Galileosignaalit

Galileosignaalit refers to the radio signals broadcast by the Galileo satellite navigation system. This European system provides positioning, navigation, and timing (PNT) services globally. The signals are transmitted on several frequency bands, primarily L1, E5, and E6.

The L1 band signal is accessible to both the Open Service and the Commercial Authentication Service, offering broad compatibility with existing GPS receivers. The E5 band, which is split into E5a and E5b, provides a wider signal bandwidth, leading to improved accuracy and robustness against interference. The E6 band is primarily used for the Public Regulated Service (PRS), a secure service intended for authorized government users.

The characteristics of these signals, including their structure, modulation, and power levels, are defined in the Galileo Signal In Space Interface Control Document (ICD). This document is crucial for receiver manufacturers to design equipment capable of tracking and processing Galileo signals. The system's design aims to provide high accuracy and integrity, making it a valuable tool for various applications, including maritime, aviation, land transport, and precision agriculture. The ability to receive signals from multiple constellations, such as Galileo and GPS, enhances the overall availability and accuracy of PNT solutions.