公开(公告)号：US5751425A

公开(公告)日：1998-05-12

申请号：US777498

申请日：1996-12-30

申请人： Donald A. Frederick ,  John G. Mark ,  Daniel A. Tazartes ,  David B. Hall ,  Tae W. Hahn

发明人： Donald A. Frederick ,  John G. Mark ,  Daniel A. Tazartes ,  David B. Hall ,  Tae W. Hahn

IPC分类号： G01C19/66 ,  G01C19/64

CPC分类号： G01C19/66

摘要： A ring laser gyroscope having an alternating Faraday bias includes mode combining apparatus arranged to cause interference between the modes that propagate within the cavity. Signal separating apparatus separates a signal indicative of rotation of the frame from other components of the combined intensity signal. The signal separating apparatus produces two signals indicative of the light intensity in the interference pattern of the combined modes. These two signals have a 180.degree. phase difference in corresponding components that are dependent upon the geometric bias caused by the non-planar optical path to produce a rotation signal that is independent of the spatially uniform interference fringes caused by the geometric bias.

摘要翻译： 具有交替法拉第偏置的环形激光陀螺仪包括布置成在腔内传播的模式之间产生干涉的模式组合装置。 信号分离装置将表示帧的旋转的信号与组合强度信号的其他分量分离。 信号分离装置产生指示组合模式的干涉图案中的光强度的两个信号。 这两个信号在对应的分量中具有180°的相位差，其取决于由非平面光路引起的几何偏置，以产生独立于由几何偏差引起的空间均匀干涉条纹的旋转信号。

公开(公告)号：US5208653A

公开(公告)日：1993-05-04

申请号：US741291

申请日：1991-08-06

申请人： John G. Mark ,  Daniel A. Tazartes ,  Tae W. Hahn

发明人： John G. Mark ,  Daniel A. Tazartes ,  Tae W. Hahn

IPC分类号： G01C19/66 ,  H01S3/139

CPC分类号： H01S3/139 ,  G01C19/665

摘要： Disclosed herein is a Digitally Controlled Cavity Length Control System comprising, in a preferred embodiment, an adaptive servo-loop for cavity length, modulation depth and amplitude control, and of the multioscillator ring laser gyroscope; thereby, permitting the simultaneous control of these elements. The cavity length control of the multioscillator, by including a variable RF detector gain, allows the operation of the gyroscope in a slightly detuned fashion to minimize magnetic sensitivity. In this manner, the multioscillator gyroscope may be maintained at a stable operating point suitable for modeling.

摘要翻译： 本文公开了一种数字控制腔长度控制系统，在优选实施例中，包括用于腔长度，调制深度和幅度控制的自适应伺服回路以及多振荡器环形激光陀螺仪; 从而允许同时控制这些元件。 通过包括可变RF检测器增益，多谐振荡器的腔长度控制允许陀螺仪以稍微失谐的方式操作以最小化磁敏感度。 以这种方式，多谐振荡器陀螺仪可以保持在适于建模的稳定工作点。

公开(公告)号：US5189487A

公开(公告)日：1993-02-23

申请号：US796567

申请日：1991-11-21

申请人： John G. Mark ,  Daniel A. Tazartes ,  Tae W. Hahn

发明人： John G. Mark ,  Daniel A. Tazartes ,  Tae W. Hahn

IPC分类号： G01C19/66

CPC分类号： G01C19/667

摘要： A rotational sensing system for a Multioscillator ring laser gyroscope is disclosed herein that can operate with a simple upright symmetric optics mechanism, where the required signal separation is performed fully electronically, with the use of a local oscillator. The technique allows for rotational rate and direction detection, as well as cavity length control, with a minimum of cross-talk.

摘要翻译： 本文公开了一种用于多振荡器环形激光陀螺仪的旋转感测系统，其可以使用简单的直立对称光学机构来操作，其中使用本地振荡器完全电子地执行所需的信号分离。 该技术允许旋转速率和方向检测以及腔长度控制，具有最小的串扰。

公开(公告)号：US5374990A

公开(公告)日：1994-12-20

申请号：US45905

申请日：1993-04-12

申请人： Tae W. Hahn ,  Daniel A. Tazartes ,  John G. Mark

发明人： Tae W. Hahn ,  Daniel A. Tazartes ,  John G. Mark

IPC分类号： G01C19/66 ,  H01S3/139 ,  G01C19/64

CPC分类号： G01C19/665 ,  H01S3/139

摘要： Dispersion in a multi-oscillator cavity is equalized by processing information extracted from the laser beams within the cavity to generate an error signal representative of dispersion bias, and applying a bias control signal to the cavity in such a way as to null the error signal. The bias control signal is preferably a magnetic field applied to the gain medium of the cavity by passing a corresponding current through a coil surrounding the medium. In exemplary embodiments, the laser beams are modulated by modulating the applied magnetic field and/or the path length of the cavity.

摘要翻译： 通过处理从空腔内的激光束提取的信息来产生表示色散偏差的误差信号并将偏置控制信号以使得误差信号无效的方式施加到空腔中来均衡多谐振腔中的色散。 偏置控制信号优选地是通过使相应的电流通过围绕介质的线圈施加到空腔的增益介质的磁场。 在示例性实施例中，通过调制施加的磁场和/或腔的路径长度来调制激光束。

公开(公告)号：US06940433B2

公开(公告)日：2005-09-06

申请号：US10714199

申请日：2003-11-14

申请人： Daniel A. Tazartes ,  John G. Mark

发明人： Daniel A. Tazartes ,  John G. Mark

IPC分类号： B81C99/00 ,  H03M1/20

CPC分类号： G01C19/5719

摘要： A method of distinguishing an analog drive signal from a pickoff signal for attenuating the effect of electrical cross-coupling between the analog drive signal and the pickoff signal. The method may include receiving a periodic digital signal at a first frequency in the form of a stream of digital data values, randomly inverting at least one of the digital data values and converting the stream of digital data values to a stream of analog data values to form an analog drive signal. The method may also include driving a sensor, physically coupled to a resonant member configured to oscillate at a second frequency, using the analog drive signal and sensing changes in the movement of the resonant member detected by the sensor for producing a pickoff signal.

摘要翻译： 一种区分模拟驱动信号与传感信号的方法，用于衰减模拟驱动信号和检测信号之间的电交叉耦合的影响。 该方法可以包括以数字数据值流的形式以第一频率接收周期性数字信号，随机地反转数字数据值中的至少一个，并将数字数据流流转换为模拟数据值流到 形成模拟驱动信号。 该方法还可以包括驱动传感器，物理耦合到被配置为以第二频率振荡的谐振构件，使用模拟驱动信号并且感测由传感器检测的谐振构件的运动的变化以产生拾取信号。

公开(公告)号：US06871561B2

公开(公告)日：2005-03-29

申请号：US10093158

申请日：2002-03-07

申请人： Michael W. Denice, Jr. ,  John G. Mark ,  Daniel A. Tazartes

发明人： Michael W. Denice, Jr. ,  John G. Mark ,  Daniel A. Tazartes

IPC分类号： F16F15/08 ,  G01C21/16 ,  G01D21/00 ,  F16F1/00 ,  F16M1/00

CPC分类号： G01C21/16 ,  F16F15/08

摘要： Multiple isolators are configured with respect to an assembly (101), such as a sensor assembly in an inertial navigation system or other system where cross-axis acceleration or rotation coupling is undesirable. The system utilizes a set of isolators (203, 209, 215, and 221; 305, 307, 311, 313, 317, 319, 323, 325; or 403, 405, 407, 411, 413, and 415) that are substantially matched to each other, but may have uncorrelated axial stiffness and radial stiffness. The system configuration does not introduce cross-axis coupling, such as cross-axis translational coupling and cross-axis rotational coupling.

摘要翻译： 多个隔离器相对于组件（101）构造，诸如惯性导航系统中的传感器组件或其中不希望有横轴加速或旋转耦合的其它系统。 该系统利用基本上是一组隔离器（203,209,215和221; 305,307,311,313,317,319,323,345;或403,405,407,411,413和415） 彼此匹配，但可能具有不相关的轴向刚度和径向刚度。 系统配置不引入交叉轴耦合，例如横轴平移耦合和交叉轴旋转耦合。

公开(公告)号：US06538745B1

公开(公告)日：2003-03-25

申请号：US09499910

申请日：2000-02-08

申请人： Daniel A. Tazartes ,  John G. Mark ,  Brian T. Lottman ,  Shaw W. Fann

发明人： Daniel A. Tazartes ,  John G. Mark ,  Brian T. Lottman ,  Shaw W. Fann

IPC分类号： G01C1966

CPC分类号： G01C19/667

摘要： The invention is a method and apparatus for processing signals with frequencies fL and fR from a multioscillator ring laser gyro, the method being repeated at regular time intervals. The difference f&Dgr;&thgr;, of fL and fR is a measure of the angular rotation rate of the ring laser gyro and the sum fF of fL and fR divided by 2 is the Faraday bias frequency. The first step of the method comprises determining two or more of the values MLP, MRP, MFP, and M&Dgr;&thgr;P of a set of functions ML(fL), MR(fR), MF(fF), and M&Dgr;&thgr;(f&Dgr;&thgr;). The second step comprises storing two or more processed values MLS, MRS, MFS, and M&Dgr;&thgr;S of the functions ML(fL), MR(fR), MF(fF), and M&Dgr;&thgr;(f&Dgr;&thgr;) if the corresponding values of MLP, MRP, MFP, and M&Dgr;&thgr;P are valid. A processed value is derived from the value for the present time interval and zero or more processed values for prior time intervals. The third step comprises determining f&Dgr;&thgr;P or a function thereof from zero or more valid function values obtained as a result of executing the first step during the current time interval, zero or more processed values obtained as a result of executing the second step during a prior time interval, and zero or more extrapolated values obtained by extrapolating the processed values obtained as a result of executing the second step during a prior time interval to the present time interval.

摘要翻译： 本发明是用于处理来自多振荡器环形激光陀螺仪的频率为fL和fR的信号的方法和装置，该方法以规则的时间间隔重复。 fL和fR的差fDELTAtheta是环形激光陀螺仪的角度旋转速率的度量，fL和fR的和fF除以2是法拉第偏置频率。 该方法的第一步包括确定一组函数ML（fL），MR（fR），MF（fF）和MDELTAta（fDTATA））的值MLP，MRP，MFP和MDELTAthetaP中的两个或多个。 第二步包括如果MLP，MRP等的相应值存储两个或更多个功能ML（fL），MR（fR），MF（fF）和MDELTAtheta（fDELTAtheta）的处理值MLS，MRS，MFS和MDELTATATA， MFP和MDELTAthetaP均有效。 从当前时间间隔的值和先前时间间隔的零个或多个处理值导出处理值。 第三步骤包括从作为在当前时间间隔期间执行第一步骤的结果而获得的零个或多个有效函数值确定fDELTAthetaP或其函数，作为在之前时间执行第二步骤的结果而获得的零个或多个处理值 间隔，以及通过外推作为在先前时间间隔期间执行第二步骤的结果获得的处理值而获得的零个或多个外推值到当前时间间隔。

公开(公告)号：US5682241A

公开(公告)日：1997-10-28

申请号：US613558

申请日：1996-03-11

申请人： John G. Mark ,  Daniel A. Tazartes ,  Amado Cordova

发明人： John G. Mark ,  Daniel A. Tazartes ,  Amado Cordova

IPC分类号： G01C19/72

CPC分类号： G01C19/72

摘要： A phase modulator applies sequences of artificial phase shifts in the region of overmodulation between light beams counterpropagating within the sensor coil of a Sagnac interferometer to obtain improved random walk performance. The sequences are composed of phase shifts of .+-.a.pi./2b and .+-.(4b-a).pi./2b where a is an odd integer and b is an integer greater than 1. The waveform for driving the phase modulator is derived from a 2.pi. radian mapping plotted so that adjacent driving signal values differ by a.pi./2b or -(4b-a).pi./2b in a first angular direction and by -a.pi./2b or by (4b-a).pi./2b in the opposite angular direction. Angular transitions about the mapping may be predetermined to generate a deterministic, random, or pseudo-random modulation sequence. In the event that a deterministic sequence is chosen, it is examined for orthogonality properties to assume zero average output bias from crosstalk.

摘要翻译： 相位调制器在Sagnac干涉仪的传感器线圈内的反向传播的光束之间的过调制区域中施加人造相移序列，以获得改进的随机游走性能。 序列由+/- a pi / 2b和+/-（4b-a）pi / 2b的相移组成，其中a是奇整数，b是大于1的整数。用于驱动相位调制器的波形是 衍生自2 pi弧度映射，使得相邻的驱动信号值在第一角度方向上以pi-2b或 - （4b-a）pi / 2b和-a / 2b或由（4b-a）pi / 2b在相反的角度方向。 关于映射的角度转换可以被预先确定以产生确定性，随机或伪随机调制序列。 在选择确定性序列的情况下，检查正交性质以假定来自串扰的零平均输出偏差。

公开(公告)号：US5422817A

公开(公告)日：1995-06-06

申请号：US744178

申请日：1991-08-13

申请人： Daniel A. Tazartes ,  John G. Mark

发明人： Daniel A. Tazartes ,  John G. Mark

IPC分类号： G01C21/16 ,  G01C25/00

CPC分类号： G01C21/16

摘要： Sculling error correction means, using third or higher order correction to correct for sculling errors in apparatus for converting angle measuring and acceleration measuring signals from a vehicle set of coordinates into a stabilized set of navigation coordinates.

摘要翻译： 拼接误差校正装置，使用第三或更高阶校正来校正用于将角度测量和加速度测量信号从车辆坐标系转换成稳定的导航坐标系的装置中的冲切误差。

公开(公告)号：US06307631B1

公开(公告)日：2001-10-23

申请号：US09607471

申请日：2000-06-30

申请人： Daniel A. Tazartes ,  John G. Mark ,  David I. Tazartes

发明人： Daniel A. Tazartes ,  John G. Mark ,  David I. Tazartes

IPC分类号： G01C1972

CPC分类号： G01C19/72

摘要： The invention is a method and apparatus for generating a primary pseudorandom bit sequence consisting of a plurality of contiguous P subsequences. Each P subsequence consists of a start sequence of predetermined length followed by a sequence of trailing bits. The method comprises three steps. The first step consists of deriving a feedback bit from each generating sequence in a P subsequence in accordance with a specified rule where a generating sequence is any sequence of contiguous bits in the P subsequence having the same length as the start sequence. The bit that follows a generating sequence is called the trailing bit for that generating sequence. The second step of the method consists of determining a sequence of one or more modifier bits to be used in modifying the P subsequence. The third step of the method consists of modifying the P subsequence utilizing the one or more modifier bits.

摘要翻译： 本发明是一种生成由多个邻接P子序列组成的主伪随机位序列的方法和装置。 每个P子序列包括预定长度的开始序列，随后是后续位序列。 该方法包括三个步骤。 第一步包括根据指定规则从P子序列中的每个生成序列导出反馈比特，其中生成序列是具有与起始序列相同长度的P子序列中的连续比特的任何序列。 跟随生成序列的位称为该生成序列的尾随位。 该方法的第二步是确定用于修改P子序列的一个或多个修饰符比特的序列。 该方法的第三步包括利用一个或多个修饰词比特来修改P子序列。