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1. 发明授权

US06546040B1 GPS receiver having improved signal acquisition at a low signal to noise ratio 有权
标题翻译： GPS接收机在低信噪比下具有改进的信号采集
公开(公告)号：US06546040B1
公开(公告)日：2003-04-08
申请号：US09295567
申请日：1999-04-21
申请人： Ralph F. Eschenbach
发明人： Ralph F. Eschenbach
IPC分类号： H04B169
CPC分类号： H04B1/7077 , G01S19/09 , G01S19/246 , G01S19/29
摘要： A GPS receiver having a fast acquisition of a GPS signal having a low signal-to-noise ratio. The GPS receiver adjusts a local frequency for iteratively downconverting raw GPS signal samples to baseband GPS signal code data, combining a plurality of code epochs of the GPS signal code data in chunks and super chunks for providing representative code epochs, and correlates the representative code epochs to a replica code epoch for providing correlation times. A microcontroller processes the correlation times for providing the frequency corrections and computes a GPS pseudorange when the error in the corrected local frequency is less than a threshold. The GPS pseudoranges for several GPS satellites are transmitted back to the base for computing the GPS-based location of the GPS receiver.
摘要翻译：具有快速采集具有低信噪比的GPS信号的GPS接收机。 GPS接收机调整本地频率，将原始GPS信号采样下转换成基带GPS信号码数据，组合多个码元中的GPS信号码数据的代码周期和超组块，以提供代表性码元，并将代表码历元到用于提供相关时间的复制代码时期。微处理器处理相关时间以提供频率校正，并且当校正的本地频率的误差小于阈值时计算GPS伪距。几个GPS卫星的GPS伪距被发回到基地，用于计算GPS接收机的基于GPS的位置。

2. 发明授权

US4162531A Method and apparatus for programmable and remote numeric control and calibration of electronic instrumentation 失效
标题翻译：用于可编程和远程数字控制和电子仪器校准的方法和装置
公开(公告)号：US4162531A
公开(公告)日：1979-07-24
申请号：US908032
申请日：1978-05-22
申请人： France Rode , Peter Lindes , Ralph F. Eschenbach , Zvonko A. Fazarinc
发明人： France Rode , Peter Lindes , Ralph F. Eschenbach , Zvonko A. Fazarinc
IPC分类号： G01R31/28 , G01R35/00 , G06F3/14 , H01J29/00
CPC分类号： G01R35/002 , G01R31/2834
摘要： The present invention provides programmable, remote and automatic numeric control and calibration of analog signal measuring and generating apparatus. Digital values for control signals for control of gain, sensitivity, frequency and the like and for calibration are stored and may be easily modified to follow complex control and calibration functions. Conventional controls are replaced by pushbuttons which initiate calculation of digital control signals for controlling the transfer function of variable elements of the apparatus. Conventional meters and dials are replaced by digital readout devices for indicating operational parameters such as amplitudes, sensitivities, frequencies and the like. Digital values for calibration factors and parameter control settings also may be recorded on suitable recording media for use under recurring conditions and environments.
摘要翻译：本发明提供了模拟信号测量和发生装置的可编程，远程和自动数字控制和校准。用于控制增益，灵敏度，频率等和校准的控制信号的数字值被存储，并且可以容易地修改以遵循复杂的控制和校准功能。常规控制由按钮代替，该按钮启动用于控制装置的可变元件的传递函数的数字控制信号的计算。传统的仪表和刻度盘被数字读出装置所取代，用于指示诸如振幅，灵敏度，频率等的操作参数。校准因子和参数控制设置的数字值也可以记录在合适的记录介质上，以便在循环条件和环境下使用。

3. 发明授权

US06727848B2 Global positioning system using almanac data for a fast time to first fix 有权
标题翻译：全球定位系统使用年历数据快速首次修复
公开(公告)号：US06727848B2
公开(公告)日：2004-04-27
申请号：US10208059
申请日：2002-07-30
申请人： Ralph F. Eschenbach
发明人： Ralph F. Eschenbach
IPC分类号： H04B7185
CPC分类号： G01S19/09 , G01S19/24 , G01S19/41
摘要： A system using coarse GPS orbital parameters for providing a precise GPS location. The system includes a GPS reference receiver and a GPS user receiver. Coarse locations-in-space of GPS satellites are computed from almanac or old ephemeris data. In a first embodiment the GPS user receiver uses DGPS corrections based upon the same coarse orbital parameters for providing a precise DGPS user location. In a second embodiment the GPS user receiver computes a coarse location from the coarse orbital parameters; and the GPS reference receiver recalculates the user pseudoranges using the same coarse orbital parameters and then uses the recalculated user pseudoranges for providing a more accurate user location.
摘要翻译：一种使用粗略的GPS轨道参数来提供精确GPS位置的系统。该系统包括GPS参考接收机和GPS用户接收机。 GPS卫星的空间中的粗略位置是从年历或旧星历数据计算出来的。在第一实施例中，GPS用户接收机使用基于相同粗略轨道参数的DGPS校正来提供精确的DGPS用户位置。在第二实施例中，GPS用户接收机从粗略轨道参数计算粗略位置; 并且GPS参考接收机使用相同的粗略轨道参数重新计算用户伪距，然后使用重新计算的用户伪距来提供更准确的用户位置。

4. 发明授权

US06181253B2 Flexible monitoring of location and motion 失效
公开(公告)号：US06181253B2
公开(公告)日：2001-01-30
申请号：US09019492
申请日：1998-02-05
申请人： Ralph F. Eschenbach , James M. Janky
发明人： Ralph F. Eschenbach , James M. Janky
IPC分类号： G08B2300
CPC分类号： G08B21/245 , G08B21/0261 , G08B21/22
摘要： Method and apparatus for monitoring the present location of a person (“confinee”) who is to be confined to a designated site, which site can have a diameter as small as a few meters or as large as several kilometers. The present location of the confinee is checked at selected time intervals with time periods ranging from one second to thousands of seconds, as desired. The confinee wears a location-determining (“LD”) unit that receives electromagnetic signals that contain information allowing determination of the present location of the LD unit, and thus of the confinee, from three or more non-collinear outdoor LD signal sources and from three or more non-collinear indoor LD signal sources. The indoor LD signal sources may be radiowave transmitters. The outdoor LD signal sources may be transmitters for a Loran, Omega, Decca, Tacan, JTIDS Relnav or PLRS or similar ground-based system, or transmitters for a satellite positioning system, such as OPS or GLONASS. The relative phases or transmission times for the signals from each indoor LD signal source are determined and provided for the LD unit. The present location or change location of the LD unit is determined and compared with the permitted site location coordinates at a sequence of selected times to determine if the confinee is present at the site at such times. The LD unit issues an alarm signal if the confinee is not on the site and has not arranged beforehand to leave the permitted site for a selected time interval, The permitted site can be redefined, for a selected time interval, to include the first permitted site, a second permitted site and a corridor extending between the first and second permitted sites for a selected time interval, after which the permitted site can be changed again to include only the first or the second permitted site or a portion thereof. This allows the confinee to temporarily leave the original permitted site to seek medical attention or to attend to other needs, or to be moved permanently to the second site. The permitted site can be redefined at any time and for any subsequent time interval. One or more exclusion sites can be designated where the confinee is not permitted to go at any time.

5. 发明授权

US5820080A Precision equivalent landing system using gps and an altimeter 失效
标题翻译：使用gps和高度计的精密等效着陆系统
公开(公告)号：US5820080A
公开(公告)日：1998-10-13
申请号：US615837
申请日：1996-03-14
申请人： Ralph F. Eschenbach
发明人： Ralph F. Eschenbach
IPC分类号： G05D1/06 , B64C13/18
CPC分类号： G05D1/0676
摘要： A precision equivalent landing system. In one embodiment, a position determining system is coupled to an aircraft. The position determining system generates lateral position information of the aircraft with respect to a landing approach path. An altimeter is also coupled to the aircraft. The altimeter generates vertical position information of the aircraft with respect to the landing approach path. A graphic display disposed within the aircraft concurrently displays a visual representation of the lateral position of the aircraft with respect to the landing approach path and the vertical position of the aircraft with respect to the landing approach path. In so doing, the present invention provides both relative position and altitude of an incoming aircraft with respect to a landing approach path. Thus, the present invention provides a precision equivalent landing system without requiring the equipment and expense associated with ILS or FAA MLS precision landing systems.
摘要翻译：精密等效着陆系统。在一个实施例中，位置确定系统耦合到飞行器。位置确定系统相对于着陆进场路径产生飞机的横向位置信息。高度计也与飞机相连。高度计相对于着陆进场路径产生飞行器的垂直位置信息。布置在飞行器内的图形显示器同时显示飞机相对于着陆进场路径的横向位置和飞机相对于着陆进场路径的垂直位置的视觉表示。在这样做时，本发明提供了相对于着陆进场路径的进入飞行器的相对位置和高度。因此，本发明提供了精确的等效着陆系统，而不需要与ILS或FAA MLS精确着陆系统相关联的设备和费用。

6. 发明授权

US06559793B1 Differential global positioning system using coarse GPS data for a fast time to a precise first fix 有权
标题翻译：差分全球定位系统使用粗糙的GPS数据快速准确地进行第一次修复
公开(公告)号：US06559793B1
公开(公告)日：2003-05-06
申请号：US10003862
申请日：2001-11-02
申请人： Ralph F. Eschenbach
发明人： Ralph F. Eschenbach
IPC分类号： H04B7185
CPC分类号： G01S19/07 , G01S19/41
摘要： A differential global positioning system (DGPS) using coarse data for the locations-in-space of GPS satellites for ranging to the GPS satellites and then determining a precise differentially corrected GPS location of a GPS user receiver. The coarse GPS data can be GPS almanac data or non-current GPS ephemeris data as long as the same data is used by both a GPS reference receiver and the GPS user receiver.
摘要翻译：差分全球定位系统（DGPS），使用粗略数据将GPS卫星的空间位置测距到GPS卫星，然后确定GPS用户接收机的精确差分校正的GPS位置。只要GPS参考接收机和GPS用户接收机都使用相同的数据，粗略的GPS数据可以是GPS历书数据或非当前GPS星历数据。

7. 发明授权

US5969670A Inexpensive monitoring technique for achieving high level integrity monitoring for differential GPS 失效
标题翻译：实现差分GPS高水平完整性监控的廉价监控技术
公开(公告)号：US5969670A
公开(公告)日：1999-10-19
申请号：US010812
申请日：1998-01-22
申请人： Rudolph M. Kalafus , Ralph F. Eschenbach
发明人： Rudolph M. Kalafus , Ralph F. Eschenbach
IPC分类号： G01S1/00 , G01S5/14 , G01S19/48 , H04B7/185
CPC分类号： G01S19/20 , G01S19/41
摘要： A dual global positioning system (GPS) receiver navigation system. The system of the present invention includes a primary GPS receiver adapted to determine a first position. The primary GPS receiver is certified to a first integrity level and is further adapted to provide GPS navigation data to an external device. The system of the present invention also includes a secondary GPS receiver coupled to the primary GPS receiver. The secondary GPS receiver is certified to a second integrity level having less stringent requirements than the first integrity level. The secondary GPS receiver is adapted to determine a second position and monitor the primary GPS receiver to detect a fault condition by comparing the first position and the second position, such that the GPS navigation data is provided in accordance with the first certification level regardless of the second integrity level of the secondary GPS receiver.
摘要翻译：双重全球定位系统（GPS）接收机导航系统。本发明的系统包括适于确定第一位置的主GPS接收机。主要GPS接收机被认证为第一完整性级别，并且还适于向外部设备提供GPS导航数据。本发明的系统还包括耦合到主GPS接收机的辅助GPS接收机。次级GPS接收机被认证为具有比第一完整性级别更不严格要求的第二完整性级别。辅助GPS接收器适于确定第二位置，并通过比较第一位置和第二位置来监测主要GPS接收机以检测故障状况，使得根据第一认证级别提供GPS导航数据，而不管二级GPS接收机的第二完整性级别。

8. 发明授权

US4847862A Global positioning system course acquisition code receiver 失效
标题翻译：全球定位系统课程采集码接收机
公开(公告)号：US4847862A
公开(公告)日：1989-07-11
申请号：US178980
申请日：1988-04-07
申请人： Paul E. Braisted , Ralph F. Eschenbach
发明人： Paul E. Braisted , Ralph F. Eschenbach
IPC分类号： G01S3/48 , G01S5/14 , G01S19/24 , G01S19/29 , G01S19/36 , G01S19/54 , H04B1/7075
CPC分类号： H04B1/7075 , G01S19/24 , G01S19/36 , G01S19/54 , G01S3/46 , G01S3/48
摘要： Two receiver channels each driven by a common local oscillator signal are employed. The signal developed by the first receiver channel is used to drive in phase (I) and quadrature (Q) counters of a Castas-loop, which phase-locks to the signal. The signal developed by the second receiver channel is used to drive another pair of in phase (I) and quadrature (Q) counters, which develop signals from which heading information is calculated.

9. 发明授权

US4099240A Method and apparatus for programmable and remote numeric control and calibration of electronic instrumentation 失效
标题翻译：用于可编程和远程数字控制和电子仪器校准的方法和装置
公开(公告)号：US4099240A
公开(公告)日：1978-07-04
申请号：US759308
申请日：1977-01-14
申请人： France Rode , Peter Lindes , Ralph F. Eschenbach , Zvonko A. Fazarinc
发明人： France Rode , Peter Lindes , Ralph F. Eschenbach , Zvonko A. Fazarinc
IPC分类号： G08C15/06 , G01R31/28 , G08C25/00 , G06F3/14 , H01J29/00
CPC分类号： G01R31/2834
摘要： The present invention provides programmable, remote and automatic numeric control and calibration of analog signal measuring and generating apparatus. Digital values for control signals for control of gain, sensitivity, frequency and the like and for calibration are stored and may be easily modified to follow complex control and calibration functions. Conventional controls are replaced by pushbuttons which initiate calculation of digital control signals from controlling the transfer function of variable elements of the apparatus. Conventional meters and dials are replaced by digital readout devices for indicating operational parameters such as amplitudes, sensitivities, frequencies and the like. Digital values for calibration factors and parameter control settings also may be recorded on suitable recording media for use under recurring conditions and environments.
摘要翻译：本发明提供了模拟信号测量和发生装置的可编程，远程和自动数字控制和校准。用于控制增益，灵敏度，频率等和校准的控制信号的数字值被存储，并且可以容易地修改以遵循复杂的控制和校准功能。常规控制由按钮代替，该按钮通过控制装置的可变元件的传递函数来启动数字控制信号的计算。传统的仪表和刻度盘被数字读出装置所取代，用于指示诸如振幅，灵敏度，频率等的操作参数。校准因子和参数控制设置的数字值也可以记录在合适的记录介质上，以便在循环条件和环境下使用。

10. 发明授权

US06731672B1 GPS receiver having improved signal acquisition at a low signal to noise ratio 有权
标题翻译： GPS接收机在低信噪比下具有改进的信号采集
公开(公告)号：US06731672B1
公开(公告)日：2004-05-04
申请号：US10368328
申请日：2003-02-18
申请人： Ralph F. Eschenbach
发明人： Ralph F. Eschenbach
IPC分类号： H04B169
CPC分类号： H04B1/7077 , G01S19/09 , G01S19/246 , G01S19/29
摘要： A GPS receiver having a fast acquisition of a GPS signal having a low signal-to-noise ratio. The GPS receiver uses an adjustable local frequency for iteratively downconvertig raw GPS signal samples to baseband GPS signal code data, combining a plurality of code epochs of the GPS signal code data in chunks and superchunks for providing representative code epochs, and correlates the representative code epochs to a replica code epoch for providing correlation times. Two or more correlation times are used to determine a correlation time difference. The correlation time difference is indicative of a residual frequency error. The error is used for correcting the local frequency. GPS pseudoranges are computed from the correlation times when the residual frequency error from the corrected local frequency is below a threshold.
摘要翻译：具有快速采集具有低信噪比的GPS信号的GPS接收机。 GPS接收机使用可调节的本地频率来将原始GPS信号样本迭代地下转换为基带GPS信号码数据，将组合中的GPS信号码数据的多个码纪元和超级块组合起来，以提供代表性代码纪元，并将代表代码历元到用于提供相关时间的复制代码时期。使用两个或多个相关时间来确定相关时间差。相关时间差表示残留频率误差。该错误用于校正本地频率。当来自校正的本地频率的残余频率误差低于阈值时，从相关时间计算GPS伪距。

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