Abstract:
본 발명은 다중 차량을 구별할 수 있는 차량용 UWB 레이더 신호처리 방법 및 장치를 개시하고 있다. 본 발명의 일 실시 예에 따른 다중 차량을 구별할 수 있는 차량용 UWB 레이더 신호처리 방법은, Tpri 간격으로 반복하여 송신되는 신호의 하나 이상의 반사 신호들을 PRI 별로 수신하여 제 1 메모리 영역에 저장하는 (a) 단계, 상기 제 1 메모리에 저장된 상기 반사 신호들을 소정의 속도 영역으로 나누어 제 2 메모리 영역에 저장하는 (b) 단계, 및 상기 제 2 메모리 영역에 저장된 소정 속도 영역의 반사 신호에 대하여 속도 및 거리 정보를 추출하는 (c) 단계를 포함한다. UWB, 차량 인식, 레이다, 속도
Abstract:
PURPOSE: A pulse radar receiving device and a method for detecting pulse radar are provided to efficiently use a memory size which is necessary by reducing counting amount which is necessary for extracting the distance and speed of a detection object. CONSTITUTION: A pulse radar receiving device(100) comprises a switch(105), a memory(110), an FFT processing unit(120), and a distance velocity extracting unit(130). The switch transfers one distance gate about each sample. The memory assigns pulse within a pulse repetition interval to the distance gate in a column direction. The FFT processing unit frequency-changes pulse data which is saved in the memory to the column direction. The distance velocity extracting unit measures phase change which is changed by a target object at pulse repetition interval and estimates the speed of the target object.
Abstract:
PURPOSE: A movement target detection method and apparatus are provided to accurately detect a movement target without demanding many signal processing amounts. CONSTITUTION: A distributed matrix storage unit stores a bit signal in a distributed matrix. A horizontal axis of the distributed matrix is frequency and a longitudinal axis of the distributed matrix is a SRI(Sweep Repetition Interval) index. A movement target detection unit(130) eliminates a clutter component based on the distributed matrix and detects from a bit signal which is saved in the distributed matrix to a bit signal corresponding to a movement target component. The clutter component comprises a frequency component corresponding to a pause target in which frequency position change is less than a specified level.
Abstract:
PURPOSE: An obstacle detecting method from an accident recording apparatus, a recording medium thereof, and an analysis result display device are provided to enable a user to easily access an image section by the accurate reconstruction of ambient vehicles in accident. CONSTITUTION: An obstacle detecting method from an accident recording apparatus(500) comprises the following steps. An initial searching area of an obstacle is set up(S510). The feature information of the vehicle is extracted and is matched with the template. The feature information of the vehicle is extracted(S540). The feature information is matched with the template, and a vehicle is detected. The vehicle is finally detected based on the feature information. The feature information includes one or more among an outline, a frequency/phase component, a color, and an outline of the number plate.
Abstract:
PURPOSE: A method and an apparatus for recording image data to dynamically correspond to external illuminations are provided to enable accurate accident reconstruction and accident analysis by providing image data of an accident area . CONSTITUTION: An apparatus for recording image data to dynamically correspond to external illuminations comprises an image sensor(120), an illuminance sensor(140), and an illuminance-actuated control unit(110). The image sensor controls transfer width by sensing external image information. The illuminance sensor senses external illuminance information. The illuminance-actuated control unit sets up an illuminance mode using image information and illuminance information. The transfer width determining unit determines the transfer width of the image sensor.
Abstract:
본 발명은, 장애물의 실제 위치를 추정하고 경로를 예측한 후 후보군들을 검출하고 검출된 후보군에 대하여 상관도를 측정함으로써, 차량과 같은 환경에서 강건하게 장애 물체를 추적하고 경로를 예측하는 스테레오 비전을 이용하여 장애물을 추적하는 장치 및 방법을 제공한다. 장애물 추적, 스테레오 영상
Abstract:
PURPOSE: A target distance and speed detecting method using a radar that accurately detects a plurality of targets, an apparatus thereof, and a recording medium thereof readable by a computer are provided to detect bit frequencies having correlation by combining available bit frequencies. CONSTITUTION: A signal converter(310) frequency-modulates the transmission signal of the radar for a plurality of targets. A frequency detector(320) detects an up-beat frequency, a down-beat frequency, and a doppler frequency. A correlation frequency candidate detector(330) detects a correlation frequency candidate set.
Abstract:
거리 검출 방법 및 이를 이용한 레이더 장치가 제공된다. 이 방법은 (a) 복수의 주파수 스윕 시퀀스들 - 복수의 부기간(sub-duration)들에 일대일 맵핑되는 주파수 스윕들로 이루어짐 - 중 어느 하나를 할당 받는 단계; (b) 상기 할당된 주파수 스윕 시퀀스에 따라 주파수 변조된 신호를 생성하여 송신하는 단계; (c) 상기 송신된 신호의 반사파를 포함하는 신호를 수신하는 단계; (d) 상기 송신된 신호와 상기 수신된 신호로부터 얻어지는 비트 신호를 상기 복수의 부기간 동안 주파수 분석하여 첨두 주파수를 검출하는 단계; 및 (e) 상기 검출된 첨두 주파수를 기초로, 상기 송신된 신호를 반사시킨 대상 물체와의 거리를 검출하는 단계를 포함한다. 본 발명에 따르면, 다중 사용자에 따른 간섭 신호를 줄일 수 있어 보다 정확한 거리 검출을 수행할 수 있으며, 그 결과, 차량 안전 운행 등에 기여할 수 있다.
Abstract:
PURPOSE: A transmission device of TR(Transmitted-Reference) ultra-wideband radar system and a radar signal transmission method are provided to transmit a TR ultra-wideband radar signal which amplitude of a reference pulse is bigger than amplitude of a pulse for measurement. CONSTITUTION: A pulse generator(120) generates a ultra wideband pulse according to a frame length. A delay(130) delays the ultra-wideband pulse. An adder(140) adds the ultra-wideband pulse and the delayed ultra-wideband pulse. The adder generates a reference pulse and a pulse for measurement. A tunable amplifier(320) amplifies amplitude of the reference pulse differently with amplitude of the pulse for measurement.