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Definition of "multiple dwell detector" |
a detector typically used in spread spectrum PN sequence acquisition (i.e., PN sequence synchronization) where the detection process is carried out in stages. In the PN code acquisition process, in a spread spectrum receiver, the receiver makes a hypothesis about the correct PN code phase and then tests the hypothesis by correlating the received signal with a locally generated version with a phase equal to the hypothesized phase. If the value of the resulting correlation is less than a given threshold value, then the receiver examines a new phase. If the correlation is greater than the threshold value, then the receiver continues the examination of the same PN code phase by performing a further correlation with the same phase in a detection stage commonly referred to as the confirmation stage. |
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