| 摘要 |
A method ( 200 ) of enhanced peak detection in a correlation signal (g(x)) is disclosed. The method ( 200 ) comprises identifying ( 215 ) in the correlation signal (g(x)) positions where the modulus value of the correlation signal is above a first predetermined value. Each of the identified positions is then processed by forming ( 220 ) a sub-signal from the correlation signal by isolating a region of samples, the region comprising substantially equal numbers of samples on opposite sides of the identified position. The sub-signal is then up-sampled ( 221, 222, 225 ) to a higher resolution using Fourier interpolation. The up-sampled sub-signal is searched ( 230 ) for a peak value, and when the peak value is greater than a second predetermined value, parameters associated with the peak value is stored ( 236 ).
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