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公开(公告)号：US20120013508A1
公开(公告)日：2012-01-19
申请号：US13132340
申请日：2009-11-16
申请人： Xingkai Bao , Sushanta Das , Monisha Ghosh
发明人： Xingkai Bao , Sushanta Das , Monisha Ghosh
IPC分类号： G01S5/02
CPC分类号： G01S5/0263 , H05B37/0272
摘要： The invention relates to a system and method for localization positioning in lighting systems. At least two of a Time Difference of Arrival (TDOA), Angle of Arrival (AOA), Received Signal Strength Index (RSSI) and a Position Estimation Algorithm with unified TDOA and RSSI are used to obtain localization positioning. The schemes introduce a maximum-likelihood estimation strategy incorporating a partial derivative matrix for each lighting unit using at least two reference nodes in order to achieve higher accuracy.
摘要翻译： 本发明涉及一种用于照明系统中定位定位的系统和方法。 使用统一TDOA和RSSI的到达时差（TDOA），到达角（AOA），接收信号强度指数（RSSI）和位置估计算法中至少有两个获得定位。 这些方案引入了使用至少两个参考节点并入每个照明单元的偏导数矩阵的最大似然估计策略，以便实现更高的精度。
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公开(公告)号：US08570221B2
公开(公告)日：2013-10-29
申请号：US13132340
申请日：2009-11-16
申请人： Xingkai Bao , Sushanta Das , Monisha Ghosh
发明人： Xingkai Bao , Sushanta Das , Monisha Ghosh
IPC分类号： G01S3/02
CPC分类号： G01S5/0263 , H05B37/0272
摘要： The invention relates to a system and method for localization positioning in lighting systems. At least two of a Time Difference of Arrival (TDOA), Angle of Arrival (AOA), Received Signal Strength Index (RSSI) and a Position Estimation Algorithm with unified TDOA and RSSI are used to obtain localization positioning. The schemes introduce a maximum-likelihood estimation strategy incorporating a partial derivative matrix for each lighting unit using at least two reference nodes in order to achieve higher accuracy.
摘要翻译： 本发明涉及一种用于照明系统中定位定位的系统和方法。 使用统一TDOA和RSSI的到达时差（TDOA），到达角（AOA），接收信号强度指数（RSSI）和位置估计算法中至少有两个获得定位。 这些方案引入了使用至少两个参考节点并入每个照明单元的偏导数矩阵的最大似然估计策略，以便实现更高的精度。
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公开(公告)号：US09173157B2
公开(公告)日：2015-10-27
申请号：US12517820
申请日：2007-12-19
申请人： Sushanta Das
发明人： Sushanta Das
IPC分类号： H04W4/00 , H04W40/32 , H04L12/715 , H04W40/24
CPC分类号： H04W40/32 , H04L1/0625 , H04L5/0007 , H04L45/46 , H04L2001/0092 , H04W40/22 , H04W40/24
摘要： A method and a wireless system. The system including a cluster of wireless stations (STAs), an access point (AP), and at least one cluster lead configured to send and receive data from the STAs and the AP and to retransmit the received data to other cluster leads, or to the AP, or both. The at least one cluster lead includes an STA designated by the AP from the cluster of STAs based at least partially on channel coherence time.
摘要翻译： 一种方法和无线系统。 该系统包括一组无线站（STA），接入点（AP）以及至少一个群集线路，其被配置为从STA和AP发送和接收数据，并将接收到的数据重发到其他群集引线，或者 AP或两者。 所述至少一个群集线索至少部分地基于信道相干时间，包括由所述AP从所述STA群集指定的STA。
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公开(公告)号：US20130297195A1
公开(公告)日：2013-11-07
申请号：US13526760
申请日：2012-06-19
申请人： Sushanta Das , Mounita Saha
发明人： Sushanta Das , Mounita Saha
IPC分类号： G06F19/00
CPC分类号： G08G1/163 , G01C21/3697
摘要： An autonomous vehicle positioning system for determining a position of a remote vehicle relative to a mobile host vehicle based on safety alert messages broadcast from the remote vehicle relating to an event in a road of travel. A host vehicle communication unit communicates with the remote vehicle for receiving the broadcast messages from the remote vehicle. A host vehicle control unit identifies reference points along the road of travel. Each reference point identifies a position of the host vehicle and associated signal reception properties, for example time-of-arrival, angle-of-arrival and received signal strength when the host vehicle receives the broadcast message. The control unit of the host vehicle selects a set of the reference points having identified positions and associated times, angles and signal strength. The control unit determines a position of the remote vehicle as a function of the time difference-of-arrival, angle-of-arrival or received signal strength between each selected reference point in the set.
摘要翻译： 一种用于基于与所述远程车辆广播的关于旅行道路中的事件的安全警报消息来确定远程车辆相对于移动主机车辆的位置的自主车辆定位系统。 主机通信单元与远程车辆通信，用于从远程车辆接收广播消息。 主机控制单元识别沿行驶道路的参考点。 每个参考点识别主车辆的位置和相关联的信号接收属性，例如当主车辆接收广播消息时，例如到达时间，到达角度和接收信号强度。 主车辆的控制单元选择具有识别位置和相关时间，角度和信号强度的一组参考点。 所述控制单元根据所述组中每个所选参考点之间的到达时间差，到达角度或接收信号强度来确定所述远程车辆的位置。
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公开(公告)号：US20100309842A1
公开(公告)日：2010-12-09
申请号：US12517820
申请日：2007-12-19
申请人： Sushanta Das
发明人： Sushanta Das
IPC分类号： H04W40/00
CPC分类号： H04W40/32 , H04L1/0625 , H04L5/0007 , H04L45/46 , H04L2001/0092 , H04W40/22 , H04W40/24
摘要： A wireless system includes a cluster (100) of wireless stations (STAs) (102, 103) with one or more STA functioning as a cluster lead (103). Methods of wireless communication are also described.
摘要翻译： 无线系统包括具有作为簇引导（103）的一个或多个STA的无线站（STA）（102,103）的群集（100）。 还描述了无线通信的方法。
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公开(公告)号：US08954261B2
公开(公告)日：2015-02-10
申请号：US13526760
申请日：2012-06-19
申请人： Sushanta Das , Mounita Saha
发明人： Sushanta Das , Mounita Saha
CPC分类号： G08G1/163 , G01C21/3697
摘要： An autonomous vehicle positioning system for determining a position of a remote vehicle relative to a mobile host vehicle based on safety alert messages broadcast from the remote vehicle relating to an event in a road of travel. A host vehicle communication unit communicates with the remote vehicle for receiving the broadcast messages from the remote vehicle. A host vehicle control unit identifies reference points along the road of travel. Each reference point identifies a position of the host vehicle and associated signal reception properties, for example time-of-arrival, angle-of-arrival and received signal strength when the host vehicle receives the broadcast message. The control unit of the host vehicle selects a set of the reference points having identified positions and associated times, angles and signal strength. The control unit determines a position of the remote vehicle as a function of the time difference-of-arrival, angle-of-arrival or received signal strength between each selected reference point in the set.
摘要翻译： 一种用于基于与所述远程车辆广播的关于旅行道路中的事件的安全警报消息来确定远程车辆相对于移动主机车辆的位置的自主车辆定位系统。 主机通信单元与远程车辆通信，用于从远程车辆接收广播消息。 主机控制单元识别沿行驶道路的参考点。 每个参考点识别主车辆的位置和相关联的信号接收属性，例如当主车辆接收广播消息时，例如到达时间，到达角度和接收信号强度。 主车辆的控制单元选择具有识别位置和相关时间，角度和信号强度的一组参考点。 所述控制单元根据所述组中每个所选参考点之间的到达时间差，到达角度或接收信号强度来确定所述远程车辆的位置。
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