The GPSxNAV_1B Products contain the spacecraft position and velocity from the on-board navigational solution of the GPSR in the World Geodetic System 1984 (WGS84) reference frame. The product store the Navigational solution in ASCII format, following the Extended Standard Product 3 Orbit Format (SP3c)

Level 1B Product Descriptions:

• Swarm Level 1B Processor Algorithms
• Swarm Level 1B Product Definition

SP3 format Description

• The Extended Standard Product 3 Orbit Format (SP3-c) by Steve Hilla, National Geodetic Survey, NOAA, USA, Dated: 2010-08-17