Chapter 3 SPAN OperationOEM7 SPAN Installation and Operation User Manual v1 693.9.3 ALIGN AzimuthOn SPAN systems with dual antennas, an azimuth is available from the dual antenna baseline.This is the same azimuth that is used as an update to the SPAN solution. It is noisier than theinertial azimuth and is available at a much lower rate, but will have a stable mean. This azimuthis computed from the master antenna to the rover antenna based on how the antennas are ori-ented on the vehicle.There is a specific subset of logs that output this azimuth. See Table 14: Logs with Azimuth Databelow.Log LogFormat Azimuth SourceBESTVEL NovAtelCourse Over GroundFrom the best system solution which could be eitherGNSS or INSGPHDT NMEA ALIGNGPVTG NMEACourse Over GroundFrom the best system solution which could be eitherGNSS or INSHEADING2 NovAtel ALIGNINSATT / INSATTS /INSATTX NovAtel InertialINSPVA / INSPVAS /INSPVAX NovAtel InertialINSSPD NovAtel Course Over GroundComputed using the INS solution onlyPASHR NMEA InertialTable 14: Logs with Azimuth Data3.10 Data Collection for Post ProcessingSome operations, such as aerial measurement systems, do not require real-time informationfrom SPAN. These operations are able to generate the position, velocity or attitude solutionpost-mission in order to generate a more robust and accurate solution than is possible in real-time.In order to generate a solution in post-processing, data must be simultaneously collected at abase station and each rover. The following logs must be collected in order to successfully postprocess data.From a base:l RANGECMPB ONTIME 1l RAWEPHEMB ONCHANGED
