KUON MAP

Recording since 2026-07-03

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⬆ Add RTK logs (multiple) Stack .log / .nmea / .ubx files 🧰 Converters (RINEX, viewer, GPX/KML) →

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A link that restores the current view (position, zoom, basemap, active layers). Paste the embed code into a blog and a live map appears (loaded logs stay local, so they are not included).

Latitude—

Longitude—

DMS—

UTM—

MGRS—

JPN Grid—

Plus Code—

geohash—

ECEF (m)—

Geoid height—

Ellip. h → elev.—

Baseline checker—

Geodesic baseline length from the reticle center to the nearest online base station, with a quality hint. ≤10 km = cm-grade, ≤20 km = practical, beyond = ionosphere/troposphere error grows. Computed client-side, no network.

Magnetic declination—

How far magnetic north deviates from true north. E = magnetic north is east of true north, W = west. For aligning map & compass and calibrating drone heading. Model: NOAA/NGA/BGS WMM2025 (2025–2030, global). Computed client-side, no network.

Geoid: JGEOID2024 (source: GSI Japan survey calculation service, Japan only)

Live readout of the map-center (reticle) position in every coordinate system. ⧉ to copy. Works alongside RTK logs, weather and base stations.

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Community RTK base stations worldwide (RTK2GO) with live status. Green = online, red = offline (seen within 48 h). Zoom in to see coverage: light green = 10 km baseline (cm-grade), yellow = 20 km (practical range). Click for copyable connection details. Stations are run by volunteers - use with gratitude and moderation.

📊 RTK reference stations - see all, ranked by completeness & uptime →

▦ Opportunity areas - where the next station helps most (nearest active base >20 km · Japan)

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A daily-collected record of bear sightings from municipal/government public data (coverage expanding · currently Sapporo, 2017-). Not a safety guarantee. Details & sources: Bear sightings archive. Source: City of Sapporo (CC BY 4.0)

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GNSS signal quality (RFI · interference signs). A 24-hour aggregate of positioning accuracy reported by aircraft overhead: yellow = some, red = many aircraft reported reduced accuracy. This does not mean ground GPS or your phone is unusable (mostly military jamming or exercises near conflict zones; airspace with no color = normal). Daily update. DATA: GPSJAM (John Wiseman, CC BY) · ADS-B Exchange

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Default shows the last 24 hours of earthquakes. Circle = magnitude, color = time since (redder = newer; within 1 hour has a ring). The 7-day view shows M4.5+ history. Updates every 5 min. Click for details. DATA: USGS · JMA (Japan detail with intensity)

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Live webcams worldwide. Click an icon to watch - ★ marks KUON curated video streams. Numbers are clusters (click to expand). Webcams by windy.com

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Opacity

Click the map for point weather (temperature, wind, precip probability, clouds). Radar time buttons: now → +60 min KUON forecast - cloud motion is analyzed and extrapolated in real time. Temp/pressure stretch to the visible range (see legend).

AClick the map to set

B—

Calculating route…

🚶 Walk——

🚲 Bike——

🚗 Car——

Avg. car speedkm/h

Click the map to set A→B. The shortest road route is computed. A third click restarts from a new A.

Points0

Distance (geodesic)—

Last segment—

Click the map to add points. Measure between RTK points to read centimeters.

🗾 GSI

Local—

Center—

Stack multiple logs as layers. Zoom up to 24 (1 px ≈ 1 cm).

Choose a log to replay×

Elapsed

0:00

Distance

0 m

Speed

0.00 m/s

Fix quality

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Horizontal accuracy

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Elevation

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Grade

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Satellites

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Speed Camera

Trip summary×