Position measurement device using UWB antenna

Abstract

The present disclosure proposes a position measurement device using UWB antennas, which distinguishes between a measurement target located indoors and a measurement target located outdoors on the basis of UWB signals received from a plurality of UWB antennas. The proposed position measuring device comprises: a first UWB antenna; a second UWB antenna; a third UWB antenna; a signal processing module that outputs a signal received from the first UWB antenna and a UWB signal received from at least one of the second UWB antenna and the third UWB antenna; and the position measurement module is used for measuring the position of the measurement target based on the UWB signal output by the signal processing module.

Description

technical field [0001] The present disclosure relates to a UWB antenna module for receiving an Ultra-Wide Band (UWB) signal, and a position measurement device for measuring a position of a measurement target using a signal received from the UWB antenna module. Background technique [0002] With the development of various communication technologies in recent years, vehicles provide drivers with various convenient functions by reflecting location information. In other words, the vehicle measures location information such as the distance between the driver and the vehicle, the location of the driver, and the location of the vehicle through communication, and provides various convenient functions to the driver using the measured location information. [0003] For example, the vehicle provides the ability to use the driver's position and the vehicle's position to guide the driver's path to a parked vehicle; or use the distance between the driver and the vehicle to open the doors ...

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Problems solved by technology

[0007] However, UWB communication has a problem that position information cannot be measured under certain conditions because antenna performance varies greatly depending on the directionality of the UWB antenna module and the surrounding environment

In other words, the problem with UWB antenna modules is that signal loss and multipath fading due to the influence of metal parts of the vehicle or the human body in a specific direction can cause positioning errors and deviations

[0008] For example, there is a problem that if the UWB antenna module is placed in the back pocket of the person with the key fob, or when there is another vehicle between the person and the vehicle, it will be affected by the metal parts of the vehicle or the human body in a certain direction. This leads to signal loss and multipath fading, which leads to errors or deviations in the position information measured through UWB communication.

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