Interference monitoring, Detection, Mitigation
High performance in terms of position estimation accuracy and service continuity are the main focus for several applications based on satellite navigation systems. Though the use of the Direct Sequence Spread Spectrum (DS-SS) technique brings an intrinsically robustness, the received signal power (approximately 20 dB/Hz below the noise floor) makes the system vulnerable to different disturbs. Among them, the interference from other electromagnetic sources can be one of the most harmful.
The research activity studies the implementation of original algorithms able to provide to the receiver added value capabilities for dealing with interfered environments, and thus yielding to better performance in critical scenarios. The interference monitoring covers different aspects:
- Detection: to discover the presence of electromagnetic sources that might compromise the proper receiver operation;
- Characterization: to estimate the characteristics of the undesired signals;
- Mitigation: to partially mitigate or completely delete the interference effects.