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1. 发明授权

US06903679B2 Video amplifier for a radar receiver 有权
标题翻译：雷达接收机的视频放大器
公开(公告)号：US06903679B2
公开(公告)日：2005-06-07
申请号：US09931593
申请日：2001-08-16
申请人： James T. Hanson , Walter Gordon Woodington , Michael Joseph Delcheccolo , Joseph S. Pleva , Mark E. Russell , H. Barteld Van Rees
发明人： James T. Hanson , Walter Gordon Woodington , Michael Joseph Delcheccolo , Joseph S. Pleva , Mark E. Russell , H. Barteld Van Rees
IPC分类号： B60R21/00 , B60K31/00 , B60Q1/26 , B60Q1/52 , G01S7/02 , G01S7/03 , G01S7/26 , G01S7/285 , G01S7/288 , G01S7/35 , G01S7/40 , G01S13/02 , G01S13/04 , G01S13/28 , G01S13/34 , G01S13/48 , G01S13/58 , G01S13/72 , G01S13/87 , G01S13/89 , G01S13/93 , H01Q1/32 , H01Q1/38 , H01Q1/42 , H01Q3/24 , H01Q3/26 , H01Q3/40 , H01Q13/06 , H01Q13/10 , H01Q21/00 , H01Q21/06 , H01Q25/00 , H03F1/30 , H03H7/01 , H03H21/00 , G01S13/00 , G01S7/00
CPC分类号： B60Q9/008 , B60K31/0008 , B60T2201/08 , B60T2201/081 , B60T2201/088 , B60W2530/10 , B60W2550/304 , G01S7/023 , G01S7/032 , G01S7/038 , G01S7/06 , G01S7/288 , G01S7/352 , G01S7/354 , G01S7/4004 , G01S7/4008 , G01S7/4021 , G01S13/04 , G01S13/282 , G01S13/343 , G01S13/346 , G01S13/48 , G01S13/584 , G01S13/726 , G01S13/87 , G01S13/931 , G01S2007/356 , G01S2013/0245 , G01S2013/9321 , G01S2013/9332 , G01S2013/9375 , G01S2013/9378 , G01S2013/9385 , G01S2013/9389 , H01Q1/3233 , H01Q1/3258 , H01Q1/3283 , H01Q1/38 , H01Q1/42 , H01Q3/24 , H01Q3/40 , H01Q13/10 , H01Q13/18 , H01Q21/0043 , H01Q21/0075 , H01Q21/0087 , H01Q21/065 , H01Q25/00
摘要： A video amplifier for a radar receiver includes a temperature compensating attenuator. The attenuator includes a temperature sensitive device, such as a thermistor, arranged in a voltage divider network and is coupled in cascade between two filter stages. Each of the filter stages has a bandpass characteristic in order to filter low-frequency leakage signals and provide sensitivity control based on frequency and thus range, while also filtering high frequency signals to reduce aliasing.
摘要翻译：用于雷达接收机的视频放大器包括温度补偿衰减器。衰减器包括布置在分压网络中的温度敏感器件，例如热敏电阻，并且在两个滤波器级之间级联连接。每个滤波器级具有带通特性，以便滤除低频泄漏信号，并提供基于频率和范围的灵敏度控制，同时还对高频信号进行滤波以减少混叠。

2. 发明授权

US06707419B2 Radar transmitter circuitry and techniques 有权
标题翻译：雷达发射机电路和技术
公开(公告)号：US06707419B2
公开(公告)日：2004-03-16
申请号：US09931636
申请日：2001-08-16
申请人： Walter Gordon Woodington , Michael Joseph Delcheccolo , Joseph S. Pleva , Mark E. Russell , H. Barteld Van Rees , James T. Hanson
发明人： Walter Gordon Woodington , Michael Joseph Delcheccolo , Joseph S. Pleva , Mark E. Russell , H. Barteld Van Rees , James T. Hanson
IPC分类号： G01S735
CPC分类号： B60Q9/008 , B60K31/0008 , B60T2201/08 , B60T2201/081 , B60T2201/088 , B60W2530/10 , B60W2550/304 , G01S7/023 , G01S7/032 , G01S7/038 , G01S7/06 , G01S7/288 , G01S7/352 , G01S7/354 , G01S7/4004 , G01S7/4008 , G01S7/4021 , G01S13/04 , G01S13/282 , G01S13/343 , G01S13/346 , G01S13/48 , G01S13/584 , G01S13/726 , G01S13/87 , G01S13/931 , G01S2007/356 , G01S2013/0245 , G01S2013/9321 , G01S2013/9332 , G01S2013/9375 , G01S2013/9378 , G01S2013/9385 , G01S2013/9389 , H01Q1/3233 , H01Q1/3258 , H01Q1/3283 , H01Q1/38 , H01Q1/42 , H01Q3/24 , H01Q3/40 , H01Q13/10 , H01Q13/18 , H01Q21/0043 , H01Q21/0075 , H01Q21/0087 , H01Q21/065 , H01Q25/00
摘要： A radar transmitter includes a digital ramp generator circuit for generating a VCO control signal. The ramp generator includes a digital signal processor and a digital-to-analog converter. In one embodiment, the VCO output signal is up-converted to provide the transmit signal and in another embodiment, the VCO operates over the transmit frequency. Also described is a VCO comprising a DR and a phase shifter. A temperature compensation feature includes detecting the transmit frequency and comparing the DSP output generating the detected frequency to a DSP output stored in association with the detected frequency. Also described is a technique for compensating for non-linear VCO operation in which the DSP output words are adjusted to provide a waveform complementary in shape to the non-linear VCO characteristic. Susceptibility of the radar to interference is reduced by randomly varying at least one parameter of the ramp signal, such as offset interval or voltage range, in at least one ramp signal cycle.
摘要翻译：雷达发射器包括用于产生VCO控制信号的数字斜坡发生器电路。斜坡发生器包括数字信号处理器和数 - 模转换器。在一个实施例中，VCO输出信号被上变频以提供发射信号，而在另一个实施例中，VCO在发射频率上工作。还描述了包括DR和移相器的VCO。温度补偿功能包括检测发射频率并将产生检测到的频率的DSP输出与检测到的频率相关联地存储的DSP输出进行比较。还描述了一种用于补偿其中DSP输出字被调整以提供与非线性VCO特性形状互补的波形的非线性VCO操作的技术。在至少一个斜坡信号周期中，通过随机地改变斜坡信号的至少一个参数（诸如偏移间隔或电压范围）来降低雷达对干扰的敏感性。

3. 发明授权

US06549158B1 Shipboard point defense system and elements therefor 失效
标题翻译：舰载点防御系统及其元素
公开(公告)号：US06549158B1
公开(公告)日：2003-04-15
申请号：US05823892
申请日：1977-07-28
申请人： James T. Hanson
发明人： James T. Hanson
IPC分类号： G01S7285
CPC分类号： F41G7/2246 , F41G7/2206 , F41G7/2286 , G01S7/03 , G01S7/285 , G01S13/225 , G01S13/30 , G01S13/426 , G01S13/4463 , G01S13/449 , G01S13/72 , G01S13/78 , G01S13/86 , G01S13/87 , G01S2013/0272
摘要： A combined defense and navigational system on a naval Vessel is disclosed. The disclosed system includes a track-while-scan pulse radar which is controlled to provide either navigational information or tracking information on selected targets. Additionally, the disclosed system includes a plurality of guided missiles, each of which may be vertically launched and directed toward intercept of a selected target either by commands from the track-while-scan radar or from an active guidance system in each such missile.
摘要翻译：披露了海军舰艇的综合防御和导航系统。所公开的系统包括跟踪扫描脉冲雷达，其被控制以提供关于所选目标的导航信息或跟踪信息。另外，所公开的系统包括多个导弹，每个导弹可以垂直地发射并且通过来自扫描轨道的雷达或每个这样的导弹中的主动引导系统的命令指向所选目标的拦截。

4. 发明授权

US6057798A Apparatus and method for frequency modulation 失效
标题翻译：用于频率调制的装置和方法
公开(公告)号：US6057798A
公开(公告)日：2000-05-02
申请号：US719021
申请日：1985-01-18
申请人： Richard W. Burrier , James T. Hanson
发明人： Richard W. Burrier , James T. Hanson
IPC分类号： G01S7/35 , G01S13/34 , G01S7/28
CPC分类号： G01S13/34 , G01S13/342 , G01S7/35
摘要： A method and apparatus for frequency modulating a continuous wave signal is shown to comprise a voltage-controlled oscillator (VCO) having a first and a second control loop to maintain the carrier frequency of such VCO at a frequency determined by a crystal-controlled oscillator and to maintain the peak deviation of the FM modulation on such carrier frequency at a value equal to the deviation of the first Bessel null from the carrier frequency.
摘要翻译：示出了用于频率调制连续波信号的方法和装置，其包括具有第一和第二控制环路的压控振荡器（VCO），以将这种VCO的载波频率保持在由晶体振荡器确定的频率，以将这种载波频率上的FM调制的峰值偏差保持在等于第一贝塞尔零点与载波频率的偏差的值。

5. 发明授权

US6005446A Microwave frequency synthesizer 失效
标题翻译：微波频率合成器
公开(公告)号：US6005446A
公开(公告)日：1999-12-21
申请号：US942712
申请日：1997-10-01
申请人： Zvi Galani , James T. Hanson
发明人： Zvi Galani , James T. Hanson
IPC分类号： H03B21/02
CPC分类号： H03B21/02
摘要： An apparatus and method for synthesizing low-noise, high stability, multi-frequency microwave signals is disclosed. The output frequencies of a lower frequency, low-noise, synthesizer are upconverted to higher microwave frequencies by mixing these frequencies with the output frequency of an ultra low noise microwave oscillator, determined by a very high Q resonator. Such resonators exhibit large frequency dependence on temperature, but the frequency of an ultra low noise microwave oscillator cannot be stabilized by phase-lock to a stable reference because of its very narrow voltage-controlled frequency tuning range, caused by the very high Q of the resonator. The microwave synthesizer output frequency stabilization is achieved by a novel phase-lock loop which uses the frequency tunability of a low noise SAW oscillator to compensate for the frequency drift of the microwave oscillator. The system does not require the very precise temperature control of a high Q resonator that otherwise would be needed to control the output frequency of a microwave synthesizer.
摘要翻译：公开了一种用于合成低噪声，高稳定性，多频微波信号的装置和方法。通过将这些频率与由超高Q谐振器确定的超低噪声微波振荡器的输出频率混合，将低频，低噪声合成器的输出频率上变频到更高的微波频率。这种谐振器对温度的频率依赖性很大，但是由于非常窄的电压控制频率调谐范围，超低噪声微波振荡器的频率不能通过锁相稳定到稳定的参考值，谐振器。微波合成器的输出频率稳定是通过一种新的锁相环实现的，该锁相环使用低噪声SAW振荡器的频率可调性来补偿微波振荡器的频率漂移。该系统不需要高Q谐振器的非常精确的温度控制，否则将需要它来控制微波合成器的输出频率。

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