| US 7,579,988 B2 | ||
| Method, device and system for determining direction of arrival of signal | ||
| Jin Xu, Singapore (Singapore); Yugang Ma, Singapore (Singapore); Xiaobing Sun, Singapore (Singapore); and Kanzo Okada, Singapore (Singapore) | ||
| Assigned to Sony Corporation, (Japan) | ||
| Filed on Jun. 26, 2007, as Appl. No. 11/823,478. | ||
| Claims priority of application No. 200604421-8 (SG), filed on Jun. 27, 2006. | ||
| Prior Publication US 2008/0012765 A1, Jan. 17, 2008 | ||
| Int. Cl. G01S 5/02 (2006.01); G01S 5/04 (2006.01); G01S 7/40 (2006.01) | ||
| U.S. Cl. 342—417 [342/174; 342/442] | 21 Claims |
| 1. A method for determining a DOA of a signal, comprising:
receiving first and second UWB waveforms of the signal at one or more antennas of a UWB transceiver;
defining a window in the first and second UWB waveforms, wherein the window is defined in a leading portion of the signal;
calculating first and second amplitude values of the respective first and second UWB waveforms in the window;
calculating an amplitude ratio with the first and second amplitude values; and
comparing the amplitude ratio with calibration data to determine the DOA of the signal.
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