Or, netr9_rov.17oThe performance of RTK : M8P is better than M8TPlease check them by yourself after you go back to home.
If you need an information how to set the reference station,please refer to the website (GNSS TUTOR).
http://www.denshi.e.kaiyodai.ac.jp/gnss_tutor/experiment.htmlInternetu-center / RTKLIBInternetBase station(Ntrip server)Rover stationCorrection data is received via internetGNSS raw data is received via USB-SerialYou can switch Desktop to Laptop/Pad/Raspberry PibCode-phase accuracy is quiteimportant for RTK performanceFish !Q=12807 46354635 41034635 68106810 8477Previous test resultPOSLVX result(Post-processed RTK/IMU/Speed)poslvx.pos-6-7 epochs were over 20-30 cmin horizontal directionYou need to prepare the raw-data at base stationto include your period at rover.
BasetimeRoverYou recorded your raw-data for this periodtime

Magnitude of 8.6(0,0,0) are the RTK fixed solutionsbased on F3/GEONET in GSI.

First 1 hour results1 primary satellite and3 secondary satellites1 primary satellite and2 secondary satellites1 primary satellite and1 secondary satellitesIn total, 3+2+1=6 ambiguities have to be resolved.
But, we actually need 9 satellites !
It also can be applied in RTKLIBThere is a contradiction because the number of usable satellites in urban areasi4196 epochs11493 epochsSingle positioning in the center of TokyoGPS+QZS+BEIDOU in 2016What is the difference between two results ?
Same raw data (ublox M8T) is used !!!Please remember that RTKLIB is not designed for the purpose ofnavigation under dense-urban areas although it can be used evenin the raw-data obtained in urban areas.Wrong fix

ijub((iuibju) (ijubijc (dtubijub

ijI ubTubijj
bWithout reference station,))ijdTubij ) I ubTubijN ubij

ijdtubdtuijdtbij

ij0, dTub

ijBub( u ,0i0Nui ) ( b,0And satelliteGenerate new observationwhich means double difference.

ijd ubd ubij

idTubdTubji0N ubij0Nbi ) ( u ,0j0Nuj ) ( b,0j0Nbj )(short Baseline and sameij
ij
ijNubububantennatype)
ijIub

iIub

jIub

iji0, TubTubTubjSatellite iij0, dubibji
dubdubju

iu0

ijNubWhy do we say thebaseline limitation of RTK ?
(10-100 km or more)It strongly depends oneach RTK engine !

Satellite jj
bBaselineReceiver uReceiver bMemo for Misra & Enge:http://gpspp.sakura.ne.jp/diary200608.htmsv1 _ sv 2Prov_ refsv1 _ sv 2rrov_ refsv1 _ sv 2p , rov _ refsv1 _ sv 2rov _ refsv1 _ sv 2rov _ refsv1 _ sv 2rov _ refrNsv1 _ sv 2, rov_ refUnit is meter in y axisUnit is meter in y axis1. Reference satellite GPS PRN 16and target satellite is GPS PRN 82. Which is code-phase double difference ?
3. If you subtract from right to left, what happen ?
sv1_ sv 2Prov_ refsv1 _ sv 2rrov_ refsv1 _ sv 2p , rov_ refsv1_ sv 2rov_ refsv1 _ sv 2rrov_ refsv1_ sv 2N rov_ refsv1_ sv 2, rov_ refThe unit is meterDivided by wavelengthThe unit is cycleProbably, we guess the integer ambiguity betweenPRN16 and PRN8 is about - 40 ?
In fact, the average of this right results was - 41.3Satellite jSatellite ii
bsv1 _ sv 2rov _ refsv1 _ sv 2rov_ refrsv1 _ sv 2p , rov _ refsv1 _ sv 2rov_ refsv1 _ sv 2rrov_ refsv1 _ sv 2N rov_ refPi
usv1 _ sv 2, rov_ refReceiver ujuj
bReceiver bBaseline(X_user, Y_user, Z_user) (X, Y, Z)Reference sta.Std. = 2.8 mmStd. = 4.0 mmStd. = 3.4 mm(X, Y, Z)Reference sta.
Enlarged view of the very small plotshown in the bottom-right corner.
I am repeating myself, RTK tells you only dx, dy, dz.
You have to decide the precise reference positions !

(X_user, Y_user, Z_user)