This section contains some timing parameters relevant for both FFT based acquisition modules.
| Parameter | Description | Unit | Default / Related Values | Notes | |
|---|---|---|---|---|---|
| MaxNavProcAcqBeforeFft | Maximum number of acquisitions via navigation processing which are to be done before an acquisition via signal processing defined in the "FFTAcquisitionLevel*"-units is started. Before doing an FFT acquisition, the receiver tries 'MaxNavProcAcqBeforeFft' times to acquire the signals by computing the signal's code phase and Doppler from the last position fix (so-called vector acquisition). | - | - | To deactivate acquisitions via navigation processing, set this parameter to 0. | |
| NoLevel1TotalFailuresBeforFullOpenSkyLevel2 | Number of unsuccessful level 1 acquisition runs before a full open sky (full Doppler range) level 2 acquisition is initiated. Used when cold starting in an indoor environment. | - | - | Use with care, as a level 2 acquisition with the full Doppler range can be computationally demanding. | |
| RangeRateDifferenceThreshold | Acquisition for objects within expected range rates beeing closer then this treshold + 3 x standard deviation will be removed in that acquisition step. | m/s | 0 | If 0 or not set, it will be deactivated | |
| ServicesWithDopplerAmbiguitySolution | List of services for which RangeRateDifferenceThreshold will be applied. Each signal is just tested against signals of the same service. | - | Necessary only when RangeRateDifferenceThreshold is set to value other than 0 | ||