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1. 发明申请

WO2004070413A3 REDUCING MEMORY USAGE IN NONCOHERENT SIGNAL PROCESSING 审中-公开
标题翻译：减少非相关信号处理中的存储器使用
公开(公告)号：WO2004070413A3
公开(公告)日：2004-11-11
申请号：PCT/US2004002094
申请日：2004-01-26
申请人： SIRF TECH INC , BASCH JULIEN , CHOU ANDREW , LORENZ ROBERT , STONE JESSE
发明人： BASCH JULIEN , CHOU ANDREW , LORENZ ROBERT , STONE JESSE
IPC分类号： G01S1/00 , H04B1/707
CPC分类号： G01S19/30 , G01S19/37 , H04B2201/70715
摘要： A method for detecting a positioning signal includes (a) correlating a segment of a received positioning signal with a reference signal of a selected code phase and frequency to obtain a correlation value, (b) if the correlation value is less than a predetermined minimum, assigning the correlation value to the predetermined minimum, and (c) accumulating the correlation value in a sum of correlation values obtained using other segments of the received positioning signal. In addition, the correlation value may be reduced by a predetermined value, which is preferably an expected mean value for a noise component in the segment of the received positioning signal.
摘要翻译：一种用于检测定位信号的方法包括：（a）将接收到的定位信号的片段与所选码相位和频率的参考信号相关以获得相关值，（b）如果相关值小于预定最小值，将相关值分配给预定最小值，以及（c）将相关值累加在使用接收到的定位信号的其它段获得的相关值之和中。另外，相关值可以减小预定值，该预定值优选地是接收的定位信号的分段中的噪声分量的预期平均值。

2. 发明申请

WO2004065980B1 USING MULTIPLE DETECTION ALGORITHMS IN POSITIONING SIGNAL PROCESSING 审中-公开
标题翻译：在定位信号处理中使用多个检测算法
公开(公告)号：WO2004065980B1
公开(公告)日：2004-10-28
申请号：PCT/US2004001210
申请日：2004-01-16
申请人： SIRF TECH INC , BASCH JULIEN , CHOU ANDREW , LORENZ ROBERT , STONE JESSE
发明人： BASCH JULIEN , CHOU ANDREW , LORENZ ROBERT , STONE JESSE
IPC分类号： G01S1/00
CPC分类号： G01S19/28 , G01S19/235
摘要： A systematic method for acquiring positioning signals, such as global positioning system (GPS) signals, uses different signal detection algorithms at different stages of signal detection. For example, a method for detecting multiple positioning signals may include first detecting a first positioning signal using a robust but less sensitive signal detection method, such as non-coherent integration. Based on the signal parameter values that allow detection of the first positional signal, detecting a second positioning signal using a more sensitive method, such as coherent integration. In this manner, by capturing the strongest signal first using a robust method, signal detection parameter values common to positioning signals can be narrowed to allow subsequent signal acquisitions using a more sensitive -- but computationally more intensive -- method.
摘要翻译：用于获取定位信号的系统方法，如全球定位系统（GPS）信号，在信号检测的不同阶段使用不同的信号检测算法。例如，用于检测多个定位信号的方法可以包括首先使用鲁棒但不太灵敏的信号检测方法来检测第一定位信号，例如非相干积分。基于允许检测第一位置信号的信号参数值，使用诸如相干积分的更敏感的方法来检测第二定位信号。以这种方式，通过使用鲁棒的方法首先捕获最强的信号，可以缩小定位信号共同的信号检测参数值，以便使用更敏感但是计算上更密集的方法来进行随后的信号采集。

3. 发明申请

WO2004070413A2 REDUCING MEMORY USAGE IN NONCOHERENT SIGNAL PROCESSING 审中-公开
标题翻译：减少非易失性信号处理中的存储器使用
公开(公告)号：WO2004070413A2
公开(公告)日：2004-08-19
申请号：PCT/US2004/002094
申请日：2004-01-26
申请人： SIRF TECHNOLOGY INC. , BASCH, Julien , CHOU, Andrew , LORENZ, Robert , STONE, Jesse
发明人： BASCH, Julien , CHOU, Andrew , LORENZ, Robert , STONE, Jesse
IPC分类号： G01S
CPC分类号： G01S19/30 , G01S19/37 , H04B2201/70715
摘要： A method for detecting a positioning signal includes (a) correlating a segment of a received positioning signal with a reference signal of a selected code phase and frequency to obtain a correlation value, (b) if the correlation value is less than a predetermined minimum, assigning the correlation value to the predetermined minimum, and (c) accumulating the correlation value in a sum of correlation values obtained using other segments of the received positioning signal. In addition, the correlation value may be reduced by a predetermined value, which is preferably an expected mean value for a noise component in the segment of the received positioning signal.
摘要翻译：一种检测定位信号的方法包括：（a）将接收到的定位信号的一段与所选码相位和频率的参考信号相关以获得相关值，（b）如果相关值小于预定最小值，将所述相关值分配给所述预定的最小值，以及（c）将所述相关值累加在使用所接收的定位信号的其他部分获得的相关值之和中。此外，可以将相关值减小预定值，该预定值优选地是接收到的定位信号的段中的噪声分量的预期平均值。

4. 发明申请

WO2004065980A1 USING MULTIPLE DETECTION ALGORITHMS IN POSITIONING SIGNAL PROCESSING 审中-公开
标题翻译：多信号检测算法在定位信号处理中的应用
公开(公告)号：WO2004065980A1
公开(公告)日：2004-08-05
申请号：PCT/US2004/001210
申请日：2004-01-16
申请人： SIRF TECHNOLOGY, INC. , BASCH, Julien , CHOU, Andrew , LORENZ, Robert , STONE, Jesse
发明人： BASCH, Julien , CHOU, Andrew , LORENZ, Robert , STONE, Jesse
IPC分类号： G01S1/00
CPC分类号： G01S19/28 , G01S19/235
摘要： A systematic method for acquiring positioning signals, such as global positioning system (GPS) signals, uses different signal detection algorithms at different stages of signal detection. For example, a method for detecting multiple positioning signals may include first detecting a first positioning signal using a robust but less sensitive signal detection method, such as non-coherent integration. Based on the signal parameter values that allow detection of the first positional signal, detecting a second positioning signal using a more sensitive method, such as coherent integration. In this manner, by capturing the strongest signal first using a robust method, signal detection parameter values common to positioning signals can be narrowed to allow subsequent signal acquisitions using a more sensitive -- but computationally more intensive -- method.
摘要翻译：用于获取定位信号（例如全球定位系统（GPS）信号）的系统方法在信号检测的不同阶段使用不同的信号检测算法。例如，用于检测多个定位信号的方法可以包括使用稳健但较不敏感的信号检测方法（例如非相干积分）来首先检测第一定位信号。基于允许检测第一位置信号的信号参数值，使用诸如相干积分的更灵敏的方法来检测第二定位信号。以这种方式，通过使用鲁棒方法首先捕获最强信号，可以缩小定位信号共有的信号检测参数值，以允许使用更灵敏但计算更密集的方法进行后续信号采集。

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