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1.发明授权Determining transmit location of an emitter using a single geostationary satellite 有权使用单个对地静止卫星确定发射器的发射位置公开(公告)号：US08462044B1
公开(公告)日：2013-06-11
申请号：US13014660
申请日：2011-01-26
摘要： The present invention provides a method and apparatus for determining the transmit location of an emitter using a single geostationary satellite. In an embodiment, a signal is received at a ground station from the emitter and relayed by the geostationary satellite. The signal is received at the ground station at a plurality of time instances and has a plurality of observed frequencies, one for each time instance. A plurality of lines of position are determining based on the plurality of observed frequencies. The transmit location of the emitter is determined based on at least one intersection among the plurality of lines of position.
摘要翻译： 本发明提供一种用于使用单个对地静止卫星确定发射器的发射位置的方法和装置。 在一个实施例中，在地面站处从发射器接收信号并由对地静止卫星中继。 该信号在多个时间点在地面站处被接收，并且具有多个观测频率，每个时间实例一个。 基于多个观察到的频率来确定多个位置行。 发射器的发射位置基于多个位置线之间的至少一个交叉点来确定。
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2.发明授权Determining a geolocation solution of an emitter on earth using satellite signals 有权使用卫星信号确定地球上发射器的地理位置解公开(公告)号：US08004459B2
公开(公告)日：2011-08-23
申请号：US12618684
申请日：2009-11-13
CPC分类号： G01S5/12 , G01S5/0273 , H04B7/18545
摘要： Embodiments provide systems and methods for determining the geolocation of an emitter on earth. A solution is obtained from two TDOA measurements that need not be acquired at the same time. A solution is obtained from a TDOA measurement and an FDOA measurement that need not be acquired at the same time and need not be coming from the same satellite pair. A location of an emitter can be determined from minimizing a cost function of the weighted combination of the six solutions derived from the two TDOA measurements and the two FDOA measurements, where the weight of each solution in the combination is determined based on the intersection angle of the two curves that define the possible locations of the emitter based on the TDOA and/or FDOA measurements.
摘要翻译： 实施例提供用于确定地球上发射器的地理位置的系统和方法。 从不需要同时获取的两个TDOA测量获得解决方案。 从TDOA测量和FDOA测量获得的解决方案不需要同时获取，并且不需要来自相同的卫星对。 发射器的位置可以从最小化从两个TDOA测量和两个FDOA测量得到的六个解的加权组合的成本函数来确定，其中组合中的每个解的权重基于 这两条曲线定义了基于TDOA和/或FDOA测量的发射器的可能位置。
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3.发明申请Determining a Geolocation Solution of an Emitter on Earth Based on Weighted Least-Squares Estimation 有权基于加权最小二乘估计确定地球上发射体的地理位置解决方案公开(公告)号：US20080252525A1
公开(公告)日：2008-10-16
申请号：US11735158
申请日：2007-04-13
IPC分类号： G01S1/24
CPC分类号： G01S5/0257 , G01S5/12
摘要： Embodiments provide systems and methods for determining the geolocation of an emitter on earth based on weighted least-squares estimation based on two TDOA and two FDOA measurements, none of which need to be acquired at the same time. The four TDOA and FDOA measurements and the errors in each of the measurements are determined. Weights for the errors in the TDOA and FDOA measurements are determined, and the weights are applied in a weighted errors function. The weights account for the errors in the measurements and the errors in the satellite positions and velocities, and are dependent on the localization geometry. The weighted errors function is minimized to determine the location estimate of the unknown emitter.
摘要翻译： 实施例提供了基于基于两个TDOA和两个FDOA测量的加权最小二乘估计来确定地球上发射器的地理位置的系统和方法，这些都不需要同时获取。 确定四个TDOA和FDOA测量以及每个测量中的误差。 确定TDOA和FDOA测量中的误差的权重，并且权重应用于加权误差函数。 重量占测量中的误差和卫星位置和速度的误差，并且取决于定位几何。 加权误差函数被最小化以确定未知发射器的位置估计。
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4.发明申请Determining a Geolocation Solution of an Emitter on Earth Using Satellite Signals 有权使用卫星信号确定地球上的发射器的地理位置解决方案公开(公告)号：US20100097267A1
公开(公告)日：2010-04-22
申请号：US12618684
申请日：2009-11-13
CPC分类号： G01S5/12 , G01S5/0273 , H04B7/18545
摘要： Embodiments provide systems and methods for determining the geolocation of an emitter on earth. A solution is obtained from two TDOA measurements that need not be acquired at the same time. A solution is obtained from a TDOA measurement and an FDOA measurement that need not be acquired at the same time and need not be coming from the same satellite pair. A location of an emitter can be determined from minimizing a cost function of the weighted combination of the six solutions derived from the two TDOA measurements and the two FDOA measurements, where the weight of each solution in the combination is determined based on the intersection angle of the two curves that define the possible locations of the emitter based on the TDOA and/or FDOA measurements.
摘要翻译： 实施例提供用于确定地球上发射器的地理位置的系统和方法。 从不需要同时获取的两个TDOA测量获得解决方案。 从TDOA测量和FDOA测量获得的解决方案不需要同时获取，并且不需要来自相同的卫星对。 发射器的位置可以从最小化从两个TDOA测量和两个FDOA测量得到的六个解的加权组合的成本函数来确定，其中组合中的每个解的权重基于 这两条曲线定义了基于TDOA和/或FDOA测量的发射器的可能位置。
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5.发明授权Determining a geolocation solution of an emitter on earth based on weighted least-squares estimation 有权基于加权最小二乘估计确定地球上发射器的地理位置解公开(公告)号：US07663547B2
公开(公告)日：2010-02-16
申请号：US11735158
申请日：2007-04-13
CPC分类号： G01S5/0257 , G01S5/12
摘要： Embodiments provide systems and methods for determining the geolocation of an emitter on earth based on weighted least-squares estimation based on two TDOA and two FDOA measurements, none of which need to be acquired at the same time. The four TDOA and FDOA measurements and the errors in each of the measurements are determined. Weights for the errors in the TDOA and FDOA measurements are determined, and the weights are applied in a weighted errors function. The weights account for the errors in the measurements and the errors in the satellite positions and velocities, and are dependent on the localization geometry. The weighted errors function is minimized to determine the location estimate of the unknown emitter.
摘要翻译： 实施例提供了基于基于两个TDOA和两个FDOA测量的加权最小二乘估计来确定地球上发射器的地理位置的系统和方法，这些都不需要同时获取。 确定四个TDOA和FDOA测量以及每个测量中的误差。 确定TDOA和FDOA测量中的误差的权重，并且权重应用于加权误差函数。 重量占测量中的误差和卫星位置和速度的误差，并且取决于定位几何。 加权误差函数被最小化以确定未知发射器的位置估计。
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6.发明授权Determining a geolocation solution of an emitter on earth using satellite signals 有权使用卫星信号确定地球上发射器的地理位置解公开(公告)号：US07667640B2
公开(公告)日：2010-02-23
申请号：US11735146
申请日：2007-04-13
IPC分类号： H04B7/185
CPC分类号： G01S5/12 , G01S5/0273 , H04B7/18545
摘要： Embodiments provide systems and methods for determining the geolocation of an emitter on earth. A solution is obtained from two TDOA measurements that need not be acquired at the same time. A solution is obtained from a TDOA measurement and an FDOA measurement that need not be acquired at the same time and need not be coming from the same satellite pair. A location of an emitter can be determined from minimizing a cost function of the weighted combination of the six solutions derived from the two TDOA measurements and the two FDOA measurements, where the weight of each solution in the combination is determined based on the intersection angle of the two curves that define the possible locations of the emitter based on the TDOA and/or FDOA measurements.
摘要翻译： 实施例提供用于确定地球上发射器的地理位置的系统和方法。 从不需要同时获取的两个TDOA测量获得解决方案。 从TDOA测量和FDOA测量获得的解决方案不需要同时获取，并且不需要来自相同的卫星对。 发射器的位置可以从最小化从两个TDOA测量和两个FDOA测量得到的六个解的加权组合的成本函数来确定，其中组合中的每个解的权重基于 这两条曲线定义了基于TDOA和/或FDOA测量的发射器的可能位置。
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7.发明申请Determining a Geolocation Solution of an Emitter on Earth Using Satellite Signals 有权使用卫星信号确定地球上的发射器的地理位置解决方案公开(公告)号：US20080252516A1
公开(公告)日：2008-10-16
申请号：US11735146
申请日：2007-04-13
IPC分类号： H04B7/185
CPC分类号： G01S5/12 , G01S5/0273 , H04B7/18545
摘要： Embodiments provide systems and methods for determining the geolocation of an emitter on earth. A solution is obtained from two TDOA measurements that need not be acquired at the same time. A solution is obtained from a TDOA measurement and an FDOA measurement that need not be acquired at the same time and need not be coming from the same satellite pair. A location of an emitter can be determined from minimizing a cost function of the weighted combination of the six solutions derived from the two TDOA measurements and the two FDOA measurements, where the weight of each solution in the combination is determined based on the intersection angle of the two curves that define the possible locations of the emitter based on the TDOA and/or FDOA measurements.
摘要翻译： 实施例提供用于确定地球上发射器的地理位置的系统和方法。 从不需要同时获取的两个TDOA测量获得解决方案。 从TDOA测量和FDOA测量获得的解决方案不需要同时获取，并且不需要来自相同的卫星对。 发射器的位置可以从最小化从两个TDOA测量和两个FDOA测量得到的六个解的加权组合的成本函数来确定，其中组合中的每个解的权重基于 这两条曲线定义了基于TDOA和/或FDOA测量的发射器的可能位置。
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