- Coverage is intermittent, so correction-age limits and outage behavior are critical.
Positioning decision workspace
Choose the chain.
Rehearse the failure.
Translate an agricultural operation into positioning requirements, compare generic correction architectures, simulate a broken link, and leave with the questions a provider or integrator must answer.
01Define
02Compare
03Trace
04Disrupt
05Question
06Document
07Field test
08Export
Define what the position must support.
Correction labels mean little until the operation, repeatability horizon, environment, infrastructure, and stop policy are explicit.
Compare families, not slogans.
A candidate is a path worth validating—not a performance guarantee. Select one to inspect its chain and open questions.
| Family | Correction architecture | Delivery | Field dependency |
|---|---|---|---|
| Autonomous GNSS | Receiver solves position from broadcast constellation signals. | No external correction stream | Receiver and clear sky |
| Space-based augmentation | Regional monitoring produces augmentation delivered by satellite. | Regional satellite broadcast | Compatible receiver and service footprint |
| Local-base RTK | A fixed local base and rover resolve a relative carrier-phase position. | Usually local radio or internet | Surveyed base, link, rover, and operations |
| Network RTK / CORS service | A reference-station network models corrections for a connected rover. | Usually cellular internet | Coverage, account, data link, compatible receiver |
| Satellite-delivered precise correction | Wide-area precise products support a rover position without a nearby user base. | Satellite broadcast, sometimes internet | Subscription or service access and compatible receiver |
Follow the dependency path.
The selected family changes the middle of the chain. Every node still needs evidence before a machine function can rely on the result.
01 / SPACEConstellationsSignals + timing
02 / FIELDAntenna + receiverTracking + observations
03 / CORRECTNetwork RTK / CORS serviceUsually cellular internet
04 / SOLVEPositioning engineMode + integrity state
05 / USEPrecision applicationMachine or data workflow
Break the chain before the field does.
Change the observed states. The response is based on your declared stop policy, not a guessed duration or accuracy value.
READY
Inputs are nominal—not independently proven
- Apply the operation-specific acceptance check before work.
- Continue monitoring correction, sky, and initialization state.
Turn a candidate into a field decision.
These questions remain open even when a vendor advertises a familiar correction label.
- How does the system disclose correction age and reconnection state?
- Which reference frame, epoch, mountpoint, and transformation are used?
- Confirm receiver, firmware, activation, region, and delivery-channel compatibility.
- Confirm the local stop, resume, and responsible-person procedure.
Make the exact chain identifiable.
Record enough detail to ask a provider, dealer, integrator, or internal reviewer a testable question. Do not enter account credentials, correction keys, or coordinates.
UNKNOWN7
DOCUMENTED0
FIELD VERIFIED0
BLOCKED7 evidence topics remain unknown.
Does current provider evidence cover the intended region and delivery channel?
Observe actual availability at the intended operating area.Do receiver model, firmware, activation, and correction input match?
Confirm the receiver reports the expected correction mode.Are modem, radio, satellite reception, account, and data plan dependencies known?
Exercise the real end-to-end link rather than a bench assumption.Are frame, datum, epoch, base coordinate, and transformations documented?
Check a known reference without storing its coordinates in this tool.Can the operator see correction mode, initialization, age, and warning state?
Verify that status changes are visible during normal and degraded operation.Does documentation define loss, degradation, continuity, and reacquisition behavior?
Rehearse a safe interruption and compare the result with documentation.Is one person responsible for evidence, acceptance, stop, and resume decisions?
Record who observed the trial and who can accept or reject the result.A selected status is a user assertion. World Farm Tech does not inspect the underlying document, receiver, subscription, field, or machine.
Plan the trial before accepting the promise.
The sequence converts the open evidence questions into observable field checks. Use equipment documentation, a safe test area, and a qualified responsible person.
Record receiver, firmware, correction mode, initialization, and warning state.
CAPTURE / Status record plus reviewer and time.Run the operation-specific reference check under a documented open-sky condition.
CAPTURE / Declared criterion, observation, and result.Introduce only a safe, expected obstruction condition and observe state recovery.
CAPTURE / State transitions and resume decision.Safely interrupt the applicable correction delivery path and observe the response.
CAPTURE / Warnings, reported mode, continuity behavior, and stop response.Repeat the declared reference check across the required time horizon.
CAPTURE / Comparable observations using the same documented method.Confirm the connected workflow follows its documented degraded and stop behavior.
CAPTURE / Observed machine or application response; no control is performed by this tool.Collect documentation, observations, exceptions, owner, and final review outcome.
CAPTURE / Signed or otherwise accountable external record.TRIAL GATEnot ready
Next unresolved step: 01 / Pre-start state.
- not planned
- 7
- planned
- 0
- passed
- 0
- needs work
- 0
“Passed review” means only that the user recorded a result against an externally defined criterion. It is not certification, safety approval, or permission to operate.
08 / BROWSER-LOCAL HANDOFFExport one inspectable validation-planning packet.
The JSON packet combines requirements, selected architecture, simulated outage, equipment profile, evidence states, and the field acceptance plan. No coordinates or credentials leave this browser.
Inspect the methods behind the shortlist.
Continue into real-time kinematic positioning, reference-station networks, and precise point positioning. Each briefing explains the architecture without turning a method name into a performance promise.