Methods for training a model for use in radio wave based blood pressure monitoring

A method for training a model for use in monitoring a health parameter in a person, the method comprising:

• monitoring a blood pressure of a person using a control blood pressure monitoring system;
• receiving control data that corresponds to the monitoring using the control blood pressure monitoring system;
• receiving stepped frequency scanning data that corresponds to radio waves that have reflected from blood in a blood vessel of the person, wherein the stepped frequency scanning data is collected through multiple receive antennas over a range of frequencies;
• generating training data by combining the control data with the stepped frequency scanning data in a time synchronous manner;
• and
• training a model using the training data to produce a trained model, wherein the trained model correlates stepped frequency scanning data to values that are indicative of a blood pressure of a person;
• wherein the stepped frequency scanning data includes time, frequency, amplitude, phase, and antenna orientation data over a range of frequencies for each of a plurality of receive antennas in a two-dimensional array of receive antennas.