# LRK

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> Source: https://en.wikipedia.org/wiki/LRK
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> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

For other uses, see [LRK (disambiguation)](/source/LRK_(disambiguation)).

**Long Range Kinematic** (**LRK**) [technology](/source/Technology) is a sophisticated [kinematic](/source/Kinematics) method developed by [Magellan (formerly Thales) Navigation](/source/Magellan_Navigation) that optimises the advantages of dual-frequency [GPS](/source/GPS) operation. Other conventional methods use the dual-frequency only during [initialisation](/source/Initialization_(programming)). LRK makes solving ambiguities during initialisation easy and continuous dual-frequency kinematic operation possible at distances up to 40 [kilometres](/source/Kilometre).

Conventional dual-frequency kinematic operation is limited to about 10 kilometres, using a combined observation on [GPS](/source/GPS_signals) [L1 and L2](/source/L_band) [frequencies](/source/Electromagnetic_spectrum) to produce an initial wide lane solution, ambiguous to around 86 centimetres. During a second phase, the conventional kinematic method uses measurements from the L1 frequency only. This method only allows for kinematic operation as long as the de-correlation of atmospheric errors is compatible with a pure phase [single-frequency](/source/Single-frequency_network) solution.

Similar to the [KART](/source/Real-time_kinematic) process, LRK is a simple and reliable method that allows any initialisation mode, from a static or fixed reference point, to [On The Fly](/source/On_the_fly) ambiguity resolution, when performing dual-frequency GPS positioning. LRK technology reduces initialisation times to a few seconds by efficiently using L2 measurements in every mode of operation. LRK maintains optimal real-time positioning accuracy to within a centimetre at a range up to 40-50 kilometres, even with a reduced number of visible [satellites](/source/Satellite).

## External links

- [https://web.archive.org/web/20060821080822/http://products.thalesnavigation.com/en/products/aboutgps/rtk.asp](https://web.archive.org/web/20060821080822/http://products.thalesnavigation.com/en/products/aboutgps/rtk.asp)

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Adapted from the Wikipedia article [LRK](https://en.wikipedia.org/wiki/LRK) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/LRK?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.