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1. 发明授权

EP1075665B1 SATELLITE POSITIONING REFERENCE SYSTEM AND METHOD 有权
标题翻译：参考的系统和方法确定系统的卫星位置
公开(公告)号：EP1075665B1
公开(公告)日：2010-02-17
申请号：EP99925554.0
申请日：1999-04-13
申请人： Snaptrack, Inc.
发明人： MOEGLEIN, Mark , SHEYNBLAT, Leonid , KRASNER, Norman, F.
IPC分类号： G01S5/14
CPC分类号： G01S5/0054 , G01S5/0036 , G01S5/0045 , G01S5/009 , G01S19/05 , G01S19/06 , G01S19/07 , G01S19/09 , G01S19/11 , G01S19/252 , G01S19/254 , G01S19/256 , G01S19/258 , G01S19/41 , G01S2205/008 , H03J7/047
摘要： Satellite ephemeris data, received from SPS satellites in view of the particular SPS reference receiver. A plurality of digital processing system are coupled to the communication network to receive the satellite ephemeris data which is transmitted through the communication network. A digital processing system receives a pseudorange data from a SPS mobile receiver and calculates position information of the SPS mobile receiver from a representation of the pseudorange data and from satellite ephemeris data received from the communication network. The digital processing system may also receive pseudorange corrections from the communication network and use these corrections to correct the pseudorange data to provide the representation of the pseudorange data. In one embodiment of this example of the invention, the mobile SPS receivers are communicatively coupled.

2. 发明授权

EP0950194B1 AN IMPROVED GPS RECEIVER UTILIZING A COMMUNICATION LINK 失效
标题翻译：改进的GPS接收机使用新闻LINK
公开(公告)号：EP0950194B1
公开(公告)日：2009-12-30
申请号：EP97952207.5
申请日：1997-11-20
申请人： Snaptrack, Inc.
发明人： KRASNER, Norman, F.
IPC分类号： G01S5/14 , G01S1/04 , H04B7/185
CPC分类号： G01S19/41 , G01S5/0036 , G01S5/0045 , G01S5/0054 , G01S5/009 , G01S19/06 , G01S19/07 , G01S19/09 , G01S19/11 , G01S19/235 , G01S19/252 , G01S19/254 , G01S19/256 , G01S19/258 , G01S2205/008 , G06F2221/2111 , H01Q1/273 , H01Q21/28 , H03D7/163 , H03J1/0008 , H03J7/04 , H03J7/047 , H03J7/06 , H03J2200/11 , H04B1/00 , H04B1/0007 , H04B1/28 , H04B1/3805
摘要： Methods and apparatuses for deriving an approximate Doppler for a satellite positioning system (SPS) receiver from an approximate location which is obtained from a cellular communication system information source. In one embodiment, an approximate location of the SPS receiver is derived from the information source and this approximation location is used to determine approximate Dopplers to a plurality of SPS satellites at a given time. The approximate Dopplers are then used to reduce processing time in either determining pseudoranges to the SPS satellites or acquiring signals from the SPS satellites. In another aspect of the invention, a reference signal is used to provide a local oscillator signal which is used to acquire SPS signals in an SPS receiver. This reference signal is extracted from a data signal modulated on a carrier frequency. The data signal on the carrier frequency is transmitted from, in one example, a wireless cell site which is communicating with the SPS receiver which has a cellular based communication receiver.

3. 发明授权

EP1073914B1 METHOD AND APPARATUS FOR DETERMINING TIME IN A SATELLITE POSITIONING SYSTEM 无效
标题翻译：方法和装置确定时间卫星定位系统
公开(公告)号：EP1073914B1
公开(公告)日：2003-07-23
申请号：EP99925551.6
申请日：1999-04-12
申请人： Snaptrack, Inc.
发明人： SHEYNBLAT, Leonid , KRASNER, Norman, F.
IPC分类号： G01S5/14 , G01S5/00
CPC分类号： G01S5/0063 , G01S5/0009 , G01S5/0036 , G01S5/0045 , G01S19/09 , G01S19/11 , G01S19/23 , G01S19/235 , G01S19/24 , G01S19/246 , G01S19/25 , G01S19/256 , G01S19/37 , G01S19/39 , G01S19/42 , G04R20/04 , G04R20/06

4. 发明公开

EP1073914A2 METHOD AND APPARATUS FOR DETERMINING TIME IN A SATELLITE POSITIONING SYSTEM 无效
标题翻译：方法和装置确定时间卫星定位系统
公开(公告)号：EP1073914A2
公开(公告)日：2001-02-07
申请号：EP99925551.6
申请日：1999-04-12
申请人： Snaptrack, Inc.
发明人： SHEYNBLAT, Leonid , KRASNER, Norman, F.
IPC分类号： G01S5/14 , G01S5/00
CPC分类号： G01S5/0063 , G01S5/0009 , G01S5/0036 , G01S5/0045 , G01S19/09 , G01S19/11 , G01S19/23 , G01S19/235 , G01S19/24 , G01S19/246 , G01S19/25 , G01S19/256 , G01S19/37 , G01S19/39 , G01S19/42 , G04R20/04 , G04R20/06
摘要： A method and apparatus for determining a reference time associated with a satellite positioning system. In turn, the reference time, in one embodiment, may be used to determine other navigational information. Such navigational information may include, for example, the location/position of a satellite positioning system (SPS) receiver. In one embodiment, a relative velocity between an SPS receiver and a set of one or more satellites is used to determine an offset between time as indicated by the SPS receiver and the reference time. According to another embodiment of the invention, an error statistic is used to determine the reference time. According to yet another embodiment of the invention, two records, each representing at least a portion of a satellite message, are compared to determine time. In one implementation, the SPS receiver is mobile and operates in conjunction with a basestation to determine time and/or other navigational information according to one or a combination of the methods described.

5. 发明授权

EP1108223B9 METHOD AND APPARATUS FOR ACQUIRING SATELLITE POSITIONING SYSTEM SIGNALS 有权
标题翻译：方法和系统检测卫星定位系统信号的
公开(公告)号：EP1108223B9
公开(公告)日：2011-11-02
申请号：EP99938750.9
申请日：1999-07-15
申请人： Snaptrack, Inc.
发明人： KRASNER, Norman, F.
IPC分类号： G01S5/14 , G01S5/00
CPC分类号： G01S19/252 , G01S5/0027 , G01S19/06 , G01S19/07 , G01S19/09 , G01S19/235 , G01S19/28 , G01S19/30 , G01S19/46 , G01S2205/008 , H03J7/04 , H03J7/047 , H04B1/00 , H04B1/0007 , H04B1/28 , H04B1/3805
摘要： A method and an apparatus which acquire satellite positioning system (SPS) signals in an SPS receiver. Information on time of day, approximate receiver location, and satellite positions are used to reduce the time to search and acquire signals from one or more SPS satellites. In an example of a method of the invention, a first pseudorange to a first SPS satellite is determined, and an approximate location of the SPS receiver is determined. An estimated pseudorange for a second pseudorange to a second SPS satellite is determined from the approximate location and a satellite position of the second SPS satellite. The SPS receiver then searches for SPS signals from the second SPS satellite in a range determined by the estimated pseudorange. Typically, this method reduces the search time to initially acquire SPS signals from the second SPS satellite, and the estimated pseudorange is not based on a previously determined pseudorange for said second SPS satellite. In a particular example of the invention, the approximate location is determined from a cell based information source which correlates an identification of each of various wireless cell sites with an approximate location for objects within a cell of a wireless cell based communication system, such as a cellular (or cell based) telephone system. In other examples of the invention, relatively precise time of day information may be used with information indicating satellite positions and information indicating the approximate location to determine an estimated pseudorange for a first SPS satellite to be acquired.

6. 发明授权

EP1108223B1 METHOD AND APPARATUS FOR ACQUIRING SATELLITE POSITIONING SYSTEM SIGNALS 有权
标题翻译：用于获取卫星定位系统信号的方法和设备
公开(公告)号：EP1108223B1
公开(公告)日：2011-01-26
申请号：EP99938750.9
申请日：1999-07-15
申请人： Snaptrack, Inc.
发明人： KRASNER, Norman, F.
IPC分类号： G01S5/14 , G01S5/00
CPC分类号： G01S19/252 , G01S5/0027 , G01S19/06 , G01S19/07 , G01S19/09 , G01S19/235 , G01S19/28 , G01S19/30 , G01S19/46 , G01S2205/008 , H03J7/04 , H03J7/047 , H04B1/00 , H04B1/0007 , H04B1/28 , H04B1/3805
摘要： A method and an apparatus which acquire satellite positioning system (SPS) signals in an SPS receiver. Information on time of day, approximate receiver location, and satellite positions are used to reduce the time to search and acquire signals from one or more SPS satellites. In an example of a method of the invention, a first pseudorange to a first SPS satellite is determined, and an approximate location of the SPS receiver is determined. An estimated pseudorange for a second pseudorange to a second SPS satellite is determined from the approximate location and a satellite position of the second SPS satellite. The SPS receiver then searches for SPS signals from the second SPS satellite in a range determined by the estimated pseudorange. Typically, this method reduces the search time to initially acquire SPS signals from the second SPS satellite, and the estimated pseudorange is not based on a previously determined pseudorange for said second SPS satellite. In a particular example of the invention, the approximate location is determined from a cell based information source which correlates an identification of each of various wireless cell sites with an approximate location for objects within a cell of a wireless cell based communication system, such as a cellular (or cell based) telephone system. In other examples of the invention, relatively precise time of day information may be used with information indicating satellite positions and information indicating the approximate location to determine an estimated pseudorange for a first SPS satellite to be acquired.
摘要翻译：一种在SPS接收机中获取卫星定位系统（SPS）信号的方法和设备。有关一天中的时间，近似接收机位置和卫星位置的信息用于减少从一个或多个SPS卫星搜索和获取信号的时间。在本发明的方法的示例中，确定第一SPS卫星的第一伪距，并确定SPS接收机的大致位置。从第二SPS卫星的近似位置和卫星位置确定针对第二SPS卫星的第二伪距的估计伪距。 SPS接收机然后在由估计的伪距确定的范围内搜索来自第二SPS卫星的SPS信号。典型地，该方法减少搜索时间以初始获取来自第二SPS卫星的SPS信号，并且估计的伪距不基于之前针对所述第二SPS卫星确定的伪距。在本发明的特定示例中，大致位置是从基于小区的信息源确定的，其将各种无线小区站点中的每一个的标识与基于无线小区的通信系统的小区内的对象的近似位置相关联，诸如蜂窝（或基于小区）的电话系统。在本发明的其他例子中，可以使用指示卫星位置的信息和指示近似位置的信息来确定针对要采集的第一SPS卫星的估计伪距的信息，来使用相对精确的一天中的时间信息。

7. 发明授权

EP1076834B1 METHOD AND APPARATUS FOR OPERATING A SATELLITE POSITIONING SYSTEM RECEIVER 有权
标题翻译：方法和一种用于操作SATELLITENPOSITIONSBESTIMMUNGSSEMPFÄNGERS
公开(公告)号：EP1076834B1
公开(公告)日：2007-10-10
申请号：EP99927072.1
申请日：1999-04-13
申请人： Snaptrack, Inc.
发明人： KRASNER, Norman, F.
IPC分类号： G01S5/14 , G01S5/00
CPC分类号： G01S19/41 , G01S5/0036 , G01S19/08 , G01S19/09
摘要： A method and an apparatus for operating a satellite positioning system (SPS) receiver in a client/server architecture. In one example of a method, a first plurality of pseudoranges is determined at a first time and a second plurality of pseudoranges is determined at a second time which is after the first time. The first and the second pluralities of pseudoranges are stored. After the second time, the first and the second pluralities of pseudoranges are transmitted to a location server, normally in one transmission. The location server then determines a first position from the first plurality of pseudoranges and a second position from the second plurality of pseudoranges. In one particular example, the first and second pseudoranges are transmitted in response to a predetermined type of event, and the location server stores a collection of differential GPS data which has been collected over time.

8. 发明授权

EP0855041B1 A GPS RECEIVER AND METHOD FOR PROCESSING GPS SIGNALS 失效
标题翻译： GPS接收器和一种用于处理GPS信号
公开(公告)号：EP0855041B1
公开(公告)日：2002-12-18
申请号：EP96936293.8
申请日：1996-10-08
申请人： Snaptrack, Inc.
发明人： KRASNER, Norman, F.
IPC分类号： G01S5/14 , G01S1/04
CPC分类号： H04B1/3805 , G01S5/0027 , G01S5/0036 , G01S5/0054 , G01S19/07 , G01S19/09 , G01S19/11 , G01S19/235 , G01S19/252 , G01S19/254 , G01S19/256 , G01S19/258 , G01S19/34 , G01S19/41 , G01S2205/008 , G06F2221/2111 , H01Q1/273 , H01Q21/28 , H03D7/163 , H03J7/06 , H03J2200/11
摘要： A global positioning system (GPS) receiver has first circuitry for receiving and processing pseudorandom sequences transmitted by a number of GPS satellites. The first circuitry is configured to perform conventional correlation operations on the received pseudorandom sequences to determine pseudoranges from the GPS receiver to the GPS satellites. The GPS receiver also includes second circuitry coupled to the first circuitry. The second circuitry is configured to receive and process the pseudorandom sequences during blockage conditions. The second circuitry processes the pseudorandom sequences by digitizing and storing a predetermined record length of the received sequences and then performing fast convolution operations on the stored data to determine the pseudoranges. The GPS receiver may have a common circuitry for receiving GPS signals from in view satellites and downconverting the RF frequency of the received GPS signals to an intermediate frequency (IF). The IF signals are split into two signal paths, a first of which provides the conventional correlation processing to calculate the pseudoranges. During blockage conditions, the IF signal is passed to the second signal path wherein the IF signals are digitized and stored in memory and later processed using the fast convolution operations to provide the pseudoranges. Alternative arrangements for the two signal paths include separate downconverters or shared digitizers. One embodiment provides both signal paths on a single integrated circuit with shared circuitry executing computer-readable instructions to perform GPS signal processing appropriate to the reception conditions.

9. 发明公开

EP0950194A2 AN IMPROVED GPS RECEIVER UTILIZING A COMMUNICATION LINK 失效
标题翻译：改进的GPS接收机使用新闻LINK
公开(公告)号：EP0950194A2
公开(公告)日：1999-10-20
申请号：EP97952207.0
申请日：1997-11-20
申请人： Snaptrack, Inc.
发明人： KRASNER, Norman, F.
IPC分类号： G01S1 , G01S5 , G01S19 , H01Q1 , H01Q21 , H03J7 , H04B1 , H04B7 , G06F1 , H03D7
CPC分类号： G01S19/41 , G01S5/0036 , G01S5/0045 , G01S5/0054 , G01S5/009 , G01S19/06 , G01S19/07 , G01S19/09 , G01S19/11 , G01S19/235 , G01S19/252 , G01S19/254 , G01S19/256 , G01S19/258 , G01S2205/008 , G06F2221/2111 , H01Q1/273 , H01Q21/28 , H03D7/163 , H03J1/0008 , H03J7/04 , H03J7/047 , H03J7/06 , H03J2200/11 , H04B1/00 , H04B1/0007 , H04B1/28 , H04B1/3805
摘要： Methods and apparatuses for deriving an approximate Doppler for a satellite positioning system (SPS) receiver from an approximate location which is obtained from a cellular communication system information source. In one embodiment, an approximate location of the SPS receiver is derived from the information source and this approximation location is used to determine approximate Dopplers to a plurality of SPS satellites at a given time. The approximate Dopplers are then used to reduce processing time in either determining pseudoranges to the SPS satellites or acquiring signals from the SPS satellites. In another aspect of the invention, a reference signal is used to provide a local oscillator signal which is used to acquire SPS signals in an SPS receiver. This reference signal is extracted from a data signal modulated on a carrier frequency. The data signal on the carrier frequency is transmitted from, in one example, a wireless cell site which is communicating with the SPS receiver which has a cellular based communication receiver.

10. 发明授权

EP1051638B1 REDUCING CROSS-INTERFERENCE IN A COMBINED GPS RECEIVER AND COMMUNICATION SYSTEM 有权
标题翻译：干扰抑制在组合的GPS接收器和通信系统
公开(公告)号：EP1051638B1
公开(公告)日：2010-02-24
申请号：EP99903189.1
申请日：1999-01-19
申请人： Snaptrack, Inc.
发明人： KRASNER, Norman, F.
IPC分类号： G01S5/14 , G01S1/04 , H04B1/38
CPC分类号： G01S19/21 , H04B1/109 , H04B1/3805
摘要： A method and apparatus is disclosed for reducing cross-interference in a combined satellite positioning system receiver and communication transceiver device. A control signal is transmitted from the communication transceiver to the satellite positioning system receiver when the communication transceiver transmits data at a high power level over a communication link. The control signal causes satellite positioning system signals from satellites to be blocked from the receiving circuits of the satellite positioning system receiver, or to be disregarded by the processing circuits of the satellite positioning system receiver.

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