| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To recognize the position of a target object by reducing the errors resulting due to multiple paths, prospect, as well as, propagation and the like. <P>SOLUTION: During correlation intervals, while a window function is time shifted, the window function is applied to a first signal and a second signal of a pair of radio signals, received at a pair of passive sensors from a target object, to produce a first windowed signals and a second windowed signals for each application. The first windowed function is cross-correlated to the second windowed signals to determine a peak for each cross-correlation. The peaks are compared, in time-series with a predetermined threshold to detect a first pulse in the first signal and a first pulse in the second signal and a delay is determined between the first pulses indicative of position of the target object. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
