳系统的波形的系统和方法。 该系统包括波形发生电路,波形发生器和上变频模块。 波形发生器在IF频带产生串联脉冲波形。 在给定脉冲重复间隔(PRI)中,级联脉冲波形分别包括与第一和第二IF频率相关联的第一和第二脉冲类型。 上变频模块将级联的脉冲波形上变频为RF频带,以形成第一和第二组脉冲。 在给定的PRI中,每个脉冲被上转换成不同的RF频率,不同长度的脉冲与相似的载波频率相关联,并且来自每组脉冲的至少一个脉冲实现频率分集。
    • 3. 发明申请
    • SELECTABLE LOCAL OSCILLATOR
    • 可选择本地振荡器
    • US20100127788A1
    • 2010-05-27
    • US12277530
    • 2008-11-25
    • Tony Meng Yuen Chan
    • Tony Meng Yuen Chan
    • H03J7/04
    • H03B21/02
    • A selectable local oscillator provides an output frequency signal having a selectable frequency within a desired output frequency range. The selectable local oscillator comprises first, second and third signal generators configured to provide first, second and third frequency signals having frequencies in first, second and third input frequency ranges. A first mixer provides a first mixed product signal having an upper sideband and a lower sideband. A frequency selector selects one of the upper and lower sidebands of the first mixed product signal. A second mixer provides a second mixed product signal having an upper sideband and a lower sideband. An output stage selects at least one of the upper and lower sidebands of the second mixed product signal as the output frequency signal.
    • 可选择的本地振荡器在期望的输出频率范围内提供具有可选频率的输出频率信号。 可选择本地振荡器包括被配置为提供在第一,第二和第三输入频率范围内具有频率的第一,第二和第三频率信号的第一,第二和第三信号发生器。 第一混合器提供具有上边带和下边带的第一混合产品信号。 频率选择器选择第一混合乘积信号的上边带和下边带之一。 第二混合器提供具有上边带和下边带的第二混合产品信号。 输出级选择第二混合乘积信号的上边带和下边带中的至少一个作为输出频率信号。
    • 4. 发明授权
    • Selectable local oscillator
    • 可选本地振荡器
    • US07928808B2
    • 2011-04-19
    • US12277530
    • 2008-11-25
    • Tony Meng Yuen Chan
    • Tony Meng Yuen Chan
    • H03B21/00H03B21/01H03B21/02
    • H03B21/02
    • A selectable local oscillator provides an output frequency signal having a selectable frequency within a desired output frequency range. The selectable local oscillator comprises first, second and third signal generators configured to provide first, second and third frequency signals having frequencies in first, second and third input frequency ranges. A first mixer provides a first mixed product signal having an upper sideband and a lower sideband. A frequency selector selects one of the upper and lower sidebands of the first mixed product signal. A second mixer provides a second mixed product signal having an upper sideband and a lower sideband. An output stage selects at least one of the upper and lower sidebands of the second mixed product signal as the output frequency signal.
    • 可选择的本地振荡器在期望的输出频率范围内提供具有可选频率的输出频率信号。 可选择本地振荡器包括被配置为提供在第一,第二和第三输入频率范围内具有频率的第一,第二和第三频率信号的第一,第二和第三信号发生器。 第一混合器提供具有上边带和下边带的第一混合产品信号。 频率选择器选择第一混合乘积信号的上边带和下边带之一。 第二混合器提供具有上边带和下边带的第二混合产品信号。 输出级选择第二混合乘积信号的上边带和下边带中的至少一个作为输出频率信号。