Navigation device and method for determining navigation information

A method for determining navigation information, the method comprising:

• receiving at least a first signal from at least a first navigation satellite, the signal comprising a first timestamp;
• determining a velocity of the first navigation satellite at the first timestamp in a second coordinate system based on ephemeris data of the first navigation satellite, the second coordinate system being tilted in relation to the equatorial plane;
• determining a velocity of the first navigation satellite in a first coordinate system that is earth fixed and rotating with earth based on the determined velocity in the second coordinate system;
• determining navigation information of the receiving circuit within the first coordinate system based on at least the determined velocity of at least the first navigation satellite.

A determination device in a system for determining navigation information of a navigation device, the determination device comprising:

• a determination circuit and a communication circuit,
• the determination circuit configured to determine a velocity of a first navigation satellite for a first timestamp in a second coordinate system based on ephemeris data of the first navigation satellite, the second coordinate system being tilted in relation to the equatorial plane;
• the determination circuit further configured to determine a velocity of the first navigation satellite in a first coordinate system that is earth fixed and rotating with earth based on the determined velocity in the second coordinate system;
• the communication circuit configured to send the determined velocity to the navigation device.