Chapter 3 OEM7 Receiver OperationOEM7 Installation and Operation User Manual v1 50To reset the PDP or GLIDE filter:pdpfilter resetTo enable the PDP filter:pdpfilter enableEnsure the PDPFILTER command is used before the PDPMODE command. Set the PDP typeand kinematic type according to the application. For most kinematic applications:pdpmode relative dynamic or pdpmode relative autoThe rest of the setup is position type and log dependent according to the application. Forexample, details of the RTKSOURCE, PSRDIFFSOURCE, INTERFACEMODE, SERIALCONFIGand other configuration commands are outlined in the OEM7 Commands and Logs ReferenceManual (OM-20000169). Also refer to the NovAtel application note APN-038 Pseudorange/Delta-Phase (PDP) and GLIDE available from our web site (additional Application Notes available atwww.novatel.com/support/.3.7 STEADYLINE®The STEADYLINE functionality helps mitigate the discontinuities that often occur when a GNSSreceiver changes positioning modes. The effect is especially evident when a receiver transitionsfrom an RTK position mode solution to a lower accuracy “fall back” solution, such as NovAtelCORRECT PPP, DGPS, WAAS+GLIDE or even autonomous GLIDE (see Figure 16: PositioningChange Without STEADYLINE below). Smooth transitions are particularly important for agri-cultural steering applications where sudden jumps are problematic.Figure 16: Positioning Change Without STEADYLINEThe STEADYLINE feature internally monitors the position offsets between all the positioningmodes present in the receiver. When the current positioning mode becomes unavailable, thereceiver transitions to the next most accurate positioning mode.The setting in the STEADYLINE command determines how the receiver transitions to the nextpositioning mode. The following sections describe the STEADYLINE modes.For more information about the STEADYLINE command, refer to the OEM7 Commandsand Logs Reference Manual (OM-20000169).3.7.1 MaintainWhen the receiver transitions to a different positioning mode, it maintains the position offset cal-culated to limit a potential real position jump. The receiver continues to apply the position offsetto all positions calculated in the new positioning mode.
