CFAR constant false alarm rate Signal preprocessing technique to improve CFAR constant false alarm rate algorithm performance

• Main Authors: SONG WON YOUNG, JANG GWANG SOO, KIM BAEK HYUN, SO CHEOL
• Format: Patent
• Language: English; Korean
• Published: 28.04.2022
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The present invention relates to a signal processing technique to greatly increase the accuracy of CFAR algorithm through a simple pre-processing process without increasing the complexity of the existing CFAR algorithm. It is possible to significantly reduce false detection and non-detection that can occur when applying the CFAR algorithm and increase accuracy by performing a process for smoothing data and a process for replacing data lower than a specific threshold value with the same value as a threshold value through a moving average method. 본 발명는 기존의 CFAR 알고리즘의 복잡도를 높이지 않고, 간단한 전처리 과정을 통해 CFAR 알고리즘의 정확도를 크게 높이는 신호처리 기술에 관련된 것이다. 이동 평균 기법을 통해 데이터 평활화 작업과, 특정 임계값보다 낮은 데이터들을 임계값과 같은 값으로 치환하는 작업을 통해 CFAR 알고리즘 적용 시 발생할 수 있는 오감지 및 미감지를 크게 줄이고 정확도를 높일 수 있다.