FLUX
Format Conversion
Native converters for u-blox, Septentrio, Trimble, Leica, Topcon, NovAtel, and Javad raw receiver logs into standard RINEX 2/3/4, with Hatanaka compression and batch pipelines.
About PosFlow
Unified in the cloud, From Signal to Truth
PosFlow is the cloud-native geodetic processing platform for surveying and geophysics professionals. Unifying format conversion, deep quality analysis, scientific positioning, and datum transformation into one traceable workspace.
Core Capabilities
Four Specialist Pillars Covering the Entire GNSS Lifecycle
Leave behind unsupported legacy binaries, isolated tools, and manual ephemeris downloads. From raw binary ingest to final coordinate delivery, work entirely in one unified cloud workspace.
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CRUX
Quality Control
Modern replacement for unmaintained TEQC. Multi-GNSS 0–100 composite scoring, epoch completeness, cycle slip tracking, multipath MP1/MP2 estimation, and SNR elevation profiles.
APEX
Precise Positioning
Automated precise orbit/clock retrieval for static and kinematic PPP, drone and vehicle PPK baselines, multi-station network adjustment, and dual-engine cross-validation.
AXIS
Coordinate Transformation
Rigorous geodetic transformations across CGCS2000, WGS84, ITRF realizations, and Gauss-Kruger / UTM projections with full EPSG parameter lineage.
Processing Pipeline
A Closed-Loop Geodetic Workflow
Every phase connects seamlessly to ensure contaminated observations never waste compute, and final coordinates are mathematically traceable.
01FLUX Conversion
Raw Ingestion & Standardization
Upload heterogeneous multi-vendor raw binary logs. Receiver chips and formats are automatically identified and converted to clean RINEX 2/3/4 or CRX.
02CRUX Gatekeeping
Pre-Processing QC
Screen observation files before intensive computation. Detect tracking gaps, cycle slip spikes, multipath, and clock anomalies to filter unviable sessions.
03APEX Positioning
Scientific Geodetic Solving
Automatically pair with IGS and CODE precise orbits. Solve PPP, PPK trajectories, or network adjustments with dual-engine independent validation.
04AXIS Delivery
Datum Projection & Delivery
Transform geocentric coordinates into national survey datums (CGCS2000, ETRS89) or local projected grids with exportable audit reports.
Engineering Heritage
Built by Geodesy & CORS Network Engineers
PosFlow was founded by engineers with deep frontline experience at industry leaders including Leica Geosystems and Qianxun SI (千寻位置). Having managed large-scale multi-constellation CORS networks and high-precision GNSS positioning infrastructure, we understand the practical challenges surveyors and geodetic engineers face in the field.
We experienced firsthand the frustration of dealing with discontinued legacy tools like TEQC, proprietary multi-vendor raw formats, and unreliable positioning runs caused by undetected cycle slips or multipath. PosFlow was created to give professionals modern, automated, and scientific-grade cloud processing tools with zero installation.
Core Values
What drives us
Verifiable precision
Every result carries traceable residuals and quality indicators. No black boxes.
Speed without trade-offs
Cloud-scale processing delivers results in seconds, not hours — without sacrificing rigor.
Open standards
RINEX 2/3/4, RTCM, SP3, SINEX — we speak every format in the GNSS ecosystem.
Transparent pricing
Pay per task or choose a plan. No hidden compute charges, no surprise invoices.
Frequently Asked Questions
Capabilities & Applications
How does PosFlow differ from desktop GNSS tools like TEQC, RTKLIB, or TBC?
Traditional desktop software requires local installation, manual ephemeris downloads from CDDIS/IGS, and tools like TEQC cannot process BeiDou-3 or Galileo signals. PosFlow provides a unified cloud platform integrating format conversion, multi-GNSS QC, PPP/PPK solving, and coordinate transformation in any browser.
What GNSS raw data formats can PosFlow convert?
Via Flux, PosFlow natively ingests u-blox (.ubx), Septentrio (.sbf), Trimble (.dat, .t02), Leica, Topcon, NovAtel, and Javad logs, converting them to RINEX 2.11, 3.04, or 4.02 with optional Hatanaka compression.
What post-processing scenarios does Apex support?
Apex handles long-session static PPP, kinematic PPP for moving platforms, baseline PPK for drone photogrammetry and mobile mapping, as well as multi-station control network adjustments with rigorous covariance reporting.
Does PosFlow support national datums like CGCS2000 and local grids?
Yes. Axis supports 3D datum transformations between WGS84, CGCS2000, and ITRF realisations, along with Gauss-Kruger 3°/6° projection zones, UTM, and the full EPSG coordinate registry for single points or batch CSV files.