Skip to content

Højpræcisions punktpositionering (PPP) i skyen

Upload RINEX-data fra en basestation eller rover og modtag nøjagtige ITRF/WGS84-koordinater korrigeret for atmosfæriske forsinkelser.

Processing needs an account. This panel is a first step: it checks your file and needs no account.

Start PPP-beregning

Quick check, no account

Upload an observation file or open a sample to see its quality score and key findings.

One file up to 100 MB (20 MB gzipped), ten checks per day. The file is deleted as soon as the result is ready.

Quick question, so we know you are a person

Choose a file first

No file? Use a public station
Bundled sample

Opens a stored example result straight away and does not use one of your daily checks.

Live archive day

Fetches a station's daily observation file from the public archives and checks it. It needs the person check above and uses one of your daily checks.

Between 2010-01-01 and 2026-10-17 (UTC).
Try:

Kapacitet i PosFlow Apex PPP-beregningsmotoren

  • Statisk PPP-løsning til geodætiske kontrolnet og CORS-stationer
  • Kinematisk PPP-baneberegning til droner, køretøjer og søopmåling
  • Fleksibelt udvalg af konstellationerne GPS, GLONASS, Galileo og BeiDou (per solution)
  • Automatisk indhentning af præcise efemerider (IGS Final, Rapid, Ultra-Rapid)
  • Anvendelse af absolutte ANTEX-fasecentermodeller og estimering af troposfæreforsinkelse
  • Apex Duo: parallel sammenligning af to uafhængige beregningsmotorer

How to compute precise point positioning (PPP) online

Process single-station RINEX observations and review the PPP solution, processing settings and quality indicators.

  1. Upload observation session

    Upload RINEX observations with the signals, time coverage and station metadata required by the selected processing mode.

  2. Select antenna model and height

    Specify antenna model from the absolute calibration database and enter antenna reference point (ARP) height.

  3. Automated ephemeris pairing

    The system pairs matching IGS, CODE, or GFZ final/rapid precise orbits and satellite clock corrections.

  4. Solve and download coordinates

    Review converged coordinates in ITRF/WGS84, formal standard deviations, residual plots, and processing reports.

What won't produce a result

Worth checking before you upload, so a run doesn't cost you credits to tell you what your data was missing.

A short or discontinuous static observation session

A long enough, uninterrupted observation window. PPP resolves ambiguities through convergence, and a short or frequently broken session may never converge on a stable coordinate.

A session with frequent cycle slips

Continuous carrier-phase tracking. Repeated slips reset the convergence the solution depends on, the same way restarting a session would.

Single-frequency-only observations

Dual-frequency (or better) tracking. A single frequency carries no way to form the ionosphere-free combination the solution needs to cancel that delay.

Common questions

Hvad kræves der til en statisk PPP-beregning?

Du skal blot uploade RINEX-observationsfilen fra én tofrekvensmodtager. En lokal basestation er unødvendig, da koordinaterne beregnes mod globale præcise satellitbaner.

Related technical guides

Standards & Specifications

Apex requires Pro or above and processing credits. View plans and usage costs

Start PPP-beregning