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General Terms
LKS-92
Latvian Geodetic Coordinate System, the official national coordinate system for all surveying and cartographic work.
LKS-92 (Latvian Coordinate System 1992) is the official geodetic coordinate system of the Republic of Latvia, used for all national surveying, cartographic, and geospatial data work. The system was introduced in 1992.
LKS-92 technical parameters:
- Projection - Transverse Mercator (TM)
- Ellipsoid - GRS-80
- Central meridian - 24° east longitude
- Scale factor - 0.9996 at central meridian
- False easting - 500,000 m
- False northing - 0 m
- Unit - meter
LKS-92 coordinate range in Latvia:
- X coordinates - approximately 300,000 - 750,000 m
- Y coordinates - approximately 6,100,000 - 6,450,000 m
LKS-92 advantages:
- Optimized for Latvian territory
- Minimal projection distortions
- Convenient for use in plane coordinates
- Compatible with European systems (ETRS89)
LKS-92 usage:
- Cadastral surveying - all land parcel plans
- Topographic surveying - topographic plans
- Construction - construction project coordinates
- Cartography - national maps and plans
- Geographic information systems - spatial databases
Connection with other systems:
- WGS-84 → LKS-92 - transformation from GPS data
- ETRS89 → LKS-92 - practically identical
- Old systems → LKS-92 - recalculations from historical data
Height system:
LKS-92 is used together with the Latvian Normal Height System LAS-2000.5, based on the Amsterdam sea level (EVRS).
Practical tips:
- GNSS measurements are initially WGS-84 - transformation needed
- Always verify which system the received data is in
- Use certified transformation parameters