Abstract: Disclosed is a radar antenna including an antenna body including a first plate and a second plate; a slot radiation part and a slot reception part formed in the first plate; a transmission port and a reception port formed in the second plate; and a waveguide formed by assembling the first and second plates. The slot radiation part includes a first slot radiation part configured to radiate a radio wave in a first detection range, and a second slot radiation part configured to radiate radio waves in a second detection range having a larger width and distance than the first detection range.

Abstract: Provided are a method and device for determining a non-line of sight (NLOS) state around a GPS receiver. The method may include collecting, from at least one satellite, satellite information including a direction angle, a signal to noise (SNR), and an altitude, selecting a satellite of which the NLOS state is to be determined based on an altitude value of the collected satellite information, and determining whether the selected satellite is in the NLOS state with respect to a direction to the satellite based on the SNR and direction angle included in the satellite information of the selected satellite. According to the present invention, by reducing a location calculation error that occurs due to a distance measurement error when a location is measured, a more precise result of location measurement can be obtained.

Abstract: The present invention relates to a wavelet transform processor, and more particularly, to a wavelet transform processor using a pipeline with a bit unit, capable of being effectively used in the video processing field, the video compressing field, the video communications field, the computer vision field, and the like, by executing a high speed wavelet transform through a pipeline with a bit unit. The present invention is to provide a wavelet transform processor using a pipeline with a bit unit, which has a low complexity in circuit, high operating speed and a flexibility.