Abstract: Provided is an apparatus and method for calibrating acquired scattering data in a three-dimensional (3D) microwave imaging system. A scattering data calibrating method may include acquiring microwave scattering data for each height of a tank containing a target using a microwave transceiving sensor; and calibrating the microwave scattering data based on a variation between a plurality of sets of microwave scattering data. A height of the tank at which the microwave scattering data is to be acquired may be determined based on a height of the microwave transceiving sensor is located in the tank.

Abstract: Provided is an electromagnetic wave sensor including a thin metal plating layer to prevent an inflow of a fluid into the electromagnetic wave sensor and a method of generating the electromagnetic wave sensor, in which the electromagnetic wave sensor includes a waveguide including a conductor to sense an electromagnetic wave, a ceramic layer accommodated in the waveguide and including a dielectric to reduce a dielectric loss of the electromagnetic wave, and the thin metal plating layer disposed between the waveguide and the ceramic layer to prevent the inflow of the fluid into the electromagnetic wave sensor.

Abstract: A method for controlling antennas in a vehicle having an external antenna and an internal antenna includes triggering an eCall service function upon sensing an accident occurrence event, measuring a quality of one or more wireless signals received through the external antenna, comparing the measured quality of the wireless signals with a reference quality value, and selecting one of the external antenna and the internal antenna to be used in the eCall service function based on the results of the step of comparing the measured quality of the wireless signals with the reference quality value. A system of emergency communication of a vehicle is also provided.

Abstract: A sensor includes a tank filled with a matching medium, a metal body configured to surround an image object received in the tank, and a plurality of apertures disposed at constant intervals inside the metal body, wherein when any one of the plurality of apertures radiates microwaves to the image object, remaining apertures receive scattering microwaves from the image object.

Abstract: An apparatus and method of controlling a temperature of a matching material used in an apparatus for generating a tomographic image is disclosed. The method includes measuring a temperature of a matching material in which an object is immersed in an apparatus for measuring a shape of an object, setting a set temperature at which an amplitude and a phase of an electromagnetic wave that passes through the matching material are maintained, based on the measured temperature of the matching material, and controlling the temperature of the matching material to be higher than the set temperature.

Abstract: An apparatus and method of controlling a temperature of a matching material used in an apparatus for generating a tomographic image is disclosed. The method includes measuring a temperature of a matching material in which an object is immersed in an apparatus for measuring a shape of an object, setting a set temperature at which an amplitude and a phase of an electromagnetic wave that passes through the matching material are maintained, based on the measured temperature of the matching material, and controlling the temperature of the matching material to be higher than the set temperature.

Abstract: A sensor includes a tank filled with a matching medium, a metal body configured to surround an image object received in the tank, and a plurality of apertures disposed at constant intervals inside the metal body, wherein when any one of the plurality of apertures radiates microwaves to the image object, remaining apertures receive scattering microwaves from the image object.