发明名称 Collision recovery in a wireless location system
摘要 A collision recovery method for use in a Wireless Location System includes receiving a transmission from a wireless transmitter at multiple signal collection systems and multiple antenna ports of each of the multiple signal collection systems. At each of the multiple signal collection systems, the transmission received at each antenna port is converted into a digital format, and digital data representative of the received transmission is stored. The transmission is then demodulated, and TDOA analysis is performed on the digital data from pairs of signal collection systems. The location of the wireless transmitter is determined using the TDOA data. The method further involves verifying that the RF data from each antenna port is from the wireless transmitter to be located, e.g., by demodulating a segment of the transmission received at each antenna port and verifying that at least a combination of the following fields is correct: MIN, MSID, TMSI, IMSI, and ESN.
申请公布号 US6563460(B2) 申请公布日期 2003.05.13
申请号 US20010005068 申请日期 2001.12.05
申请人 TRUEPOSITION, INC.;MASSACHUSETTS INSTITUTE OF TECHNOLOGY 发明人 STILP LOUIS A.;SHEEHAN JOSEPH W.;ROGERS ALAN E. E.;ANDERSON ROBERT J.
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;(IPC1-7):G01S3/02 主分类号 G01S19/25
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