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1. 发明授权

US06836238B1 Police radar/laser detector with integral vehicle parameter display using a vehicle interface 有权
标题翻译：警察雷达/激光探测器，具有车辆界面的整体车辆参数显示
公开(公告)号：US06836238B1
公开(公告)日：2004-12-28
申请号：US10610367
申请日：2003-06-30
申请人： Steven K. Orr , John Kuhn , Jeffrey J. Clawson
发明人： Steven K. Orr , John Kuhn , Jeffrey J. Clawson
IPC分类号： G01S740
CPC分类号： G01S7/4806 , G01S7/022 , G01S7/04 , G01S7/38 , G01S7/4021 , G01S7/48 , G01S7/495 , G01S7/497 , G01S7/51 , G01S13/865 , G01S2007/52012 , G08G1/052
摘要： A method of factory calibrating a police radar/laser detector including a controller, an accelerometer, and a memory, by manipulating the detector to rotate the accelerometer, measuring and feeding real time measurements from the accelerometer to a Least Squares Elliptical Fit algorithm executed by the controller, applying the Least Squares Elliptical Fit algorithm to the real time measurements to find the equation of an ellipse formed by the measurements, storing the coefficients of the ellipse in the memory. The coefficients are then recalled from the memory to thereby calibrate the accelerometer.
摘要翻译：一种通过操纵检测器来旋转加速度计，测量并将实时测量从加速度计馈送到最小二乘椭圆拟合算法的工厂校准警察雷达/激光检测器的方法，包括控制器，加速度计和存储器，由控制器，将最小二乘椭圆拟合算法应用于实时测量，以找到通过测量形成的椭圆方程，将椭圆的系数存储在存储器中。然后从存储器中调用系数，从而校准加速度计。

2. 发明授权

US06803878B2 Methods and apparatus for terrain correlation 有权
标题翻译：地形相关的方法和装置
公开(公告)号：US06803878B2
公开(公告)日：2004-10-12
申请号：US10144877
申请日：2002-05-13
申请人： James R. Hager , James B. Oven , Jason I. Formo
发明人： James R. Hager , James B. Oven , Jason I. Formo
IPC分类号： G01S740
CPC分类号： G01S19/51 , G01S3/48 , G01S7/292 , G01S7/4004 , G01S13/18 , G01S13/42 , G01S13/70 , G01S13/86 , G01S13/882 , G01S13/94
摘要： A method for testing radar system performance is disclosed which utilizes radar data test points in a radar data file. The method includes interpolating GPS data from a flight test to provide a GPS data point for every radar data test point, generating body coordinate values for every point in a corresponding digital elevation map (DEM) file using the interpolated GPS data, and applying a bounding function around at least a portion of the body coordinate values generated from the DEM file at a given time. The method also includes determining which body coordinate value generated from the DEM file is closest a current GPS data point for the given time and comparing the determined body coordinate value to the radar data test points at the given time.
摘要翻译：公开了一种在雷达数据文件中使用雷达数据测试点的雷达系统性能测试方法。该方法包括内插来自飞行测试的GPS数据，为每个雷达数据测试点提供GPS数据点，使用内插GPS数据生成相应数字高程图（DEM）文件中每个点的身体坐标值，并应用边界围绕在给定时间从DEM文件生成的身体坐标值的至少一部分。该方法还包括确定在给定时间内从DEM文件生成的身体坐标值与当前GPS数据点最接近，并将确定的身体坐标值与给定时间的雷达数据测试点进行比较。

3. 发明授权

US06747595B2 Array antenna calibration apparatus and array antenna calibration method 有权
标题翻译：阵列天线校准装置和阵列天线校准方法
公开(公告)号：US06747595B2
公开(公告)日：2004-06-08
申请号：US10345974
申请日：2003-01-17
申请人： Masashi Hirabe
发明人： Masashi Hirabe
IPC分类号： G01S740
CPC分类号： H01Q3/267
摘要： An array antenna calibration apparatus simple in configuration and inexpensive while ensuring an accurate calibration of an array antenna is provided. This array antenna calibration apparatus includes supply means supplying original calibration signals to a plurality of antenna elements constituting an array antenna, the original calibration signals being orthogonal to one another among the antenna elements; a phase and amplitude characteristic calculation means calculating correlations between calibration signals, which are emitted from the antenna elements and received by the adjacent antenna elements, and the original calibration signals related to the received calibration signals; a relative calibration factor calculation means obtaining a relative calibration factor among all the antenna elements constituting the array antenna based on phase and amplitude characteristics of the respective antenna elements; and calibration means calibrating transmission signals to be supplied to the respective antenna elements based on the relative calibration factor.
摘要翻译：提供了简单的配置和便宜的阵列天线校准装置，同时确保阵列天线的精确校准。该阵列天线校准装置包括向组成阵列天线的多个天线元件提供原始校准信号的供电装置，原始校准信号在天线元件中彼此正交; 相位和幅度特性计算装置，用于计算从天线元件发射并由相邻天线元件接收的校准信号与与所接收的校准信号相关的原始校准信号之间的相关性; 相对校准因子计算装置基于各个天线元件的相位和幅度特性来获得构成阵列天线的所有天线元件之间的相对校准因子; 并且校准装置基于相对校准因子校准要提供给各个天线元件的传输信号。

4. 发明授权

US06747594B2 Calibration of differential frequency-dependent characteristics of a radio communications system 失效
标题翻译：校准无线电通信系统的差分频率相关特性
公开(公告)号：US06747594B2
公开(公告)日：2004-06-08
申请号：US10294948
申请日：2002-11-14
申请人： Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
发明人： Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
IPC分类号： G01S740
CPC分类号： H04B7/12 , H01Q3/267 , H04B7/0613 , H04B7/0837 , H04B17/12 , H04B17/21
摘要： A method and apparatus are provided that determine a frequency dependent calibration vector for a set of transmit or receive chains of a radio communications system using only differential phase and amplitude between the transmit chains and the receive chains, respectively. In one embodiment, the invention includes an antenna array adapted to transmit and receive radio communications signals with a plurality of other terminals, a transmit chain to transmit a calibration signal through the antenna array to a transponder on at least two different frequency bands, and a receive chain to receive through the antenna array a transponder signal from the transponder, the transponder signal being received on at least two different frequency bands and being based on the calibration signal. A signal processor determines a frequency dependent calibration vector based on the at least two frequency bands of the transponder signal as received through the receive chain by comparing relative characteristics for the transponder signal at a first one of the at least two frequencies to relative characteristics for the transponder signal at a second one of the at least two frequencies.
摘要翻译：提供了一种方法和装置，其分别仅使用发射链和接收链之间的差分相位和幅度来确定无线电通信系统的一组发射或接收链的频率相关校准矢量。在一个实施例中，本发明包括适于与多个其他终端发送和接收无线电通信信号的天线阵列，通过天线阵列将校准信号发射到至少两个不同频带上的应答器的发射链，以及接收链，以通过天线阵列接收来自应答器的应答器信号，应答器信号在至少两个不同频带上被接收并且基于校准信号。信号处理器基于通过接收链接收的应答器信号的至少两个频带来确定与频率相关的校准矢量，通过将在至少两个频率中的第一个频率上的应答器信号的相对特性相对于在所述至少两个频率中的第二个频率处的应答器信号。

5. 发明授权

US06744401B2 Methods and apparatus for radar data processing 有权
标题翻译：雷达数据处理方法和装置
公开(公告)号：US06744401B2
公开(公告)日：2004-06-01
申请号：US10144881
申请日：2002-05-13
申请人： James R. Hager , Jason I. Formo , Jens M. Henrickson
发明人： James R. Hager , Jason I. Formo , Jens M. Henrickson
IPC分类号： G01S740
CPC分类号： G01S13/86 , G01S3/48 , G01S7/292 , G01S7/4004 , G01S13/18 , G01S13/42 , G01S13/70 , G01S13/882 , G01S13/94
摘要： A method for testing a radar system utilizing flight test radar data is described. The method includes time synchronizing measured radar data with a GPS based time marker, storing at least a portion of the time synchronized radar data, storing the GPS data, processing the stored GPS data to correspond with a physical position of an antenna which received the radar data, providing a radar model, and comparing the processed radar model data to the stored radar data.
摘要翻译：描述了利用飞行试验雷达数据测试雷达系统的方法。该方法包括将测量的雷达数据与基于GPS的时间标记进行时间同步，存储时间同步雷达数据的至少一部分，存储GPS数据，处理存储的GPS数据以对应于接收雷达的天线的物理位置数据，提供雷达模型，并将经处理的雷达模型数据与存储的雷达数据进行比较。

6. 发明授权

US06741205B2 Monopulse radar system 失效
标题翻译：单脉冲雷达系统
公开(公告)号：US06741205B2
公开(公告)日：2004-05-25
申请号：US10227306
申请日：2002-08-26
申请人： Toshiyuki Nagasaku
发明人： Toshiyuki Nagasaku
IPC分类号： G01S740
CPC分类号： G01S7/4021 , G01S7/032 , G01S7/4017 , G01S7/4052 , G01S13/44 , G01S13/931 , G01S2007/4069 , G01S2013/9325
摘要： A monopulse radar system aims to correct an amplitude error and a phase error developed between receiving channels and improve the accuracy of a detected angle. To achieve the above aim, part of a transmit signal is supplied to respective channels on the receiving side through a signal transmission line for calibration. At this time, the gains of a variable phase shifter and a variable gain amplifier are adjusted so that an azimuth angle of a pseudo target, based on a signal for calibration, which is calculated by signal processing means, reaches a predetermined angle. Therefore, calibration work is simplified and an angular correction can be automated. Therefore, the present monopulse radar system is capable of coping even with variations in characteristic after product shipment due to environmental variations and time variations in parts characteristic.
摘要翻译：单脉冲雷达系统旨在纠正接收通道之间产生的振幅误差和相位误差，提高检测角度的精度。为了实现上述目的，通过用于校准的信号传输线将发送信号的一部分提供给接收侧的各个信道。此时，调整可变移相器和可变增益放大器的增益，使得基于由信号处理装置计算的用于校准的信号的伪目标的方位角达到预定角度。因此，校准工作简化，角度校正可以自动化。因此，目前的单脉冲雷达系统由于环境变化和部件特性的时间变化，能够在产品出货后的特性变化中应对。

7. 发明授权

US06731236B1 Methods and apparatus for optimizing interferometric radar altimeter cross track accuracy 有权
标题翻译：用于优化干涉雷达高度计交叉轨道精度的方法和装置
公开(公告)号：US06731236B1
公开(公告)日：2004-05-04
申请号：US10459137
申请日：2003-06-11
申请人： James R. Hager , Larry D. Almsted , Lavell Jordan
发明人： James R. Hager , Larry D. Almsted , Lavell Jordan
IPC分类号： G01S740
CPC分类号： G01S7/4021 , G01S13/4454 , G01S13/882
摘要： An apparatus for calibrating a radar altimeter is described. The altimeter provides an angle to a target based on radar energy received at right, left, and ambiguous antennas. The apparatus comprises a turntable on which the radar is mounted, a turntable controller which controls positioning of the radar altimeter, a radar energy source receiving transmit signals from the radar altimeter, a reflector, and a calibration unit. The reflector reflects and collimates radar energy from the radar source towards the radar altimeter. The calibration unit receives an angle from the controller indicative of a position of the radar altimeter with respect to the collimated radar energy and a measured angle from the radar altimeter. The calibration unit calculates a correction based on differences between the angle received from the turntable and the measured angle received from the altimeter and provides the calibration correction to the altimeter.
摘要翻译：描述了用于校准雷达高度计的装置。高度计基于在右，左和不明确的天线处接收到的雷达能量提供与目标的角度。该装置包括安装有雷达的转盘，控制雷达高度计的定位的转台控制器，接收来自雷达高度计的发射信号的雷达能量源，反射器和校准单元。反射器将来自雷达源的雷达能量反射并准直到雷达高度计。校准单元从控制器接收指示雷达高度计相对于准直雷达能量的位置的角度和来自雷达高度计的测量角度。校准单元基于从转盘接收到的角度与从高度计接收的测量角度之间的差异来计算校正，并向高度计提供校准校正。

8. 发明授权

US06720911B2 Method and apparatus for reducing the amount of shipboard-collected calibration data 失效
标题翻译：用于减少船上收集的校准数据量的方法和装置
公开(公告)号：US06720911B2
公开(公告)日：2004-04-13
申请号：US10218945
申请日：2002-08-14
申请人： Norman E. Saucier
发明人： Norman E. Saucier
IPC分类号： G01S740
CPC分类号： G01S13/0218 , G01S3/023 , G01S7/4026 , G01S2007/403 , G01S2007/4034
摘要： A system is provided for reducing the time that a ship must be maintained on station to collect calibration data by reducing the frequencies at which calibration data is to be collected. Since it is impractical to consider calibrating over elevation angle and polarization on the full-scale ship, an accurate scale model and test facility are utilized, with surface wave data being collected from the ship before model-based data can be utilized. In the subject system, the number of calibration frequencies used aboard ship is dramatically reduced by as much as 80%, thus reducing the time the ship must be on station when doing a calibration run. In one embodiment, the shipboard surface wave data for one elevation and one polarization is combined with surface wave and sky wave data from the scale model to generate an array manifold or database used in subsequent direction finding activities. In order to minimize the frequencies at which shipboard data is collected, the set of frequencies used for shipboard calibration is limited to a subset of all the original calibration frequencies. The number of frequencies used for shipboard calibration is reduced by selecting frequencies which generate adjustment, or weighting factors which are valid over a wide bandwidth.
摘要翻译：提供了一种系统，用于减少船舶在车站上维护的时间，以通过减少要收集校准数据的频率来收集校准数据。由于在全尺度船舶上考虑对仰角和极化进行校准是不切实际的，所以使用精确的比例模型和测试设施，在利用基于模型的数据之前，从船上收集表面波数据。在主题系统中，船上使用的校准频率数量大大减少了80％，从而减少了在进行校准运行时船舶必须驻车的时间。在一个实施例中，用于一个高程和一个极化的船上表面波数据与来自比例模型的表面波和天波数据组合以产生用于后续方向发现活动的阵列歧管或数据库。为了最小化收集船上数据的频率，用于船上校准的频率集被限制为所有原始校准频率的一个子集。通过选择产生调整的频率或在宽带宽上有效的加权因子，减少了用于船上校准的频率数。

9. 发明授权

US06693578B1 Mixer optimization for active radar warning receiver 有权
标题翻译：主动雷达报警接收机的混频器优化
公开(公告)号：US06693578B1
公开(公告)日：2004-02-17
申请号：US10392002
申请日：2003-03-18
申请人： Glen D. Martinson
发明人： Glen D. Martinson
IPC分类号： G01S740
CPC分类号： H03D9/0633 , G01S7/022 , G01S7/032 , G01S7/036 , H03J2200/29
摘要： A method to optimize a mixer (20) includes setting a DC bias current (24) at a predetermined level correlated to an RF frequency or band of interest, and varying the power output (32) of a local oscillator (36) until the DC voltage (66) of the mixer (20) is at a predetermined voltage. The setting for the local oscillator (36) is then stored, such as in volatile RAM (60), for use during normal operation of the receiver (10) to produce IF signals (40) correlated to the RF frequencies or band or interest. The process may be implemented on power-up of the receiver and/or periodically during use thereof in the field to reoptimize the mixer (20), and may be undertaken with different predetermined currents and voltages for different RF frequencies and/or bands.
摘要翻译：优化混频器（20）的方法包括将DC偏置电流（24）设置在与RF频率或感兴趣频带相关的预定电平，并且改变本地振荡器（36）的功率输出（32），直到DC 混合器（20）的电压（66）处于预定电压。然后存储本地振荡器（36）的设置，例如在易失性RAM（60）中，以在接收器（10）的正常操作期间使用，以产生与RF频率或频带或兴趣相关的IF信号（40）。该过程可以在接收机的上电和/或在现场的使用期间周期性地实现以重新优化混频器（20），并且可以针对不同的RF频率和/或频带进行不同的预定电流和电压。

10. 发明授权

US06542112B1 Interference cancellation in antenna test 失效
标题翻译：天线测试中的干扰消除
公开(公告)号：US06542112B1
公开(公告)日：2003-04-01
申请号：US10093152
申请日：2002-03-06
申请人： Xiaofen Chen , Soraya J. Matos
发明人： Xiaofen Chen , Soraya J. Matos
IPC分类号： G01S740
CPC分类号： H04B1/123 , G01R27/32 , G01R29/10
摘要： A method of interference cancellation in antenna test measurements is achieved by acquiring an acquisition at a test port of an antenna test instrument in response to an internal signal source, stamping the data acquisition time, and measuring a signal vector that has both a reflection signal component and an interference signal component. Another acquisition at the test port without the internal signal source is obtained with limited data points to detect whether there are interference signals. If there is significant interference power, a complete acquisition is obtained without the internal signal source, the data acquisition time is stamped, and an interference vector that has only the interference signal is measured. Then the interference frequency is measured, an interference phase shift between the two data acquisitions is calculated, an interference vector for the combined reflection/interference vector is predicted using the interference vector and the phase shift, and the predicted interference vector is subtracted from the signal vector to obtain the actual reflection signal for the antenna in the absence of interference.
摘要翻译：天线测试测量中的干扰消除方法是通过在天线测试仪器的测试端口响应于内部信号源获取采集，标记数据采集时间，并测量具有反射信号分量的信号矢量和干扰信号分量。在没有内部信号源的测试端口处的另一个采集是通过有限的数据点获得的，以检测是否存在干扰信号。如果存在明显的干扰功率，则无需内部信号源就可以获得完整的采集，数据采集时间被标记，并且仅测量干扰信号的干扰矢量。然后测量干扰频率，计算两次数据采集之间的干扰相移，使用干扰矢量和相移预测组合反射/干扰矢量的干涉矢量，并从信号中减去预测干扰矢量向量以在没有干扰的情况下获得天线的实际反射信号。

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