RELIABLE DISTANCE MEASURING SYSTEM Russian patent published in 2023 - IPC G01S5/02 H04W4/02 H04W64/00 H04W12/00 

FIELD: location determination systems.

SUBSTANCE: invention is related to checking distance measurements between wireless communication devices based on the time of arrival of the measurement message. For this purpose, the device is configured to measure a distance in accordance with a ranging protocol using a measurement message from a second device. Based on the first arrival time of the measurement message, a first distance (151) between the first device (110) and the second device (120) is determined. The third device (130) acts as a communicating device that is located at a valid distance (150). The communicating device determines a third arrival time of the same measurement message and transmits support data to the first device, the support data being based on the third arrival time. The first device determines a third distance (153) between the third device and the second device using the support data. A verification test is then performed at the first distance (151), the valid distance (150), and the third distance (153). The first distance is reliable when the specified distances and angles correspond to an acceptable spatial population (100) of devices.

EFFECT: increase of reliability of distance measurement based on arrival time.

16 cl, 4 tbl, 11 dwg