KR20200067629A - 레이더 데이터를 처리하는 장치 및 방법 - Google Patents
레이더 데이터를 처리하는 장치 및 방법 Download PDFInfo
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- KR20200067629A KR20200067629A KR1020180154686A KR20180154686A KR20200067629A KR 20200067629 A KR20200067629 A KR 20200067629A KR 1020180154686 A KR1020180154686 A KR 1020180154686A KR 20180154686 A KR20180154686 A KR 20180154686A KR 20200067629 A KR20200067629 A KR 20200067629A
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
도 2는 일 실시예에 따른 레이더 데이터를 처리하는 장치의 구성을 설명하는 블록도이다.
도 3은 일 실시예에 따른 레이더 데이터를 처리하는 장치의 내부 동작을 설명하는 도면이다.
도 4는 일 실시예에 따른 레이더 센서의 구성을 설명하는 블록도이다.
도 5는 일 실시예에 따른 레이더 센서의 스캔에 의해 획득되는 처프 신호들을 설명하는 도면이다.
도 6 및 도 7은 일 실시예에 따라 센싱된 레이더 신호의 위상 변화를 설명하는 도면이다.
도 8은 일 실시예에 따른 레이더 데이터를 처리하는 방법을 설명하는 흐름도이다.
도 9는 일 실시예에 따라 식별된 타겟 지점들을 설명하는 도면이다.
도 10은 일 실시예에 따라 식별된 임의의 타겟 지점에서 반사된 레이더 신호의 위상 변화를 설명하는 도면이다.
도 11은 일 실시예에 따른 레이더 신호의 위상 정보에 대해 언랩핑 연산을 적용하는 동작을 설명하는 도면이다.
도 12는 일 실시예에 따른 위상 정보로부터 노이즈 대표 정보를 산출하는 동작을 설명하는 도면이다.
도 13은 일 실시예에 따른 노이즈 대표 정보의 활용을 설명하는 도면이다.
도 14는 일 실시예에 따른 노이즈 대표 정보로부터 정상 신호를 판별하는 동작을 설명하는 도면이다.
도 15는 일 실시예에 따라 판별된 정상 신호를 이용하여 차량 속도를 결정하는 동작을 설명하는 도면이다.
도 16은 일 실시예에 따라 결정된 주행 관련 정보를 사용자에게 제공하는 동작을 설명하는 도면이다.
210: 레이더 센서
220: 프로세서
Claims (20)
- 레이더 데이터를 처리하는 방법에 있어서,
레이더 센서를 통해 수신된 레이더 신호로부터 상기 레이더 신호의 위상 정보를 산출하는 단계;
상기 산출된 위상 정보로부터 노이즈 대표 정보(noise representative information)를 산출하는 단계; 및
상기 노이즈 대표 정보 및 상기 레이더 신호로부터 산출된 레이더 데이터에 기초하여 주행과 연관된 정보를 결정하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제1항에 있어서,
상기 위상 정보를 산출하는 단계는,
개별 타겟 지점마다 상기 레이더 센서의 스캔을 통해 일련의(a series of) 처프 신호들을 센싱하는 단계; 및
상기 센싱된 일련의 처프 신호들에 대응하는 위상 변화 추이(phase change tendency)를 산출하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제2항에 있어서,
상기 위상 변화 추이를 산출하는 단계는,
상기 센싱된 일련의 처프 신호들의 각각에서 도플러 축에 따른 위상 값들을 결정하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제2항에 있어서,
상기 위상 변화 추이를 산출하는 단계는,
상기 레이더 신호로부터 분석된 각도 정보 및 거리 정보에 기초하여 복수의 타겟 지점들의 각각을 식별하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제1항에 있어서,
상기 위상 정보를 산출하는 단계는,
상기 위상 정보에 대해 언랩핑 연산을 적용하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제1항에 있어서,
상기 노이즈 대표 정보를 산출하는 단계는,
상기 위상 정보에 대해 선형 회귀 분석에 따른 선형 모델을 추정하는 단계; 및
상기 선형 모델에 대한 상기 위상 정보의 적합도(goodness of fit)를 상기 노이즈 대표 정보로서 추정하는 단계;
를 포함하는 레이더 데이터를 처리하는 방법. - 제6항에 있어서,
상기 노이즈 대표 정보를 추정하는 단계는,
일련의 처프 신호들의 각각에 대해, 위상 값 및 상기 선형 모델에 따른 추정 값 간의 오차를 산출하는 단계; 및
상기 산출된 오차와 연관된 합을 상기 노이즈 대표 정보로 결정하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제1항에 있어서,
상기 주행과 연관된 정보를 결정하는 단계는,
상기 레이더 데이터를 처리한 결과 및 상기 노이즈 대표 정보에 기초하여, 주변 객체를 검출하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제1항에 있어서,
상기 주행과 연관된 정보를 결정하는 단계는,
상기 노이즈 대표 정보 및 임계값 간의 비교에 기초하여, 상기 노이즈 대표 정보 중 정상 신호를 나타내는 타겟 지점을 판별하는 단계; 및
상기 판별된 타겟 지점에 대응하는 노이즈 대표 정보 및 레이더 데이터에 기초하여 상기 주행과 연관된 정보를 결정하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제9항에 있어서,
상기 임계값을 상기 노이즈 대표 정보에 대한 분포(distribution)에 기초하여 결정하는 단계
를 더 포함하는 레이더 데이터를 처리하는 방법. - 제10항에 있어서,
상기 분포에 기초하여 결정하는 단계는,
상기 노이즈 대표 정보에 대한 상기 분포에서 제1 피크가 나타나는 값 및 제2 피크가 나타나는 값 사이의 값을 상기 임계값으로 결정하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제9항에 있어서,
상기 주행과 연관된 정보를 결정하는 단계는,
상기 정상 신호를 나타내는 복수의 타겟 지점들의 각각에 대응하는 레이더 데이터로부터 후보 속도(candidate velocity)를 추정하는 단계; 및
상기 복수의 타겟 지점들로부터 추정된 후보 속도들에 기초하여, 차량 속도를 결정하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제12항에 있어서,
상기 차량 속도를 결정하는 단계는,
상기 복수의 타겟 지점들의 각각으로부터 반사되어 수신된 상기 정상 신호로부터 산출된 도플러 속도 및 각도에 기초하여 상기 후보 속도를 추정하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제12항에 있어서,
상기 차량 속도를 결정하는 단계는,
복수의 후보 속도들을 대표하는 값을 상기 차량 속도로 결정하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제1항에 있어서,
상기 주행과 연관된 정보를 사용자에게 제공하는 단계
를 더 포함하는 레이더 데이터를 처리하는 방법. - 제15항에 있어서,
상기 주행과 연관된 정보를 사용자에게 제공하는 단계는,
상기 주행과 연관된 정보로부터 산출된 차량 속도를 시각화하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제1항에 있어서,
상기 주행과 연관된 정보로서 상기 노이즈 대표 정보 및 상기 레이더 데이터에 기초하여 검출된 객체 검출 정보를 지시하는 단계
를 더 포함하는 레이더 데이터를 처리하는 방법. - 제17항에 있어서,
상기 객체 검출 정보를 지시하는 단계는,
상기 객체 검출 정보에 기초하여, 차량의 움직임을 제어하는 단계
를 포함하는 레이더 데이터를 처리하는 방법. - 제1항 내지 제18항 중 어느 한 항의 방법을 수행하기 위한 명령어를 포함하는 하나 이상의 컴퓨터 프로그램을 저장한 컴퓨터 판독 가능 기록 매체.
- 레이더 데이터를 처리하는 장치에 있어서,
레이더 신호를 센싱하는 레이더 센서; 및
상기 레이더 신호의 위상 정보를 산출하고, 상기 산출된 위상 정보로부터 노이즈 대표 정보를 산출하며, 상기 노이즈 대표 정보 및 상기 레이더 신호로부터 산출된 레이더 데이터에 기초하여 주행과 연관된 정보를 결정하는 프로세서
를 포함하는 레이더 데이터를 처리하는 장치.
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US11340332B2 (en) | 2022-05-24 |
US20200174096A1 (en) | 2020-06-04 |
EP3663790B1 (en) | 2025-01-22 |
CN111352110B (zh) | 2024-08-30 |
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