Inertial sensor calibration based on power budget

A global navigation satellite system (GNSS) enabled device, comprising:

• an inertial sensor configured to acquire motion data of the GNSS enabled device;
• and
• a receiver circuitry configured to:
• determine an amount of power available at the GNSS enabled device;
• select a first mode of a plurality of modes in a first GNSS technology of the GNSS enabled device, wherein
• a positioning error value is specified for each mode of the plurality of modes supported at the GNSS enabled device,
• the first mode of the plurality of modes is selected based on the amount of the power available at the GNSS enabled device and the positioning error value associated with the first mode, and
• the positioning error value associated with the first mode is less than a specified position accuracy threshold;
• receive radio frequency (RF) signals from at least one space-vehicle in the first mode of the first GNSS technology for a first time period;
• calibrate the inertial sensor based on the received RF signals in the first mode of the first GNSS technology,
• wherein the calibrated inertial sensor is configured to measure a position of the GNSS enabled device for a second time period based on the acquired motion data;
• switch from the first mode to a second mode of the plurality of modes based on the amount of the power available at the GNSS enabled device and power consumption associated with each of the plurality of modes, wherein the power consumption associated with the second mode in the first GNSS technology is less than the power consumption associated with each of remaining modes of the plurality of modes in the first GNSS technology;
• switch to an OFF state for the second time period in the second mode;
• and
• control the second time period based on the specified position accuracy threshold and an operating environment of the GNSS enabled device.

A method, comprising:

• in a global navigation satellite system (GNSS) enabled device that comprises an inertial sensor and a receiver circuitry:
• determining, by the receiver circuitry, an amount of power available at the GNSS enabled device;
• selecting, by the receiver circuitry, a first mode of a plurality of modes in a first GNSS technology of the GNSS enabled device, wherein
• a positioning error value is specified for each mode of the plurality of modes supported at the GNSS enabled device,
• the first mode of the plurality of modes is selected based on the amount of the power available at the GNSS enabled device and the positioning error value associated with the first mode, and
• the positioning error value associated with the first mode is less than a specified position accuracy threshold;
• calibrating, by the receiver circuitry, the inertial sensor based on the selected first mode in the first GNSS technology;
• and
• switching, by the receiver circuitry, from the first mode to a second mode of the plurality of modes based on the amount of the power available at the GNSS enabled device and power consumption associated with each of the plurality of modes, wherein the power consumption associated with the second mode in the first GNSS technology is less than the power consumption associated with each of remaining modes of the plurality of modes in the first GNSS technology;
• switching, by the receiver circuitry, to an OFF state for a time period in the second mode;
• acquiring, by the inertial sensor, motion data of the GNSS enabled device to measure a position of the GNSS enabled device, in the OFF state;
• and
• controlling, by the receiver circuitry, the time period based on the specified position accuracy threshold and an operating environment of the GNSS enabled device.