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。

公开(公告)号：US06285954B1

公开(公告)日：2001-09-04

申请号：US09358630

申请日：1999-07-21

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

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

IPC分类号： G05D100

CPC分类号： G05D1/0825

摘要： The invention is a method and apparatus for obtaining an accurate value x1c of a variable x1 based on an estimate x1e that is a function of K variables x1, x2, . . . , xk, . . . , xK. The method comprises the steps of (a) obtaining a plurality of estimates x1e, x2e, . . . , xke, . . . , xKe of the variables x1, x2, . . . , xk, . . . , xK over a method-execution time period, the values of the variables x1, x2, . . . , xk, . . . , xK changing or being changed during the method-execution time period; (b) obtaining from an external source the actual values x1a of x1 during the method-execution time period; (c) defining a compensation model &dgr;x1 that is a function of one or more of the estimates x1e, x2e, . . . , xke, . . . xKe of the variables x1, x2, . . . , xk, . . . , xK, the compensation model being further defined by I unknown constants a1, a2, . . . , ai, . . . , aI; (d) applying an operator G to the values of x1e−x1a and &dgr;x1; (e) determining the values of a1, a2, . . . , ai, . . . , aI; and (f) determining the value of x1c.

摘要翻译： 本发明是一种基于作为K个变量x1，x2的函数的估计值x1e获得变量x1的精确值x1c的方法和装置。 。 。 ，xk，。 。 。 ，xK。 该方法包括以下步骤：（a）获得多个估计值x1e，x2e，...。 。 。 ，xke，。 。 。 ，xKe的变量x1，x2，...。 。 。 ，xk，。 。 。 ，xK在方法执行时间段内，变量x1，x2，...的值。 。 。 ，xk，。 。 。 ，xK在方法执行时间段内改变或改变; （b）从外部来源获得方法执行期间x1的实际值x1a; （c）定义作为估计值x1e，x2e，...中的一个或多个的函数的补偿模型deltax1。 。 。 ，xke，。 。 。 xKe的变量x1，x2，...。 。 。 ，xk，。 。 。 ，xK，补偿模型由I未知常数a1，a2，...进一步定义。 。 。 ，ai，。 。 。 ，aI; （d）将运算符G应用于x1e-x1a和deltax1的值; （e）确定a1，a2，...的值。 。 。 ，ai，。 。 。 ，aI; 和（f）确定x1c的值。

公开(公告)号：US6130755A

公开(公告)日：2000-10-10

申请号：US255377

申请日：1999-02-22

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

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

IPC分类号： G01C19/64 ,  G01C19/72

CPC分类号： G01C19/72

摘要： The invention is a method and apparatus for determining the rotation of a medium through which a light beam propagates by modulating the light beam with a pseudorandom sequence of bits. The method comprises the steps of (1) selecting a "0" or a "1" as the next bit of the modified pseudorandom bit sequence if one or more criteria are satisfied, the criteria being based on the measured properties of a plurality of prior bits of the modified pseudorandom bit sequence; otherwise: (2) selecting the next bit of an initial pseudorandom bit sequence as the next bit of the modified pseudorandom bit sequence, the next bit of the initial pseudorandom bit sequence being a function of one or more prior bits of the initial pseudorandom bit sequence.

摘要翻译： 本发明是用于通过用伪随机序列比特调制光束来确定光束通过其传播的介质的旋转的方法和装置。 该方法包括以下步骤：（1）如果满足一个或多个标准，则选择“0”或“1”作为修改的伪随机比特序列的下一个比特，该标准基于多个先前的测量属性 修改的伪随机比特序列的比特; （2）选择初始伪随机比特序列的下一比特作为修改伪随机比特序列的下一比特，初始伪随机比特序列的下一比特是初始伪随机比特序列的一个或多个先前比特的函数 。

公开(公告)号：US5896199A

公开(公告)日：1999-04-20

申请号：US880129

申请日：1997-06-20

申请人： John G. Mark ,  Daniel A. Tazartes ,  Amado Cordova ,  Agop H. Cherbettchian ,  Eric L. Goldner

发明人： John G. Mark ,  Daniel A. Tazartes ,  Amado Cordova ,  Agop H. Cherbettchian ,  Eric L. Goldner

IPC分类号： G01C19/72

CPC分类号： G01C19/722

摘要： A gyroscope assembly (10) includes a ring-shaped fiber optic coil (14) and a coil conforming enclosure (12, 16) of high magnetic permeability ferromagnetic material. The enclosure is ring-shaped to conform with the shape of the coil, and includes a portion (22) extending within the internal hole of the coil ring. Therefore, the coil is intimately and fully encased within high magnetic permeability material. In particular, the enclosure comprises a coil supporting spool (12) and a cover (16) secured to the spool. The spool includes a base (18) which is provided with a central hole (20) and a tubular wall (22) extending perpendicularly from the base. Coil (14) is bonded to base (18). Both the spool and the cover are formed of high magnetic permeability material, and the cover is placed about the fiber optic coil and attached to the spool. The coefficient of thermal expansion material used for the spool is matched to that of the coil pack to minimize stress imposed upon the fiber. An outer shield (28), roughly cylindrical in shape, may be further attached to the outside of the inner, toroidal shield, and the two shields are separated by a layer of low magnetic permeability material, such as of low magnetic permeability stainless steel or aluminum.

摘要翻译： 陀螺仪组件（10）包括环形光纤线圈（14）和高磁导率铁磁材料的线圈合格外壳（12,16）。 外壳是环形的以符合线圈的形状，并且包括在线圈环的内部孔内延伸的部分（22）。 因此，线圈密封并完全封装在高磁导率材料内。 特别地，外壳包括线圈支撑线轴（12）和固定到线轴的盖（16）。 阀芯包括设置有中心孔（20）的底座（18）和从基座垂直延伸的管状壁（22）。 线圈（14）结合到基座（18）上。 卷轴和盖都由高磁导率材料形成，并且盖围绕光纤线圈放置并连接到卷轴。 用于卷轴的热膨胀材料系数与线圈组的热膨胀系数相匹配，以使施加在纤维上的应力最小化。 大致圆筒形的外屏蔽件（28）可以进一步附接到内环形屏蔽体的外部，并且两个屏蔽件被低磁导率材料层（例如低磁导率不锈钢）分开，或 铝。

公开(公告)号：US5890093A

公开(公告)日：1999-03-30

申请号：US742384

申请日：1996-11-01

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

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

IPC分类号： G01C21/16 ,  G05D1/00

CPC分类号： G01C21/16

摘要： The invention is a method and apparatus for compensating for sculling in a strapdown inertial navigation system. The method operates on a sequence of inputs .DELTA.V.sub.B (n) derived at times n.DELTA.t from the outputs of one or more accelerometers. Separately compensated quantities .DELTA.V.sub.Bc (m,p) calculated at times (pJ+1/2).DELTA.t for M values of m are obtained by summing A(m,k).DELTA.V.sub.B (pJ-j-k) over k from 0 to K-1 and over j from 0 to J-1 where the constants A(m,k) are chosen to minimize sculling error in the individual .DELTA.V.sub.Nc (m,p) quantities where .DELTA.V.sub.Nc (m,p) is the representation of .DELTA.V.sub.Bc (m,p) in the navigation frame of reference. The final compensated quantity .DELTA.V.sub.Bc (p) is obtained by summing B(m).DELTA.V.sub.Bc (m,p) over m where the constants B(m) are chosen to minimize sculling error in .DELTA.V.sub.Nc (p) where .DELTA.V.sub.Nc (p) is the representation of .DELTA.V.sub.Bc (p) in the navigation frame of reference.

摘要翻译： 本发明是用于补偿捷联惯性导航系统中的冲压的方法和装置。 该方法对从一个或多个加速度计的输出在时间n DELTA t导出的输入序列DELTA VB（n）进行操作。 通过对A（m，k）DELTA VB（pJ-jk）进行求和来获得对m个M值的时间（pJ ++ E，fra 1/2 + EE）DELTA t分别补偿量DELTA VBc（m，p） 选择从0到K-1的超过k，从0到J-1的j超过j，其中选择常数A（m，k）以最小化各个DELTA VNc（m，p）量中的抛物线误差，其中DELTA VNc（m，p ）是导航参考框架中DELTA VBc（m，p）的表示。 最终补偿量DELTA VBc（p）通过在m上求和B（m）DELTA VBc（m，p）而得到，其中选择常数B（m）以最小化DELTA VNc（p）中的剥离误差，其中DELTA VNc（p ）是导航参考框架中DELTA VBc（p）的表示。

公开(公告)号：US5828980A

公开(公告)日：1998-10-27

申请号：US937251

申请日：1997-07-01

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

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

IPC分类号： G01C21/16 ,  G05D1/00

CPC分类号： G01C21/16

摘要： The invention is a method for compensating for coning in a strapdown inertial navigation system which utilizes groups of five successive incremental angles of rotation of a body-fixed coordinate system as measured by orthogonally-mounted gyros at regular measurement intervals, each group of five measurements being obtained during a group interval equal to five measurement intervals. The coning-compensated angular displacement of the body-fixed coordinate system about a fixed axis in space during a p'th group interval is obtained by summing the five measured incremental angles and a coning compensation term. The coning compensation term consists of the sum of: (1) one-half the cross-product of a first and a second vector sum, the second vector sum being the sum of the five incremental angles of rotation in a group and the first vector sum being the sum of the second vector sum over p groups; and (2) the weighted sum of three vector cross-products, the multiplier and the multiplicand of each vector cross-product being a weighted sum of five measured incremental angles. The coning-compensated angular displacement can be summed over p to obtain an accurate estimate of the vector angle of rotation over a plurality of group intervals.

摘要翻译： 本发明是一种用于补偿捷联惯性导航系统中的锥齿的方法，其利用正常安装的陀螺仪以常规测量间隔测量的身体固定的坐标系的五个连续增加的旋转角度的组，每组五个测量为 在等于五个测量间隔的组间隔期间获得。 通过对五个测量的增量角和一个锥形补偿项求和来获得身体固定坐标系在第p组间隔期间围绕空间中的固定轴的锥角补偿角位移。 锥形补偿项包括以下之和：（1）第一和第二矢量和的交叉乘积的一半，第二矢量和是组中的五个增加旋转角度的和与第一矢量 sum是p组之间的第二个向量和的总和; 和（2）三个向量交叉乘积的加权和，每个向量交叉乘积的乘数和乘数是五个测量的增量角的加权和。 锥形补偿角位移可以通过p求和，以获得在多个组间隔上的向量旋转角度的精确估计。

公开(公告)号：US5325173A

公开(公告)日：1994-06-28

申请号：US518044

申请日：1990-05-04

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

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

IPC分类号： G01C19/66 ,  G01B9/02 ,  H01S3/083

CPC分类号： G01C19/664

摘要： A dithered ring laser gyroscope is mounted upon a support, and a pickoff is positioned between the gyro and the support to produce signals representative of rotation angle between the support and the gyro. A correction means is used to subtract out the effect of the dither from the output signal to the gyro. The correction means includes feedback means in the correction-producing apparatus. That feedback means includes tracking compensation for both gain and phase variation of the pickoff and pickoff electronics. To prevent constant or slowly varying signals from affecting the operation of the apparatus, the invention uses a differentiator or a high pass filter between the compensated output signal and the feedback loops.

摘要翻译： 抖动环形激光陀螺仪安装在支撑件上，并且拾音器位于陀螺仪和支架之间，以产生表示支架和陀螺仪之间旋转角度的信号。 使用校正装置来减去从输出信号到陀螺仪的抖动的影响。 校正装置包括校正产生装置中的反馈装置。 该反馈装置包括跟踪补偿和拾取电路的增益和相位变化。 为了防止恒定或缓慢变化的信号影响装置的操作，本发明在补偿的输出信号和反馈回路之间使用微分器或高通滤波器。

公开(公告)号：US5074664A

公开(公告)日：1991-12-24

申请号：US640179

申请日：1991-01-11

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

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

IPC分类号： G01C19/66

CPC分类号： G01C19/665

摘要： A ring laser gyro having a ring laser that preferably has four legs and four corner mirrors. At least one of the corner mirror is partly transmissive, and the transmitted beam is sensed and converted into a digital signal. The digital signal is fed back in two computer loops to at least one digital-to-analog converter, and thence to a transducer which drives at least one corner mirror inward and outward. One of the computer loops includes a stepped demodulator having four steps per cycle. The steps have voltages at the operating voltage of the transducer, that voltage plus an increment, the operating voltage, and that voltage less a decrement. The first loop sends an operating voltage to the digital-to-analog converters. The second loop demodulates the beam signal at a second harmonic of the demodulation of the first loop to produce a voltage signal which controls the amplitude of dithering of the movable mirrors. A stepped modulator, in synchronism with the demodulator of the first loop, delivers a modulation signal to the digital-to-analog converters to step the movable mirrors. The operating voltage moves the mirrors into a position wherein the laser cavity operates at its intensity mode peaks.

摘要翻译： 具有环形激光器的环形激光陀螺仪，其优选地具有四条腿和四个角镜。 角镜中的至少一个是部分透射的，并且所发射的光束被感测并转换成数字信号。 数字信号在两个计算机回路中被馈送到至少一个数模转换器，然后被馈送到向内和向外驱动至少一个角镜的换能器。 计算机回路中的一个包括具有每个周期四个步长的阶梯式解调器。 这些步骤在传感器的工作电压下具有电压，该电压加一个增量，工作电压，该电压减去一个减量。 第一个回路将一个工作电压发送到数模转换器。 第二回路以第一回路的解调的二次谐波解调波束信号，以产生控制可移动镜的抖动振幅的电压信号。 与第一回路的解调器同步的阶梯式调制器将调制信号传送到数模转换器以步进可移动反射镜。 工作电压将反射镜移动到其激光腔以其强度模式峰值工作的位置。

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。