System and method for distance measurement using UWB radar

A device comprising:

• a transceiver;
• and
• a processor operably connected to the transceiver, the processor configured to:
• obtain a channel impulse response (CIR) based on multiple ultrawide band (UWB) measurements between a mobile device and a target object;
• calculate a range profile and frequency profile based on the CIR;
• in response to determining that a dominant peak in the frequency profile is above a first predetermined threshold, estimate a first distance between the mobile device and the target object based on the range profile;
• estimate a second distance between the mobile device and the target object based on a phase of the CIR;
• and
• obtain an estimated distance between the mobile device and the target object based on at least one of the first distance and the second distance.

A non-transitory computer readable medium comprising program code that, when executed by a processor of a device, causes the device to:

• obtain a channel impulse response (CIR) based on multiple ultrawide band (UWB) measurements between a mobile device and a target object;
• calculate a range profile and frequency profile based on the CIR;
• in response to determining that a dominant peak in the frequency profile is above a first predetermined threshold, estimate a first distance between the mobile device and the target object based on the range profile;
• estimate a second distance between the mobile device and the target object based on a phase of the CIR;
• and
• obtain an estimated distance between the mobile device and the target object based on at least one of the first distance and the second distance.