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1. 发明申请

WO1998029757A1 ATTITUDE DETERMINATION METHOD AND SYSTEM 审中-公开
标题翻译：态度决定方法与系统
公开(公告)号：WO1998029757A1
公开(公告)日：1998-07-09
申请号：PCT/US1997021500
申请日：1997-11-20
申请人： HONEYWELL INC.
发明人： HONEYWELL INC. , SHEIKH, Suneel, I. , VALLOT, Lawrence, C. , SCHIPPER, Brian, W.
IPC分类号： G01S05/02
CPC分类号： G01C21/165 , G01S19/36 , G01S19/53 , G01S19/55
摘要： A method for use in vehicle attitude determination includes generating GPS attitude solutions for a vehicle using three or more antennas receiving GPS signals from two or more space vehicles. An inertial navigation system is initialized by setting the attitude of the inertial navigation system to a GPS attitude solution generated for the vehicle and/or the attitude of the inertial navigation system is updated using the GPS attitude solutions generated for the vehicle or GPS estimated attitude error generated for the vehicle. A system for use in vehicle navigation is also provided. The system generally includes three or more GPS antenna/receiver sets associated with a vehicle, an inertial measurement unit that provides inertial measurements for the vehicle, a processing unit of the system having the capability for generating GPS attitude computations for the vehicle using the three or more GPS antenna/receiver sets and signals from two or more space vehicles; the GPS attitude computations include at least one of absolute attitudes and estimated attitude errors. The processing unit of the system also includes a filter for generating estimates of attitude for the vehicle using the inertial measurements from the inertial measurement unit and the attitude computations.
摘要翻译：用于车辆姿态确定的方法包括：使用接收来自两个或更多个太空车辆的GPS信号的三个或更多个天线为车辆生成GPS姿态解决方案。惯性导航系统通过将惯性导航系统的姿态设置为针对车辆产生的GPS姿态解决方案和/或者使用为车辆生成的GPS姿态解或GPS估计姿态误差来更新惯性导航系统的姿态来初始化为车辆生成。还提供了用于车辆导航的系统。该系统通常包括与车辆相关联的三个或更多个GPS天线/接收机组，为车辆提供惯性测量的惯性测量单元，该系统的处理单元具有用于使用三个或更多的车辆生成用于车辆的GPS姿态计算的能力更多的GPS天线/接收机和来自两个或更多的太空车辆的信号; GPS姿态计算包括绝对态度和估计姿态误差中的至少一种。系统的处理单元还包括一个过滤器，用于使用来自惯性测量单元的惯性测量值和姿态计算产生车辆的姿态估计。

2. 发明申请

WO1998011451A1 RECEIVER WITH IMPROVED MULTIPATH SIGNAL REJECTION 审中-公开
标题翻译：接收器具有改进的多路信号抑制
公开(公告)号：WO1998011451A1
公开(公告)日：1998-03-19
申请号：PCT/US1997015997
申请日：1997-09-10
申请人： LITTON CONSULTING GROUP, INC.
发明人： LITTON CONSULTING GROUP, INC. , WOO, Richard, Kai-Tuen
IPC分类号： G01S05/02
CPC分类号： G01S19/22 , G01S19/29
摘要： A global positioning system receiver includes an inbound signal terminal to receive an inbound global positioning system signal having an inbound PRN code from a global positioning system signal source. A local PRN code generator is configured to generate a local PRN code. A discriminator is coupled to the inbound signal terminal and to the local PRN code generator and configured to compare the inbound signal and the local PRN code and to generate a discriminator signal containing a positive portion and a negative portion. A processor (1205) is coupled to the discriminator and configured to receive the discriminator signal to process the discriminator signal to determine a bit code and to determine a distance from the global positioning system signal source based on said bit code. In one embodiment, the discriminator includes an acquisition mode configured to acquire the inbound PRN code wherein the discriminator has a first gate width and a tracking mode configured to track the PRN code wherein the discriminator has a second gate width less than the first gate width. Advantages of the invention include improved multipath signal rejection.
摘要翻译：全球定位系统接收机包括入站信号终端，用于从全球定位系统信号源接收具有入站PRN码的入站全局定位系统信号。本地PRN代码生成器被配置为生成本地PRN代码。鉴别器耦合到入站信号终端和本地PRN码发生器，并被配置为比较入站信号和本地PRN码，并产生包含正部分和负部分的鉴别信号。处理器（1205）耦合到鉴别器并且被配置为接收鉴别器信号以处理鉴别器信号以确定位码，并且基于所述位码确定与全球定位系统信号源的距离。在一个实施例中，鉴别器包括获取模式，其被配置为获取入站PRN码，其中鉴别器具有第一栅极宽度，跟踪模式被配置为跟踪PRN码，其中鉴别器具有小于第一栅极宽度的第二栅极宽度。本发明的优点包括改进的多径信号抑制。

3. 发明申请

WO1996021162A1 FLEXIBLE SIGNAL SOURCE LOCATION APPARATUS AND METHOD THEREFOR 审中-公开
标题翻译：灵活信号源位置装置及其方法
公开(公告)号：WO1996021162A1
公开(公告)日：1996-07-11
申请号：PCT/US1995015066
申请日：1995-11-17
申请人： MOTOROLA INC.
发明人： MOTOROLA INC. , VANDEN HEUVEL, Dean, Paul , BLANCHARD, Scott, David , LESTER, Joseph, Olk
IPC分类号： G01S05/02
CPC分类号： G01S5/02 , H04B7/1855
摘要： A subscriber unit (26) communicates with a satellite (12) using electromagnetic signals so that observations (102) of the signals are obtained. Surface contours are generated (104) based on the signal component measured. The surface contour intersections produce candidate locations on the earth's surface. The candidate locations seed a least-squares estimation to produce final locations. Data produced during the least-squares fit is used to generate confidence ellipses (116) about the final locations. Most likely actual locations are determined from the fit associated with the confidence regions. A variety of signal source measurements can be used while providing a best estimate of a signal source location when an exact solution is not mathematically possible. The location is converted to coordinates that can be used in a satellite communication system (10) for making decisions regarding the granting or denying of communication services, billing rate and the like.
摘要翻译：用户单元（26）使用电磁信号与卫星（12）通信，从而获得信号的观察（102）。基于测量的信号分量生成表面轮廓（104）。表面轮廓交点产生地球表面上的候选位置。候选位置种下最小二乘估计以产生最终位置。在最小二乘拟合期间产生的数据用于生成关于最终位置的置信椭圆（116）。最可能的实际位置由与置信区域相关联的拟合确定。当精确的解决方案在数学上不可能时，可以使用各种信号源测量，同时提供信号源位置的最佳估计。该位置被转换为可用于卫星通信系统（10）中的坐标，用于作出关于授予或拒绝通信服务，计费费率等的决定。

4. 发明申请

WO1997022017A1 GPS TRANSLATOR WITH SPREAD SPECTRUM PILOT 审中-公开
标题翻译：带有扩展频谱导航的GPS翻译器
公开(公告)号：WO1997022017A1
公开(公告)日：1997-06-19
申请号：PCT/US1996019491
申请日：1996-12-09
申请人： NORTHROP GRUMMAN CORPORATION
发明人： NORTHROP GRUMMAN CORPORATION , GUTHRIE, Warren, E. , ROZAK, Robert , SZMURLO, Thomas, E.
IPC分类号： G01S05/02
CPC分类号： G01S19/09
摘要： A translator for translating GPS signals received at one location to a different frequency for ground transmission to another location uses a spread spectrum pilot tone for phase-locking (56) the local oscillator of the ground transmitter to that of the ground receiver, thereby increasing security, enabling use of otherwise unavailable frequency spectra, allowing coherence of pilot tone and GPS signal with small coherence bandwidths, and allowing interference-free transmission of the translated GPS signal and pilot tone with the same center frequency.
摘要翻译：用于将在一个位置处接收的GPS信号转换为不同频率以用于地面传输到另一位置的翻译器使用扩展频谱导频音来将地面发射机的本地振荡器相对于地面接收机的本地振荡器相位锁定（56），从而增加安全性能够使用其他不可用的频谱，允许具有小相干带宽的导频和GPS信号的相干性，并允许具有相同中心频率的翻译的GPS信号和导频音的无干扰传输。

5. 发明申请

WO1995015499A1 DIFFERENTIAL GLOBAL POSITIONING SWATH GUIDANCE SYSTEM WITH DUAL ROW LIGHTBAR AND FLOW CONTROLLER APPARATUS AND METHOD 审中-公开
标题翻译：具有双轨灯和流量控制器的差分全球定位系统
公开(公告)号：WO1995015499A1
公开(公告)日：1995-06-08
申请号：PCT/US1994013845
申请日：1994-12-02
申请人： SATLOC, INC.
发明人： SATLOC, INC. , GOODWIN, John, L. , HARTT, Joseph, R. , VETTER, Alan, A. , WALTON, John, T. , BLETZACKER, Frank, R. , FORGETTE, Thomas, M. , HUGHES, Arthur , NEUPERGER, Frank, H. , FALKENBERG, William, H.
IPC分类号： G01S05/02
CPC分类号： G01S19/41
摘要： A base station (9) and a ground or airborne rover (13, 16) receive satellite (1, 2, 3, 4) DGPS signals (5) which base (9) corrects and sends (6) to rover to accurately position rover to dispense agricultural products in a predefined field (20) using selectable swathing patterns (Figs. 3-6). Rover's computer controlled DGPS receivers (41, 42), convert rover's present position relative to the swath to a lateral displacement and an intercept angle. Lateral displacement/intercept angle are displayed by lighting an equivalent number of lights (151, 153)/(152, 154) on the proper half of an upper/lower row of LEDs in a lightbar (46) and by a number in a left/right digital display (157/156) of the lightbar. A flow controller monitors DGPS provided ground speed and actual position to meter the flow rate of product dispensed. The lightbar window is angled and nonreflective.
摘要翻译：基站（9）和地面或空中漫游器（13,16）接收卫星（1,2,3,4）DGPS信号（5），其基于（9）校正并发送（6）到流动站以准确地定位流动站以使用可选的条纹图案在预定义区域（20）中分配农产品（图3-6）。 Rover的计算机控制的DGPS接收器（41,42）将流动站相对于幅面的当前位置转换为横向位移和截距角。通过在灯条（46）中的上/下排LED的适当一半上照亮相当数量的光（151,153）/（152,154）和左侧的数字来显示横向位移/截距角 /右数字显示（157/156）。流量控制器监控DGPS提供的地面速度和实际位置，以衡量分配产品的流量。灯条窗口是有角度的和非反射的。

6. 发明申请

WO1995004941A1 METHOD AND APPARATUS FOR TRACKING THE POSITION AND VELOCITY OF AIRBORNE INSTRUMENTATION 审中-公开
标题翻译：追踪航空器仪表位置和速度的方法与装置
公开(公告)号：WO1995004941A1
公开(公告)日：1995-02-16
申请号：PCT/US1993007436
申请日：1993-08-06
申请人： A.I.R., INC. , MACDORAN, Peter, F. , CALL, David, B. , GOLD, Kenneth, L. , SCHREINER, William, S. , ZIEL, Fred, A.
发明人： A.I.R., INC.
IPC分类号： G01S05/02
CPC分类号： G01S5/0036 , G01S19/09 , G01S19/35 , G01S19/42 , G01S19/52
摘要： A method and system for tracking the position of at least one moving object, such as an airborne meteorological instrument (20) from a ground processing station by intercepting wideband spread spectrum signals transmitted from a plurality of satellites in which the code sequence of the signals is not known, comprises a receiver circuit in the moving object which compresses the wideband signals received into a narrow band, removes any frequency bias with a reference oscillator (12) having a frequency offset value, forms a narrow analog baseband (9) and transmits (14) to the processing station at which spectral lines are produced and compared with synthetic spectrum values to determine the identity of each satellite, the reference oscillator frequency offset value is estimated, and the location and velocity of the moving object is determined.
摘要翻译：一种用于通过截取从信号码序列为多个的多个卫星发送的宽带扩频信号来跟踪来自地面处理站的至少一个移动物体（例如空中气象仪器）20的位置的方法和系统，不知道的是，包括移动物体中的接收器电路，其将接收到的宽带信号压缩成窄带，用具有频率偏移值的参考振荡器（12）去除任何频率偏差，形成窄的模拟基带（9）并发送（ 14）到生成谱线的处理站，并与合成频谱值进行比较以确定每个卫星的身份，估计参考振荡器频率偏移值，并确定移动物体的位置和速度。

7. 发明申请

WO1995000861A1 SATELLITE POSITIONING SYSTEM FILTER 审中-公开
标题翻译：卫星定位系统过滤器
公开(公告)号：WO1995000861A1
公开(公告)日：1995-01-05
申请号：PCT/US1994006992
申请日：1994-06-16
申请人： TRIMBLE NAVIGATION LIMITED
发明人： TRIMBLE NAVIGATION LIMITED , McBURNEY, Paul, W.
IPC分类号： G01S05/02
CPC分类号： G01S19/29 , G01S19/30 , G01S19/46
摘要： A method and associated algorithm for filtering time-varying location solution coordinates Px,n, Py,n and Pz,n (301) determined by a Satellite Positioning System (SATPS), which operates in a static mode and a dynamic mode (303), to reduce large discontinuities and control the rate at which a changing sequence of measurement errors can induce a change in a sequence of position solutions. The method forms sequences of filtered location coordinates {P &cir& x,n}, {P &cir& y,n} and {P &cir& z,n} (325), smoothed to reduce discontinuities that occur with a changing set of measurement errors. The filtered location coordinates P &cir& x,n, P &cir& y,n and P &cir& z,n (325) are formed as linear combinations of the respective unfiltered location solutions Px,n, Py,n and Pz,n (301) with predicted location coordinates P &cir& x,n-, P &cir& y,n- and P &cir& z,n-. The predicted location coordinates for the present fix time t=tn are formed by projecting ahead the respective preceding filtered location coordinates P &cir& x,n-1, P &cir& y,n-1 and P &cir& z,n-1 for the preceding fix time t=tn-1, using the respective average velocities sqrt(Vx,n + Vx,n-1), sqrt(Vy,n + Vy,n-1) and sqrt(Vz,n + Vz,n-1) in the time interval tn-1 /= tn.
摘要翻译：一种用于对由卫星定位系统（SATPS）确定的时变位置解坐标Px，n，Py，n和Pz，n（301）进行滤波的方法和相关算法，其以静态模式和动态模式操作（303），以减少大的不连续性并控制变化的测量误差序列可以引起位置解决方案序列变化的速率。该方法形成滤波位置坐标{P＆cir＆x，n}，{P＆cir＆y，n}和{P＆cir＆z，n}（325）的序列，以平滑以减少随更改的测量误差集而发生的不连续性。滤波后的位置坐标P＆cir＆x，n，P＆cir＆y，n和P＆cir＆z，n（325）被形成为各自的未滤波位置解Px，n，Py，n和Pz，n（301）与预测位置坐标P＆cir＆x，n-，P＆cir＆y，n-和P＆cir＆z，n-。当前固定时间t = tn的预测位置坐标是通过在先前固定的前一个滤波位置坐标P＆cir＆x，n-1，P＆cir＆y，n-1和P＆cir＆时间t = tn-1，使用相应的平均速度sqrt（Vx，n + Vx，n-1），sqrt（Vy，n + Vy，n-1）和sqrt（Vz，n + Vz，n-1）在时间间隔tn-1 / = tn。

8. 发明申请

WO1988006738A1 RELATIVE POSITION INDICATING MEANS AND METHOD 审中-公开
标题翻译：表示手段和方法的相对位置
公开(公告)号：WO1988006738A1
公开(公告)日：1988-09-07
申请号：PCT/GB1988000162
申请日：1988-03-03
申请人： CALEDONIAN AIRBORNE SYSTEMS LTD. , SAMARAI, Faris
发明人： CALEDONIAN AIRBORNE SYSTEMS LTD.
IPC分类号： G01S05/02
CPC分类号： G01S7/003 , G01S5/0009 , G01S13/93
摘要： Each of a plurality of vehicles, aircraft and/or ground stations is provided with a radio trans-receiver (6) having a corresponding plurality of channels, coupled to PPI sensors (4) and via a data processor (2) to a display VDU (1) whereby PPI information and received data may be displayed. The interrogation of one or more of the plurality by an interrogating one of the plurality enables the display of relative position of the one or more interrogated vehicles, aircraft or ground stations on the VDU of the interrogating vehicle, aircraft or ground station.
摘要翻译：多个车辆，飞行器和/或地面站中的每一个设置有具有相应多个通道的无线电转接收机（6），其耦合到PPI传感器（4）并且经由数据处理器（2）连接到显示器VDU （1），由此可以显示PPI信息和接收到的数据。多个询问中的一个或多个中的一个或多个通过询问的一个使得能够在询问车辆，飞机或地面站的VDU上显示一个或多个被询问的车辆，飞机或地面站的相对位置。

9. 发明申请

WO1986002458A1 ENHANCED GLOBAL POSITIONING SYSTEM DELTA-RANGE PROCESSING 审中-公开
标题翻译：增强全球定位系统DELTA-RANGE加工
公开(公告)号：WO1986002458A1
公开(公告)日：1986-04-24
申请号：PCT/US1985001894
申请日：1985-10-03
申请人： LITTON SYSTEMS, INC.
发明人： LITTON SYSTEMS, INC. , BROWN, Alison
IPC分类号： G01S05/02
CPC分类号： G01S19/30
摘要： A circuit (10) is shown which utilizes signals transmitted from global positioning system satellites for reception by antenna (12) to create change in phase signals. The change in phase signals are received by global positioning system (GPS) receiver (16) connected to antenna (12) and measured over a predetermined time interval, one second, for storage in storage units (18). The stored signals are applied to a Kalman filter (20) and back to the storage units (18) so that each one second time interval includes the information from all previous time intervals. This accumulated information is referred to as accumulated Delta-Range (DR) information which permits a more rapid determination of position by the circuit.

10. 发明申请

WO1998032027A1 IMPROVED REAL-TIME CLOCK APPARATUS FOR FAST ACQUISITION OF GPS SIGNALS 审中-公开
标题翻译：改进的实时时钟设备，用于快速获取GPS信号
公开(公告)号：WO1998032027A1
公开(公告)日：1998-07-23
申请号：PCT/US1997022921
申请日：1997-12-12
申请人： MOTOROLA INC.
发明人： MOTOROLA INC. , KING, Thomas, Michael , OGREN, Jeffrey, Jerome
IPC分类号： G01S05/02
CPC分类号： G01S19/235 , G01S19/24
摘要： An apparatus for improving the acquisition time of GPS signals includes a GPS receiver (21) and a real-time clock circuit (30). The GPS receiver receives GPS signals including a precise time reference signal for providing a position based upon the location of the GPS receiver. The GPS receiver also includes an internal time base (11) derived from the precise time reference signal. The real-time clock circuit is coupled to the GPS receiver for receiving a first time reference signal from the GPS receiver when the precise time reference signal of the GPS signal is available and for providing a second time reference signal to the GPS receiver when the precise time reference signal of the GPS signal is not available thereby allowing a fast acquisition time of GPS signals when the GPS signals are temporarily interrupted or not yet available.
摘要翻译：一种用于改善GPS信号的采集时间的装置包括GPS接收器（21）和实时时钟电路（30）。 GPS接收机接收GPS信号，包括精确的时间参考信号，用于基于GPS接收机的位置提供位置。 GPS接收机还包括从精确的时间参考信号导出的内部时基（11）。实时时钟电路耦合到GPS接收器，用于当GPS信号的精确时间参考信号可用时从GPS接收器接收第一时间参考信号，并且当精确的时间基准信号提供给GPS接收机时，提供第二时间参考信号 GPS信号的时间参考信号不可用，从而当GPS信号暂时中断或不可用时允许GPS信号的快速采集时间。

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