Abstract: An eco-friendly power source, such as a battery module for a transportation vehicle includes a first sub-module and a second sub-module each including a plurality of battery cells; a lower cover supporting the first sub-module and the second sub-module; a connection member coupled to the first sub-module and the second sub-module, respectively; and a cooling plate coupled to the lower cover and forming a flow path through which a refrigerant can flow, wherein at least a portion of the flow path is disposed to oppose the connection member with the lower cover interposed therebetween.

Abstract: A method and an apparatus for removing a motion artifact of a radar are provided. The method includes: obtaining a radar signal for a target to be measured by the radar; measuring posture of the radar; estimating a motion artifact caused by movement of the radar based on a vertical angle, a horizontal angle based on the posture of the radar, and displacement; and correcting the radar signal according to the motion artifact. The posture of the radar includes the vertical angle at which the radar signal is radiated in a vertical direction about a central axis, the horizontal angle at which the radar signal is radiated in a horizontal direction about the central axis, and the displacement of the radar according to the movement of the radar.

Abstract: Provided is a radar device. The radar device includes a raising frequency converter configured to raise frequencies of split channel signals from a baseband to a different passband on the basis of a channel frequency, a transmission antenna configured to transmit the split channel signals received from the raising frequency converter to a target object, a reception antenna configured to receive split channel reflection signals received from the target object, a lowering frequency converter configured to lower the frequencies of the split channel reflection signals from a different passband to a baseband on the basis of the channel frequency, a transmission/reception driving unit configured to data-frame the split channel reflection signals received from the lowering frequency converter, and a device control unit configured to generate an integrated band response signal by using the data-framed split channel reflection signals.

Abstract: Disclosed is a self-calibration method and apparatus for an array antenna system. According to an embodiment of the present disclosure, a correction method of an array antenna system includes: deriving, at a first time, a correction factor Ri,j for a path connecting an i-th (i is an integer equal to or greater than one and equal to or less than m) transmission antenna and a j-th (j is an integer equal to or greater than one and equal to or less than n) reception antenna; deriving, at a second time, a calibration factor {circumflex over (Q)}i,j for the path connecting the i-th transmission antenna and the j-th reception antenna; and performing, based on the {circumflex over (Q)}i,j, calibration on the path connecting the i-th transmission antenna and the j-th reception antenna.

Abstract: A method and an apparatus for measuring a displacement of an object according to steps of: dividing a signal into an I signal and a Q signal according to a phase of the signal, wherein the signal is reflected by the object after a transmission signal having a plurality of frequencies is emitted toward the object by the radar measurement system; estimating a direct current (DC) component from an N-tuple information acquired from the I signal and the Q signal; removing the estimated DC component to correct the I signal and the Q signal; and measuring the displacement of the object based on the corrected I signal and Q signal are provided.

Abstract: A method and an apparatus for removing a motion artifact of a radar are provided. The method includes: obtaining a radar signal for a target to be measured by the radar; measuring posture of the radar; estimating a motion artifact caused by movement of the radar based on a vertical angle, a horizontal angle based on the posture of the radar, and displacement; and correcting the radar signal according to the motion artifact. The posture of the radar includes the vertical angle at which the radar signal is radiated in a vertical direction about a central axis, the horizontal angle at which the radar signal is radiated in a horizontal direction about the central axis, and the displacement of the radar according to the movement of the radar.

Abstract: Provided is a radar device. The radar device includes a raising frequency converter configured to raise frequencies of split channel signals from a baseband to a different passband on the basis of a channel frequency, a transmission antenna configured to transmit the split channel signals received from the raising frequency converter to a target object, a reception antenna configured to receive split channel reflection signals received from the target object, a lowering frequency converter configured to lower the frequencies of the split channel reflection signals from a different passband to a baseband on the basis of the channel frequency, a transmission/reception driving unit configured to data-frame the split channel reflection signals received from the lowering frequency converter, and a device control unit configured to generate an integrated band response signal by using the data-framed split channel reflection signals.

Abstract: The present disclosure herein relates to a biosignal detecting device and a biosignal detecting system including the same. According to an embodiment of the inventive concept, the biosignal detecting device is built in a vehicle seat. The biosignal detecting device includes an antenna block. The antenna block transmits a transmission signal to a person seated on the vehicle seat and receives a return signal corresponding to the transmission signal. The antenna block and one surface contacting the seated person are spaced apart from each other so that a distance therebetween is two times or more greater than a wavelength of the transmission signal. According to an embodiment of the inventive concept, through an optimized arrangement of the biosignal detecting device, the biosignal of the seated person may be exactly and effectively detected.

Abstract: Provided is a radar device. The radar device includes a raising frequency converter configured to raise frequencies of split channel signals from a baseband to a different passband on the basis of a channel frequency, a transmission antenna configured to transmit the split channel signals received from the raising frequency converter to a target object, a reception antenna configured to receive split channel reflection signals received from the target object, a lowering frequency converter configured to lower the frequencies of the split channel reflection signals from a different passband to a baseband on the basis of the channel frequency, a transmission/reception driving unit configured to data-frame the split channel reflection signals received from the lowering frequency converter, and a device control unit configured to generate an integrated band response signal by using the data-framed split channel reflection signals.

Abstract: A method and an apparatus for measuring a displacement of an object according to steps of: dividing a signal into an I signal and a Q signal according to a phase of the signal, wherein the signal is reflected by the object after a transmission signal having a plurality of frequencies is emitted toward the object by the radar measurement system; estimating a direct current (DC) component from an N-tuple information acquired from the I signal and the Q signal; removing the estimated DC component to correct the I signal and the Q signal; and measuring the displacement of the object based on the corrected I signal and Q signal are provided.

Abstract: The present disclosure herein relates to a biosignal detecting device and a biosignal detecting system including the same. According to an embodiment of the inventive concept, the biosignal detecting device is built in a vehicle seat. The biosignal detecting device includes an antenna block. The antenna block transmits a transmission signal to a person seated on the vehicle seat and receives a return signal corresponding to the transmission signal. The antenna block and one surface contacting the seated person are spaced apart from each other so that a distance therebetween is two times or more greater than a wavelength of the transmission signal. According to an embodiment of the inventive concept, through an optimized arrangement of the biosignal detecting device, the biosignal of the seated person may be exactly and effectively detected.

Abstract: Disclosed is a self-calibration method and apparatus for an array antenna system. According to an embodiment of the present disclosure, a correction method of an array antenna system includes: deriving, at a first time, a correction factor Ri,j for a path connecting an i-th (i is an integer equal to or greater than one and equal to or less than m) transmission antenna and a j-th (j is an integer equal to or greater than one and equal to or less than n) reception antenna; deriving, at a second time, a calibration factor {circumflex over (Q)}i,j for the path connecting the i-th transmission antenna and the j-th reception antenna; and performing, based on the {circumflex over (Q)}i,j, calibration on the path connecting the i-th transmission antenna and the j-th reception antenna.

Abstract: Provided is a radar device. The radar device includes a raising frequency converter configured to raise frequencies of split channel signals from a baseband to a different passband on the basis of a channel frequency, a transmission antenna configured to transmit the split channel signals received from the raising frequency converter to a target object, a reception antenna configured to receive split channel reflection signals received from the target object, a lowering frequency converter configured to lower the frequencies of the split channel reflection signals from a different passband to a baseband on the basis of the channel frequency, a transmission/reception driving unit configured to data-frame the split channel reflection signals received from the lowering frequency converter, and a device control unit configured to generate an integrated band response signal by using the data-framed split channel reflection signals.

Abstract: Disclosed is an apparatus for processing a radar signal, including: a transmitting unit which irradiates a plurality of baseband signals as a plurality of division band penetration signals to a target object based on a channel frequency; a receiving unit which receives a plurality of reflection signals reflected from the target object to integrate the received reflection signals as an integration band response signal; and a control unit which sets the channel frequency so that at least some bands of adjacent division band penetration signals among the plurality of division band penetration signals are overlapped with each other.

Abstract: Provided is an apparatus and method for obtaining a radar signal, the apparatus including a radar transmitter to radiate a plurality of split band penetration signals toward a target object, and a radar receiver to receive a plurality of signals reflected from the target object, and to obtain a wideband response signal using the plurality of reflected signals.

Abstract: Provided is an apparatus and method for obtaining a radar signal, the apparatus including a radar transmitter to radiate a plurality of split band penetration signals toward a target object, and a radar receiver to receive a plurality of signals reflected from the target object, and to obtain a wideband response signal using the plurality of reflected signals.

Abstract: Disclosed is an apparatus for processing a radar signal, including: a transmitting unit which irradiates a plurality of baseband signals as a plurality of division band penetration signals to a target object based on a channel frequency; a receiving unit which receives a plurality of reflection signals reflected from the target object to integrate the received reflection signals as an integration band response signal; and a control unit which sets the channel frequency so that at least some bands of adjacent division band penetration signals among the plurality of division band penetration signals are overlapped with each other.

Abstract: An apparatus and method for controlling a BSS area are disclosed. The apparatus includes a generation unit, a coordinate extraction unit, a calculation unit, a path loss calculation unit, a characteristic classification unit, a transmitted signal strength calculation unit, and a control unit. The generation unit receives SSIDs, and generates a collected device list. The coordinate extraction unit extracts the coordinates of an SSID corresponding to a specific location beacon device. The calculation unit calculates a straight-line distance between the specific location beacon device and another location beacon device. The path loss calculation unit calculates a measured path loss value. The characteristic classification unit classifies the characteristic of a link. The transmitted signal strength calculation unit calculates transmitted signal strength. The control unit performs control so that a location beacon device other than the specific location beacon device is prevented from operating in a BSS area.

Abstract: Disclosed herein is a method of providing vehicle wireless communication. In the method, a vehicle receives hand-over-related link information, which includes slot request information about slots requested by a vehicle to a roadside wireless communication device for hand-over of the vehicle, from a central control server. A hand-over preparation message, which includes the hand-over-related link information, is send to a vehicle wireless communication device connected to the vehicle. It is determined that the vehicle completed preparation for performance of the hand-over when a response message to the hand-over preparation message is received from the vehicle wireless communication device. Slots are allocated in consideration of the hand-over-related link information. Beacon frames, which include slot allocation information about the allocated slots, are transmitted to the vehicle wireless communication device.

Abstract: Disclosed herein are a multicasting system and method for a vehicular communication network. The multicasting system includes a plurality of roadside communication devices for communicating with a plurality of vehicular communication devices. Each of the roadside communication devices includes a communication unit for communicating with the plurality of vehicular communication devices and at least one neighboring roadside communication device, a beacon analysis unit for analyzing beacon frames when a slot allocation request is received from one of the vehicular communication devices, a determination unit for searching for a period in which a slot has not been allocated and determining whether a period for allocation of a slot to the vehicular communication device is present, and a slot allocation unit for allocating a slot period for multicasting of the vehicular communication device based on results of the determination of the determination unit.