Apparatus and method for detecting reception environment of small and mobile gnss receiver

A method of determining a reception environment of a GNSS (global navigation satellite system) receiver, the method comprising:

• receiving a satellite signal from a satellite, processing the satellite signal into a baseband signal, and outputting the baseband satellite signal as input data;
• extracting, from one or more sensors coupled to the GNSS receiver, a first plurality of features related to motion characteristics of a user wearing the GNSS receiver and extracting, from the input data, a second plurality of features related to the satellite;
• preprocessing the first plurality of features and the second plurality of features for input to a machine learning model;
• selecting a third plurality of features used for classification of the machine learning model by reducing dimensions of the first plurality of features and the second plurality of features;
• outputting environment information indicating the reception environment using the third plurality of features and the machine learning model;
• and
• calculating position information indicating a position of the GNSS receiver based on the satellite signal and the environment information.

A mobile device comprising:

• a processor;
• a memory configured to store data processed by the processor;
• and
• a GNSS (global navigation satellite system) receiver controlled by the processor, and
• wherein the GNSS receiver comprises:
• a signal processing module configured to:
• receive a satellite signal from a satellite, to process the satellite signal into a baseband signal, and
• output the baseband satellite signal as input data;
• a classification module configured to:
• determine a reception environment of the satellite signal through a machine learning model by extracting, from one or more sensors coupled to the GNSS receiver, a first plurality of features related to motion characteristics of a user wearing the GNSS receiver and extracting, from the input data, a second plurality of features related to the satellite, and
• output environment information indicating the determined reception environment;
• and
• a position calculation module configured to calculate position information indicating a position of the GNSS receiver based on the satellite signal and the environment information.