Physics:Dwell time (GNSS)

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The dwell time in GNSS is the time required to test for the presence of a satellite signal for a certain combination of parameters.[1] A search process detects whether a GNSS satellite is present or not in an area of the sky, based on correlation of a received signal with a reference signal stored in the receiver.

The dwell times are associated with the performance of a certain detector. They can be classified into single dwell times, when the decision is taken in one step, and multiple dwell times,[2] when the decision is taken in two or more steps.


  1. GPS World 2011
  2. Lohan2004

Works cited

  • N. Couronneau, P.J. Duffett-Smith, and A. Mitelman, Calculating Time-to-First-Fix, GPS World, Nov 2011 (GPS World 2011)
  • E.S. Lohan, A. Lakhzouri, and M. Renfors, Selection of the multiple-dwell hybrid-search strategy for the acquisition of Galileo signals in fading channels, in CDROM Proc. of IEEE PIMRC, Sep 2004. (Lohan2004)