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21. 发明授权

US5422817A Strapdown inertial navigation system using high order 失效
标题翻译： Strapdown惯性导航系统使用高阶
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。

22. 发明授权

US06317215B1 Pseudorandom bit sequence generation 有权
标题翻译：伪随机位序列生成
公开(公告)号：US06317215B1
公开(公告)日：2001-11-13
申请号：US09611754
申请日：2000-07-07
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： G01C1972
CPC分类号： G01C19/72
摘要： The invention is a method and apparatus for generating 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：本发明是一种用于产生伪随机比特序列的方法和装置。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。

23. 发明授权

US06266583B1 System and method for improving the accuracy of pressure altitude determinations in an inertial navigation system 有权
标题翻译：用于提高惯性导航系统中压力高度确定精度的系统和方法
公开(公告)号：US06266583B1
公开(公告)日：2001-07-24
申请号：US09539268
申请日：2000-03-30
申请人： Daniel A. Tazartes , Brian T. Lottman , Dean E. Lottman , John G. Mark
发明人： Daniel A. Tazartes , Brian T. Lottman , Dean E. Lottman , John G. Mark
IPC分类号： G02B2310
CPC分类号： G01C5/005 , G01C21/165
摘要： A system and method for improving the accuracy of altitude determinations in an inertial navigation system. Pressure measurements available to the inertial navigation system are used to initially calculate an estimated pressure altitude using the standard day model for the atmosphere. Temperature measurements are further utilized in the physical relationship between temperature, pressure, and altitude to compute a second computed altitude. A change between subsequent second computed altitudes is calculated and compared with a respective change in the computed pressure altitude in order to generate a correction value. The correction value is then used to modify the computed pressure altitude to generate a more accurate determination of the absolute altitude of the inertial navigation system. The correction value is utilized to account for changes in atmospheric conditions which may be encountered by an aircraft and to further reduce the effects of erroneous temperature and pressure measurements in subsequent altitude determinations. Thus, the system and method of the present invention provides an absolute altitude determination having improved stability and improved accuracy over prior systems.
摘要翻译：一种用于提高惯性导航系统中高度确定精度的系统和方法。用于惯性导航系统的压力测量用于使用大气的标准日模型来初始计算估计的压力高度。温度测量进一步用于温度，压力和高度之间的物理关系，以计算第二个计算的高度。计算随后的第二计算高度之间的变化，并与计算出的压力高度的相应变化进行比较，以便产生校正值。然后使用校正值来修改计算的压力高度，以产生对惯性导航系统的绝对高度的更准确的确定。校正值被用于考虑飞机可能遇到的大气条件的变化，并进一步减少随后的高度测定中错误的温度和压力测量的影响。因此，本发明的系统和方法提供了相对于现有系统具有改进的稳定性和改进的精度的绝对高度确定。

24. 发明授权

US06175807B1 Temperature compensation method for strapdown inertial navigation systems 有权
标题翻译：捷联惯导系统的温度补偿方法
公开(公告)号：US06175807B1
公开(公告)日：2001-01-16
申请号：US09329094
申请日：1999-06-09
申请人： Robert J. Buchler , Larry R. Moeller , Shaw-Wen Fann , Daniel A. Tazartes , John G. Mark
发明人： Robert J. Buchler , Larry R. Moeller , Shaw-Wen Fann , Daniel A. Tazartes , John G. Mark
IPC分类号： G01C2100
CPC分类号： G01C21/16 , G01C25/005
摘要： The invention is a method continuing over a plurality of time periods for compensating for the output error in each of one or more navigation instruments in a system comprising a plurality of navigation instruments after the system is introduced into its operating environment. The practice of the method begins with determining the values of one or more of a set of coordinates that specify the position, velocity, and orientation of the system in space together with the error in a compensated output for each of the one or more navigation instruments. The method continues with determining a compensation model for each of the one or more navigation instruments. A compensation model specifies for a current time period an adjustment in amplitude of the output of a navigation instrument as a function of time and temperature. A compensation model is expressed as the sum of a first compensation model and a present second compensation model where the present second compensation model is a future second compensation model determined during the prior time period. The final steps of the method consist of measuring the time and the temperature of the navigation instruments and then obtaining a compensated output for each of the one or more navigation instruments by adjusting the output of a navigation instrument in accordance with its compensation model.
摘要翻译：本发明是在系统被引入其操作环境之后，在多个时间段内连续地补偿包括多个导航仪器的系统中的一个或多个导航仪器中的每一个中的输出误差的方法。该方法的实践开始于确定一组坐标中的一个或多个的值，该坐标系指定系统在空间中的位置，速度和取向以及一个或多个导航仪器中的每一个的补偿输出中的误差。该方法继续确定一个或多个导航仪器中的每一个的补偿模型。补偿模型根据时间和温度来指定当前时间段导航仪器的输出幅度的调整。补偿模型表示为第一补偿模型和当前第二补偿模型的总和，其中当前第二补偿模型是在先前时间段期间确定的未来第二补偿模型。该方法的最后步骤包括测量导航仪器的时间和温度，然后通过根据其补偿模型调整导航仪器的输出，获得一个或多个导航仪器中的每一个的补偿输出。

25. 发明授权

US6008903A Method for compensating for fringe visibility errors in a fiber-optic gyro 有权
标题翻译：用于补偿光纤陀螺仪中的边缘可见度误差的方法
公开(公告)号：US6008903A
公开(公告)日：1999-12-28
申请号：US188821
申请日：1998-11-09
申请人： Daniel A. Tazartes , Peter Kyriacou , John G. Mark
发明人： Daniel A. Tazartes , Peter Kyriacou , John G. Mark
IPC分类号： G01C19/72 , G01B19/72
CPC分类号： G01C19/72
摘要： The invention is a method for compensating for fringe visibility errors in a fiber-optic gyro. The light beam phase is modulated utilizing a phase-modulation generating function comprising a stepped waveform with steps of height 2.pi.k-.phi..sub.SE +j.phi..sub.M -.gamma..sub.ZS at time intervals .tau. where a phase step .phi. specified by the phase-modulation generating function is transformed into a change in light-beam phase of (.phi..sub.X /X).phi..sub.X where .phi..sub.X is the change in light phase produced by a phase step X. The integer k takes on the value -1, 0, or 1, j takes on the value -1 or 1, .phi..sub.SE is a phase determined by the fiber-optic gyro, .phi..sub.M is a predetermined phase value, and .gamma..sub.ZS is a phase designed to compensate for the fringe visibility errors. The phase .gamma..sub.ZS represents a small perturbation to the modulation and is a function of zone Z and state S where the zone identifier Z and state identifier S denote one of a plurality of operating conditions of the fiber-optic gyro. The zone identifier Z depends on the relative magnitudes and signs of .phi..sub.SE and .phi..sub.M, and the state identifier S is a function of k and j. Estimates of the Sagnac residual phase compensated for fringe visibility errors are then obtained by adding calculated fringe visibility compensation terms to .phi..sub.SE.
摘要翻译：本发明是用于补偿光纤陀螺中的边缘可见度误差的方法。光束相位利用相位调制生成函数进行调制，该相位调制生成函数包括阶梯形波形，该步长波形具有以相位调制生成器指定的相位步长phi的时间间隔τ的高度2πk-phi SE + j phi M-γZS 函数被变换为（phi X / X）phi X的光束相位的变化，其中，φi是由相位步X产生的光相变化。整数k取值为-1,0或1 ，j取值-1或1，phi SE是由光纤陀螺仪确定的相位，phi M是预定相位值，gamma ZS是设计用于补偿边缘可见度错误的相位。相位γZS表示对调制的小扰动，并且是区域Z和状态S的函数，其中区域标识符Z和状态标识符S表示光纤陀螺仪的多个操作条件之一。区域标识符Z取决于phi SE和phi M的相对大小和符号，状态标识符S是k和j的函数。然后通过将计算的边缘可见度补偿项添加到phi SE来获得对条纹可见度误差进行补偿的Sagnac残余相位的估计。

26. 发明授权

US5963323A Method for improving the performance of fiber-optic gyros by calculating the bias from using a broadband source 失效
标题翻译：通过计算使用宽带源的偏差来提高光纤陀螺性能的方法
公开(公告)号：US5963323A
公开(公告)日：1999-10-05
申请号：US019848
申请日：1998-02-06
申请人： Daniel A. Tazartes , John G. Mark , James G. Welker
发明人： Daniel A. Tazartes , John G. Mark , James G. Welker
IPC分类号： G01C19/72
CPC分类号： G01C19/721
摘要： The invention is a method for improving the performance of a fiber-optic gyro comprising counter-propagating light beams from a broadband source in an optical fiber configured as a coil. The fiber-optic gyro is of the type where the phases of the light beams are step-modulated at one or both ends of the optical fiber at time intervals equal to the light propagation time .tau. through the optical fiber, the step being in the range from 0 to 2.pi.-.delta. radians where .delta. is an infinitesimal. The step is the sum of an estimate of the Sagnac phase residual .phi..sub.SE with reversed sign and the quantity (2.pi.k+j.phi..sub.M) where the index k can take on the values -1, 0, and 1, and the index j can take on the values -1 and 1. The phase angle .phi..sub.M is a positive constant less than .pi. radians. The method comprises the steps of determining the interferometer output light intensity, determining the Sagnac fringe number n, calculating the error P.sub.nkj in the interferometer output light intensity attributable to the use of a broadband light-beam source for particular values of an index pair (k,j), determining estimates A.sub.kj of the probabilities of the index pairs (k,j) by counting the occurrences of each index pair (k,j) over a period of time, and determining the bias .epsilon. in the output of a fiber-optic gyro. The bias .epsilon. can be made independent of the Sagnac fringe number by proper design of the statistical properties of the phase modulating function.
摘要翻译：本发明是一种用于改进光纤陀螺的性能的方法，该光纤陀螺仪包括来自配置为线圈的光纤中的来自宽带源的反向传播光束。光纤陀螺是其中光束的相位在光纤的一端或两端以等于通过光纤的光传播时间τ的时间间隔被逐步调制的类型，该步长在该范围内从0到2 pi-delta弧度，其中δ是无穷小的。该步骤是Sagnac相残留phi SE与反向符号的估计和索引k可以取值为-1,0和1的数量（2 pi k + j phi M）之和，索引 j可以取值-1和1.相位角phi M是小于pi弧度的正常数。该方法包括以下步骤：确定干涉仪输出光强度，确定Sagnac条纹数n，计算由于使用宽带光束源而导致的干涉仪输出光强度中的误差Pnkj，用于索引对的特定值（k ，j），通过对一段时间内每个索引对（k，j）的出现进行计数来确定索引对（k，j）的概率的估计值Akj，以及确定光纤 - 光学陀螺仪可以通过适当设计相位调制功能的统计特性，使偏置ε独立于Sagnac边缘数。

27. 发明授权

US5331401A Method and apparatus for controlling dither in a multiple gyro system 失效
标题翻译：用于控制多个陀螺仪系统中的抖动的方法和装置
公开(公告)号：US5331401A
公开(公告)日：1994-07-19
申请号：US740731
申请日：1985-06-03
申请人： John G. Mark , Ray D. Dykeman , Daniel A. Tazartes , William B. Ware
发明人： John G. Mark , Ray D. Dykeman , Daniel A. Tazartes , William B. Ware
IPC分类号： G01C19/66 , G01B9/02 , G01C19/28 , H01S3/083
CPC分类号： G01C19/664 , Y10T74/1264
摘要： A method and apparatus for controlling dither in a multiple gyro system. Each gyro is driven at a distinct nominal frequency. The resulting gyro motions are measured, then demodulated to determine their cross-axis frequency content. Virtual drive signals are generated in light of the cross-axis interactions, then combined with the nominal drive frequencies in such a way that the measured cross-axis effects, resulting in either signal intermodulation or block coning, are nulled.
摘要翻译：一种用于控制多个陀螺仪系统中的抖动的方法和装置。每个陀螺仪以不同的标称频率驱动。测量所得到的陀螺运动，然后进行解调以确定它们的横轴频率含量。虚拟驱动信号是根据交叉轴相互作用生成的，然后与标称驱动频率相结合，使测得的交叉轴影响（导致信号互调或阻塞）都为零。

28. 发明授权

US5208653A Multioscillator ring laser gyroscope adaptive digitally controlled cavity length control system 失效
标题翻译：多光环激光陀螺自适应数字控制CAVITY长度控制系统
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。

29. 发明授权

US5189488A Fiber optical gyroscope utilizing orthogonal sequences 失效
标题翻译：光纤陀螺利用正交序列
公开(公告)号：US5189488A
公开(公告)日：1993-02-23
申请号：US796868
申请日：1991-11-25
申请人： John G. Mark , George A. Pavlath , Daniel A. Tazartes
发明人： John G. Mark , George A. Pavlath , Daniel A. Tazartes
IPC分类号： G01C19/72
CPC分类号： G01C19/72 , G01C19/728
摘要： Single and multiple axis fiber optic gyroscope systems employ orthogonal sequences to minimize the effects of both intra and inter-axis crosstalk. Sequences for driving electro-optic modulators are derived by examination of underlying primary and secondary demodulation sequences. Such underlying sequences are examined for orthogonality in accordance with a number of selection rules. When the selection rules are satisfied, the corresponding modulation sequences for driving the gyro(s) are identified and applied. By selecting the modulation waveforms in accordance with orthogonality criteria, one is assured of mean-zero bias errors within a predetermined number of loop transit times.
摘要翻译：单轴和多轴光纤陀螺仪系统采用正交序列来最小化内部和轴间串扰的影响。用于驱动电光调制器的序列是通过检查潜在的主要和次要解调序列得出的。根据多个选择规则检查这样的底层序列的正交性。当满足选择规则时，识别并应用用于驱动陀螺仪的相应调制序列。通过根据正交性标准选择调制波形，可以确定预定数量的循环传送时间内的平均零偏置误差。

30. 发明授权

US5189487A Multioscillator ring laser gyroscope local oscillator-based output optics detection system 失效
标题翻译：多振荡环激光陀螺仪基于本地振荡器的输出光学检测系统
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。

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