The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 2012
Filed:
Jan. 14, 2009
G. Dickey Arndt, Friendswood, TX (US);
Phong H. Ngo, Friendswood, TX (US);
Chau T. Phan, Sugar Land, TX (US);
Julia A. Gross, Houston, TX (US);
Jianjun NI, Pearland, TX (US);
John Dusl, Houston, TX (US);
G. Dickey Arndt, Friendswood, TX (US);
Phong H. Ngo, Friendswood, TX (US);
Chau T. Phan, Sugar Land, TX (US);
Julia A. Gross, Houston, TX (US);
Jianjun Ni, Pearland, TX (US);
John Dusl, Houston, TX (US);
Abstract
A passive tracking system is provided with a plurality of ultrawideband (UWB) receivers that is asynchronous with respect to a UWB transmitter. A geometry of the tracking system may utilize a plurality of clusters with each cluster comprising a plurality of antennas. Time Difference of Arrival (TDOA) may be determined for the antennas in each cluster and utilized to determine Angle of Arrival (AOA) based on a far field assumption regarding the geometry. Parallel software communication sockets may be established with each of the plurality of UWB receivers. Transfer of waveform data may be processed by alternately receiving packets of waveform data from each UWB receiver. Cross Correlation Peak Detection (CCPD) is utilized to estimate TDOA information to reduce errors in a noisy, multipath environment.