RTK Base

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RTK Base
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Correction age
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Output
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Connected
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Satellites

Receiver

Base position (ARP)

Outputs

Raspberry Pi

Connected rovers 0

ClientRover statusBaselineFromTimeSent

Satellites

Signal strength (C/N0, dB-Hz). Faded bars = not used in the solution.

RTCM messages

TypeMeaningEveryLastCount

Clients

Each client gets an NTRIP username and password. Disabling, expiring or deleting an account cuts its live connection within seconds.

ClientStatusExpiresConn.Last seenUsage

1 · Survey-in

The receiver averages its own position until both the minimum time and target accuracy are met, then starts sending corrections. Good for getting going fast; absolute accuracy is only as good as the averaged fix (≈0.5–2 m).

2 · Fixed position

Use a known coordinate (benchmark, or a PPP result from the raw log below). Rovers that come back to the same field every season then get the same coordinates. Height is ellipsoidal (WGS84/ITRF), not sea level.

RTCM output

1 Hz is standard for a base. Check that your rovers support every constellation you enable.

Raw logging (for PPP)

Records RAWX/SFRBX to a .ubx file. Log 4–24 h with the antenna fixed, convert to RINEX (RTKLIB convbin) and upload to a PPP service (e.g. NRCan CSRS-PPP) to get an absolute coordinate for “Fixed position”.

Receiver

Settings sent from this page are saved to the receiver's flash, so they survive power cuts.


Turns the ZED-F9P back into a rover. Corrections stop for all clients.

Events

Connection history

ClientStartDurationDataEnd

GNSS receiver connection

USB cable → usually /dev/ttyACM0 and port “USB”. Wired to the Pi GPIO pins → /dev/serial0 and “UART1”. Baud is ignored over USB.

NTRIP caster


XBee / radio output


XBee must be in transparent (AT) mode with the same baud rate on both ends. If link usage goes above ~70 %, switch to MSM4, drop a constellation, or filter types here.

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