Method for detecting spoofing in a GNSS (global navigation satellite system) receiver, corresponding receiver apparatus method and computer program product

A device, comprising:

• a memory;
• and
• signal processing circuitry coupled to the memory, wherein the signal processing circuitry, in operation:
• implements a satellite tracking channel having a frequency loop tracking a carrier frequency of a satellite signal;
• determines a satellite signal noise floor value associated with the satellite tracking
• generates a first indication of a spoofed signal based on the determined satellite signal noise floor value and a tracking channel signal noise threshold associated with the satellite tracking channel;
• determines a satellite tracking phase noise associated with the satellite tracking channel;
• generates a second indication of a spoofed signal based on the determined satellite tracking phase noise and a tracking channel phase noise threshold associated with the satellite tracking channel;
• and
• detects reception of a spoofed signal on the satellite tracking channel based on the generated first indication of a spoofed signal and the generated second indication of the spoofed signal.

A system, comprising:

• a host processor;
• and
• signal processing circuitry coupled to the host processor, wherein the signal processing circuitry, in operation:
• implements a satellite tracking channel having a frequency loop tracking a carrier frequency of a satellite signal;
• determines a satellite signal noise floor value associated with the satellite tracking channel;
• generates a first indication of a spoofed signal based on the determined satellite signal noise floor value and a tracking channel signal noise threshold associated with the satellite tracking channel;
• determines a satellite tracking phase noise associated with the satellite tracking
• generates a second indication of a spoofed signal based on the determined satellite tracking phase noise and a tracking channel phase noise threshold associated with the satellite tracking channel;
• and
• detects reception of a spoofed signal on the satellite tracking channel based on the generated first indication of a spoofed signal and the generated second indication of the spoofed signal.

A non-transitory computer-readable medium having contents which cause a signal processing system to perform a method, the method comprising:

• implementing a satellite tracking channel having a frequency loop tracking a carrier frequency of a satellite signal;
• determining a satellite signal noise floor value associated with the satellite tracking channel;
• generating a first indication of a spoofed signal based on the determined satellite signal noise floor value and a tracking channel signal noise threshold associated with the satellite tracking channel;
• determining a satellite tracking phase noise associated with the satellite tracking channel;
• generating a second indication of a spoofed signal based on the determined satellite tracking phase noise and a tracking channel phase noise threshold associated with the satellite tracking channel;
• and
• detecting reception of a spoofed signal on the satellite tracking channel based on the generated first indication of a spoofed signal and the generated second indication of the spoofed signal.