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1. 发明专利

JP2009162771A Improvement of method for estimating tdoa and fdoa in wireless location system 审中-公开
标题翻译：无线定位系统TDOA和FDOA估计方法的改进
公开(公告)号：JP2009162771A
公开(公告)日：2009-07-23
申请号：JP2009052961
申请日：2009-03-06
申请人： Massachusetts Inst Of Technol , Trueposition Inc , トゥルーポジション・インコーポレーテッド , マサチューセッツ・インスティテュート・オブ・テクノロジー
发明人： ANDERSON ROBERT J , ROGERS ALAN E E , STILP LOUIS A
IPC分类号： G01S5/06 , G01S1/02 , G01S5/10 , G01S19/09 , G01S19/46 , H04W64/00
CPC分类号： H04W64/00 , G01S1/026 , G01S5/10
摘要： PROBLEM TO BE SOLVED: To provide a method for determining time difference of arrival (TDOA) and/or frequency difference of arrival (FDOA) to limit frequency and time period for examining presence of the signal to be located. SOLUTION: A method, used for locating a mobile transmitter, includes providing a set of cross-correlation values, wherein each cross-correlation value is associated with a corresponding value of the TDOA and/or FDOA estimate and is produced by cross-correlating a reference signal with a cooperating signal (Fig.5, not shown). The reference signal comprises a copy of a signal transmitted by the mobile transmitter as received at a first antenna and the cooperating signal comprises a copy of the same signal as received at a second antenna. The method further includes determining a most likely range of TDOA and/or FDOA estimates, and then identifying an optimal cross-correlation value within a subset (Fig.10) of cross-correlation values corresponding to the most likely range of TDOA and/or FDOA estimates. The TDOA and/or FDOA value corresponding to the optimal cross-correlation value is then employed for calculating the location of the mobile transmitter. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于确定到达时间差（TDOA）和/或频差（FDOA）的方法，以限制用于检测待定信号的存在的频率和时间段。解决方案：用于定位移动发射机的方法包括提供一组互相关值，其中每个互相关值与TDOA和/或FDOA估计的对应值相关联，并且由交叉 - 将参考信号与协作信号相关（图5，未示出）。参考信号包括由第一天线接收的由移动发射机发送的信号的副本，并且协作信号包括在第二天线处接收到的相同信号的副本。该方法还包括确定TDOA和/或FDOA估计的最可能范围，然后确定与TDOA的最可能范围对应的互相关值的子集（图10）内的最佳互相关值和/或 FDOA估计。然后采用对应于最佳互相关值的TDOA和/或FDOA值来计算移动发射机的位置。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2013057668A Improvement of method for estimating tdoa and fdoa in wireless location system 审中-公开
标题翻译：无线定位系统TDOA和FDOA估计方法的改进
公开(公告)号：JP2013057668A
公开(公告)日：2013-03-28
申请号：JP2012216896
申请日：2012-09-28
申请人： Trueposition Inc , トゥルーポジション・インコーポレーテッド , Massachusetts Institute Of Technology , マサチューセッツインスティテュートオブテクノロジー
发明人： ANDERSON ROBERT J , ROGERS ALAN E E , STILP LOUIS A
IPC分类号： G01S5/06 , G01S1/02 , G01S5/10 , G01S19/09 , G01S19/46 , H04W64/00
CPC分类号： H04W64/00 , G01S1/026 , G01S5/10
摘要： PROBLEM TO BE SOLVED: To provide a method for determining arrival time difference and/or arrival frequency difference to limit a frequency and a time period for testing the existence of a location detection object signal.SOLUTION: A method used when detecting the location of a mobile transmitter includes to calculate a set of cross correlation values, corresponding TDOA and/or FDOA estimate values are associated with each cross correlation value, and each cross correlation value is calculated by correlating a reference signal with a cooperation signal (Fig. 5). The reference signal is composed of a copy of a signal transmitted by the mobile transmitter and received by a first antenna, and the cooperation signal is composed of a copy of the same signal received by a second antenna. The method further includes to determine a maximum likelihood range of TDOA and/or FDOA estimate values and then, to specify an optimum cross correlation value in a subset (Fig. 10) of cross correlation values corresponding to the maximum likelihood range of the TDOA and/or FDOA estimate values. Next, the TDOA and/or FDOA values corresponding to the optimum cross correlation value are used to calculate the location of the mobile transmitter.
摘要翻译：要解决的问题：提供一种用于确定到达时间差和/或到达频率差以限制用于测试位置检测对象信号的存在的频率和时间段的方法。解决方案：当检测到移动发射机的位置时使用的方法包括计算一组互相关值，相应的TDOA和/或FDOA估计值与每个互相关值相关联，并且每个互相关值由将参考信号与协作信号相关联（图5）。参考信号由移动发射机发送并由第一天线接收的信号的副本组成，协作信号由第二天线接收的相同信号的副本组成。该方法还包括确定TDOA和/或FDOA估计值的最大似然范围，然后，在与TDOA的最大似然范围相对应的互相关值的子集（图10）中指定最佳互相关值，以及 /或FDOA估计值。接下来，使用对应于最佳互相关值的TDOA和/或FDOA值来计算移动发射机的位置。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2010148112A Calibration for wireless location system 有权
标题翻译：无线定位系统校准
公开(公告)号：JP2010148112A
公开(公告)日：2010-07-01
申请号：JP2009288640
申请日：2009-12-21
申请人： Trueposition Inc , トゥルーポジション・インコーポレーテッド
发明人： STILP LOUIS A
IPC分类号： G01S19/25 , H04W64/00 , G01S1/02 , G01S1/24 , G01S3/02 , G01S5/02 , G01S5/06 , G01S19/03 , G01S19/09 , G01S19/11 , G01S19/46 , G01S19/48 , H04W4/22
CPC分类号： H04W64/00 , G01S1/026 , G01S5/02 , G01S5/021 , G01S5/0215 , G01S5/0221 , G01S5/0252 , G01S5/0268 , G01S5/0284 , G01S5/06 , G01S2205/006 , G01S2205/008 , H04W4/22 , H04W76/007 , Y02D70/00 , Y02D70/1222 , Y02D70/1224 , Y02D70/1242 , Y02D70/144 , Y02D70/164
摘要： PROBLEM TO BE SOLVED: To provide a method and device for calibrating a wireless location system. SOLUTION: An external calibration method includes the steps of: transmitting a first reference signal from a reference transmitter; receiving the first reference signal at first and second receiver systems; determining a first error value by comparing a measured TDOA (or FDOA) value with a theoretical TDOA (or FDOA) value; and utilizing the first error value to correct subsequent TDOA (or FDOA) measurements associated with a mobile transmitter to be located. An internal calibration method includes the steps of: injecting a comb signal into the first receiver system; utilizing the comb signal to obtain an estimate of the manner in which the transfer function varies across the bandwidth of the first receiver system; and utilizing the estimate to mitigate the effects of the variation of the first transfer function on the time measurement made by the first receiver system. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于校准无线定位系统的方法和装置。解决方案：外部校准方法包括以下步骤：从参考发射机发送第一参考信号; 在第一和第二接收机系统处接收第一参考信号; 通过将测量的TDOA（或FDOA）值与理论TDOA（或FDOA）值进行比较来确定第一误差值; 以及利用第一误差值来校正与要定位的移动发射机相关联的后续TDOA（或FDOA）测量。内部校准方法包括以下步骤：将梳状信号注入到第一接收机系统中; 利用梳状信号获得传递函数在第一接收机系统的带宽上变化的方式的估计; 以及利用估计来减轻第一传递函数的变化对由第一接收机系统进行的时间测量的影响。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2011130491A Multiple pass location processor 有权
标题翻译：多通位置处理器
公开(公告)号：JP2011130491A
公开(公告)日：2011-06-30
申请号：JP2011028058
申请日：2011-02-14
申请人： Trueposition Inc , トゥルーポジション・インコーポレーテッド
发明人： ANDERSON ROBERT J , STILP LOUIS A , WARD MATTHEW L
IPC分类号： G01S19/03 , H04W64/00 , G01S1/02 , G01S5/02 , G01S5/06 , H04W4/22
CPC分类号： H04W64/00 , G01S1/026 , G01S5/02 , G01S5/021 , G01S5/06 , H04W4/22 , H04W76/007
摘要： PROBLEM TO BE SOLVED: To provide a multiple pass location processing method for use in a wireless location system (WLS). SOLUTION: This method comprises specifying a received transmission as requiring multiple pass location processing, whereby the WLS determines a first, lower quality location estimate and then subsequently determines a second, higher quality location estimate. The WLS then determines the first location estimate, provides it to a first location application, and then determines the second location estimate. The second location estimate may be a more accurate estimate than the first location estimate and/or of a higher confidence than the first location estimate. This method is suitable, but not limited, for use in connection with locating a wireless transmitter involved in an emergency services call and routing the call to a call center. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于无线定位系统（WLS）的多通道位置处理方法。解决方案：该方法包括将接收到的传输指定为需要多遍位置处理，由此WLS确定第一较低质量位置估计，然后确定第二较高质量的位置估计。然后，WLS确定第一位置估计，将其提供给第一位置应用，然后确定第二位置估计。第二位置估计可以是比第一位置估计更准确的估计和/或比第一位置估计高的置信度。该方法适用于但不限于用于定位涉及紧急服务呼叫的无线发射机并将呼叫路由到呼叫中心。版权所有（C）2011，JPO＆INPIT

5. 发明申请

WO0041403A3 CALIBRATION FOR WIRELESS LOCATION SYSTEM 审中-公开
标题翻译：无线定位系统的校准
公开(公告)号：WO0041403A3
公开(公告)日：2000-09-21
申请号：PCT/US9929505
申请日：1999-12-13
申请人： TRUEPOSITION INC
发明人： STILP LOUIS A
IPC分类号： G01S19/25 , G01S1/02 , G01S1/24 , G01S3/02 , G01S5/02 , G01S5/06 , G01S19/03 , G01S19/09 , G01S19/11 , G01S19/46 , G01S19/48 , H04W4/22 , H04W64/00
CPC分类号： H04W64/00 , G01S1/026 , G01S5/02 , G01S5/021 , G01S5/0215 , G01S5/0221 , G01S5/0252 , G01S5/0268 , G01S5/0284 , G01S5/06 , G01S2205/006 , G01S2205/008 , H04W4/22 , H04W76/007 , Y02D70/00 , Y02D70/1222 , Y02D70/1224 , Y02D70/1242 , Y02D70/144 , Y02D70/164
摘要： An external calibration method comprises the steps of transmitting a first reference signal from a reference transmitter; receiving the first reference signal at first and second receiver systems; (10-2A-10-2C); determining a first error value by comparing a measured TDOA value with a theoretical TDOA value associated with the known locations of the receiver systems and the known location of the reference transmitter; and utilizing the first error value to correct subsequent TDOA measurements associated with a mobile transmitter to be located. An internal calibration method comprises the steps of injecting a comb signal into the first receiver system; utilizing the comb signal to obtain an estimate of the manner in which the transfer function varies across the bandwidth of the first receiver system; and utilizing the estimate to mitigate the effects of the variation of the first transfer function on the time measurement made by the first receiver system.
摘要翻译：外部校准方法包括以下步骤：从参考发射机发射第一参考信号; 在第一和第二接收机系统处接收第一参考信号; （10-2A-10-2C）; 通过将测量的TDOA值与与接收机系统的已知位置和参考发射机的已知位置相关联的理论TDOA值进行比较来确定第一误差值; 并且利用第一误差值来校正与要定位的移动发射机相关联的后续TDOA测量。内部校准方法包括以下步骤：将梳状信号注入第一接收机系统; 利用所述梳状信号来获得所述传递函数在所述第一接收机系统的带宽上变化的方式的估计; 以及利用该估计来减轻第一传递函数的变化对由第一接收机系统进行的时间测量的影响。

6. 发明申请

WO0230089A8 MOBILE-ASSISTED NETWORK BASED TECHNIQUES FOR IMPROVING ACCURACY OF WIRELESS LOCATION SYSTEM 审中-公开
标题翻译：基于移动辅助网络的提高无线定位系统精度的技术
公开(公告)号：WO0230089A8
公开(公告)日：2012-02-23
申请号：PCT/US0120626
申请日：2001-06-27
申请人： TRUEPOSITION INC , MASSACHUSETTS INST TECHNOLOGY , STILP LOUIS A , SHEEHAN JOSEPH W , ROGERS ALAN E E , ANDERSON ROBERT J , SACHDEV VINEET
发明人： STILP LOUIS A , SHEEHAN JOSEPH W , ROGERS ALAN E E , ANDERSON ROBERT J , SACHDEV VINEET
IPC分类号： G01S1/02 , G01S5/02 , G01S5/06 , G01S19/09 , G01S19/46 , H04W4/22 , H04W64/00
CPC分类号： H04W64/00 , G01S1/026 , G01S5/02 , G01S5/021 , G01S5/0273 , G01S5/06 , G01S2205/006 , G01S2205/008 , H04W4/22 , H04W76/007
摘要： A wireless location system for providing an accurate location for a mobile unit comprises a signal collection system (10), a TOAD location processor (12), an application processor (14) and a network operation console (16). The location determination process uses a modified transmission parameters in order to minimize interference in the wireless location system.
摘要翻译：用于为移动单元提供准确位置的无线定位系统包括信号收集系统（10），TOAD位置处理器（12），应用处理器（14）和网络操作控制台（16）。位置确定过程使用修改的传输参数，以便最小化无线定位系统中的干扰。

7. 发明申请

WO0041403B1 CALIBRATION FOR WIRELESS LOCATION SYSTEM 审中-公开
标题翻译：无线定位系统校准
公开(公告)号：WO0041403B1
公开(公告)日：2000-11-09
申请号：PCT/US9929505
申请日：1999-12-13
申请人： TRUEPOSITION INC
发明人： STILP LOUIS A
IPC分类号： G01S19/25 , G01S1/02 , G01S1/24 , G01S3/02 , G01S5/02 , G01S5/06 , G01S19/03 , G01S19/09 , G01S19/11 , G01S19/46 , G01S19/48 , H04W4/22 , H04W64/00
CPC分类号： H04W64/00 , G01S1/026 , G01S5/02 , G01S5/021 , G01S5/0215 , G01S5/0221 , G01S5/0252 , G01S5/0268 , G01S5/0284 , G01S5/06 , G01S2205/006 , G01S2205/008 , H04W4/22 , H04W76/007 , Y02D70/00 , Y02D70/1222 , Y02D70/1224 , Y02D70/1242 , Y02D70/144 , Y02D70/164
摘要： An external calibration method comprises the steps of transmitting a first reference signal from a reference transmitter; receiving the first reference signal at first and second receiver systems; (10-2A-10-2C); determining a first error value by comparing a measured TDOA value with a theoretical TDOA value associated with the known locations of the receiver systems and the known location of the reference transmitter; and utilizing the first error value to correct subsequent TDOA measurements associated with a mobile transmitter to be located. An internal calibration method comprises the steps of injecting a comb signal into the first receiver system; utilizing the comb signal to obtain an estimate of the manner in which the transfer function varies across the bandwidth of the first receiver system; and utilizing the estimate to mitigate the effects of the variation of the first transfer function on the time measurement made by the first receiver system.
摘要翻译：外部校准方法包括以下步骤：从参考发射机发送第一参考信号; 在第一和第二接收机系统处接收第一参考信号; （10-2A-10-2C）; 通过将测量的TDOA值与与接收机系统的已知位置和参考发射机的已知位置相关联的理论TDOA值进行比较来确定第一误差值; 以及利用第一误差值来校正与要定位的移动发射机相关联的后续TDOA测量。内部校准方法包括将梳状信号注入到第一接收器系统中的步骤; 利用梳状信号获得传递函数在第一接收机系统的带宽上变化的方式的估计; 以及利用估计来减轻第一传递函数的变化对由第一接收机系统进行的时间测量的影响。

8. 发明申请

WO0041404A3 EFFICIENT DEMODULATION TECHNIQUES FOR A WIRELESS LOCATION SYSTEM 审中-公开
标题翻译：无线定位系统的有效解调技术
公开(公告)号：WO0041404A3
公开(公告)日：2000-09-21
申请号：PCT/US9929506
申请日：1999-12-13
申请人： TRUEPOSITION INC
发明人： STILP LOUIS A , HAVERTY JAMES D , SHEENAN JOSEPH W
IPC分类号： G01S1/02 , G01S5/02 , G01S5/06 , H04W4/22 , H04W64/00 , H04M3/22 , H04B1/16 , H04M1/11 , H04Q7/20
CPC分类号： H04W64/00 , G01S1/026 , G01S5/02 , G01S5/021 , G01S5/06 , H04W4/22 , H04W76/007
摘要： An inventive method is used in controlling the manner in which signals are demodulated in a Wireless Location System having a plurality of receiver systems (10-2A, 2B, 2C) distributed throughout a coverage area. Each of the receiver systems (10-2A, 2B, 2C) demodulates received signals carried on one of a prescribed set of reverse channels. The method comprises providing a master receiver system for each of the reverse channels, wherein the recorder receiver system(s) for any channelreceives but does not demodulate signals received on that channel. In addition, the method includes providing a slave receiver system for any channel demodulate signals received on that channel. The slave receiver system provides redundancy and thus improves the reliability of the location system.
摘要翻译：在具有分布在整个覆盖区域中的多个接收机系统（10-2A，2B，2C）的无线定位系统中，使用本发明的方法来控制信号被解调的方式。接收机系统（10-2A，2B，2C）中的每一个解调在规定的一组反向信道中携带的接收信号。该方法包括为每个反向信道提供主接收机系统，其中用于任何信道的记录器接收机系统接收但不解调在该信道上接收的信号。此外，该方法包括提供用于在该信道上接收的任何信道解调信号的从接收机系统。从接收机系统提供冗余，从而提高定位系统的可靠性。

9. 发明申请

WO0041319A3 MULTIPLE DEMODULATION PROTOCOLS FOR A WIRELESS LOCATION SYSTEM 审中-公开
标题翻译：用于无线位置系统的多个解调协议
公开(公告)号：WO0041319A3
公开(公告)日：2000-09-21
申请号：PCT/US9929581
申请日：1999-12-13
申请人： TRUEPOSITION INC
发明人： STILP LOUIS A , SHEENAN JOSEPH W , HARRIS TIM J , BULL JEFFREY F , ANDERSON ROBERT J
IPC分类号： G01S1/02 , G01S5/02 , G01S5/06 , H04W64/00 , H04B1/16 , H03D1/00 , H04B1/10
CPC分类号： G01S5/06 , G01S1/026 , G01S5/02 , G01S5/021 , H04B2201/7071 , H04W64/00
摘要： A demodulator for use in a signal collection system (10) of a Wireless Location System comprises a digital signal processor (DSP), a memory (14) containing coded instructions for use by the DSP in demodulating signals that are modulated in accordance with any one of a plurality of modulation schemes and drop and insert (D/I) units (11A, 11B) are used to interface fractional T1/E1 lines to full T1/E1 lines, which in turn are coupled to a digital access and control system (DACS) 13A. The plurality of modulation schemes may include AMPS, TDMA, CDMA, and/or GSM modulation protocols.
摘要翻译：一种用于无线定位系统的信号收集系统（10）的解调器包括数字信号处理器（DSP），存储器（14），存储器（14）包含编码指令，供DSP使用，以解调根据任意一个使用多个调制方案和丢弃和插入（D / I）单元（11A，11B）来将分数T1 / E1线路连接到完整的T1 / E1线路，该线路又连接到数字接入和控制系统 DACS）13A。多个调制方案可以包括AMPS，TDMA，CDMA和/或GSM调制协议。

10. 发明申请

WO0230089A3 MOBILE-ASSISTED NETWORK BASED TECHNIQUES FOR IMPROVING ACCURACY OF WIRELESS LOCATION SYSTEM 审中-公开
标题翻译：基于移动辅助网络的提高无线定位系统精度的技术
公开(公告)号：WO0230089A3
公开(公告)日：2002-08-29
申请号：PCT/US0120626
申请日：2001-06-27
申请人： TRUEPOSITION INC , STILP LOUIS A , SHEEHAN JOSEPH W , ROGERS ALAN E E , ANDERSON ROBERT J , SACHDEV VINEET
发明人： STILP LOUIS A , SHEEHAN JOSEPH W , ROGERS ALAN E E , ANDERSON ROBERT J , SACHDEV VINEET
IPC分类号： G01S1/02 , G01S5/02 , G01S5/06 , G01S19/09 , G01S19/46 , H04W4/22 , H04W64/00 , H04B7/00
CPC分类号： H04W64/00 , G01S1/026 , G01S5/02 , G01S5/021 , G01S5/0273 , G01S5/06 , G01S2205/006 , G01S2205/008 , H04W4/22 , H04W76/007
摘要： A wireless location system for providing an accurate location for a mobile unit comprises a signal collection system (10), a TOAD location processor (12), an application processor (14) and a network operation console (16). The location determination process uses a modified transmission parameters in order to minimize interference in the wireless location system.
摘要翻译：用于为移动单元提供精确位置的无线定位系统包括信号收集系统（10），TOAD位置处理器（12），应用处理器（14）和网络操作控制台（16）。位置确定过程使用修改的传输参数，以便最小化无线定位系统中的干扰。

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