u-blox ANTARIS 4 - Time Mode

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your position is our focus
4.7.2 Time Mode
This section only applies to LEA-4T modules.
LEA-4TmodulessupportaspecialTime Modeforincreasedtimeaccuracy.TheAN
®
TARIS
4isdesignedonlyfor
stationaryantennasetup.
 isdisabled, thereceiver works like a
standardPVT receiver. Ifhigh timingaccuracyis required andthe fixedantennaposition isnotknown, setthe
Time Modeto‘survey-in’.InthismodetheANTARIS
®
4GPSreceiversaveragesthepositionmeasurementsover
a long period of time until a predefined standard deviation is achieved. Afterwards the receiver will be
automaticallysettofixedModeandtheTimingfeatureswillbeactivated.
WhenthepositionofthefixedGPSAntennaiswellknown(i.e.surveyedposition),
settheTime Modeto‘fixed
Mode’andfilloutX-,Y-,Z-PositionparameterinECEFincludingthestandarddeviationoftheposition.
TheTime Mode features three differentsettings. When the Time Mode
Parameter Description
‘disabled’
Time Mode disabled(standardGPSpositioningsetting)
‘survey-in’
Time Modeactivated,butthetimingfeaturesarestillinactiveasthe
currentpositionisnotyetdefined/known.Whenit’smeasured
positionisaccurateenough,thereceiverwillbeautomaticallysetto
fixedModeandtheTimingfeatureswillbeactivated.
Time Mode
‘fixedMode’
Time Modeactivatedandcurrentpositionisdefined
Survey-In
MinimumobservationTime MinimumobservationTimeforactivatingtimingfeatures.
Requiredpositionstandarddeviation RequiredStandarddeviationforactivatingtimingfeatures.
Fixed Time Mode True Position
X,Y,Z X-,Y-,Z-PositionparameterinECEF
Standarddeviation Standarddeviationofthefixedantennaposition
Table 44: Time Mode Parameter description
-In’canbefoundinUBX-.TIM(Timing)–SVIN(Survey-In).
 Note Timing receiver also supports timing with only one SV. To allow it, change MinSV in UBX – CFG
Thestatusinformationabout‘Survey
(Config)-NAV2(Navigation2)to1.
GPSModules-SystemIntegrationManual(SIM)(incl.ReferenceDesign) ReceiverDescription
GPS.G4-MS4-05007-A1
  Page 113