Real-time estimation of speed and gait characteristics using a custom estimator

A non-transitory, computer-readable medium storing instructions that, when executed by one or more processors of a computing device, cause the computing device to:

• monitor a first plurality of parameters indicative of movement of a user, wherein the first plurality of parameters includes (i) a first GNSS-derived speed of the user and (ii) a step count of the user;
• process values of the monitored first plurality of parameters to determine values of a second plurality of parameters indicative of movement of the user,
• wherein processing values of the monitored first plurality of parameters includes using values of at least one of the monitored first plurality of parameters
• to generate one or more inputs to an estimator having the second plurality of parameters as estimator states, and
• wherein at least two parameters of the second plurality of parameters are collectively indicative of a mapping between step frequency of the user and step length of the user;
• and
• display on a graphical user interface of the computing device, or cause a graphical user interface of another computing device to display, values of one or both of (i) at least one of the second plurality of parameters, and (ii) at least one parameter derived from one or more of the second plurality of parameters.

A mobile computing device comprising:

• a display screen;
• one or more processors;
• and
• a memory storing instructions that, when executed by the one or more processors, cause the mobile computing device to
• monitor a first plurality of parameters indicative of movement of a user of the mobile computing device, wherein the first plurality of parameters includes (i) a first GNSS-derived speed of the user and (ii) a step count of the user,
• process values of the monitored first plurality of parameters to determine values of a second plurality of parameters indicative of movement of the user,
• wherein processing values of the monitored first plurality of parameters includes using values of at least one of the monitored first plurality of parameters to generate one or more inputs to an estimator having the second plurality of parameters as estimator states, and
• at least two parameters of the second plurality of parameters are collectively indicative of a mapping between step frequency of the user and step length of the user, and
• display, on a graphical user interface presented on the display screen, values of one or both of (i) at least one of the second plurality of parameters, and (ii) at least one parameter derived from one or more of the second plurality of parameters.