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BeiDou, SurvCE
We are currently upgrading our RTK base and rover equipment to receive and use BeiDou. The receivers are Trimble DB970 and part of the upgrade involves going to SurvCE 5, which we have done, to get the BeiDou corrections through RTCM3.2. Things seem to be working, at least when autonomous on either the base or rover they receive and use BeiDou, but when switching the rover to RTK all BeiDou show as “Satellite Used: No” on SurvCE.
I have read elsewhere on this site that most systems need 5 satellites from each constellation in order to use that constellation as part of the RTK fix, but there are some systems that can “cross” between and hence don’t need this minimum.
In the attached image the rover is in RTK and it is receiving two BeiDou satellites, but is not using them for RTK fix. This was with the base and rover in the office compound so not good conditions. When in open sky we get up to 5 BeiDou, but in RTK they always are “Satellite Used: No”. We are working on resolving/understanding this (it is likely to be that the update of all the firmware etc is not complete). However, as shown on the attached image, in SurvCE when we tap on the skyplot it goes to a page that shows tabs for GPS, GLONASS, Sun, and options for selecting/using satellites. Should there also be a tab for BeiDou, like the one I have sketched in red?
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