UWB Automobile Short Range Radar Receivers Performance In a Log-Normal Clutter Background

Log-Normal Clutter 환경에서 차량용 UWB 단거리 레이더 수신기의 성능분석

  • Received : 2011.05.14
  • Accepted : 2011.09.15
  • Published : 2011.09.25

Abstract

Ultra wideband radars attract considerable attention as a short range automotive radar because of its high range resolution. Radar signal reflected from a target often contains unwanted echoes called as clutter, so the detection of target is difficult due to clutter echoes. Therefore, it is important to investigate the radar detector for better detecting from the reflected signals. In this paper, the optimal detector is obtained for various mean and variance value in log-normal clutter environment. The types of non-coherent detectors used are square law detector, linear detector, and logarithmic detector. The performances of detectors are compared in log normal clutter environment and the suitable detector is determined for automotive short range radar application.

초광대역 레이더는 높은 분해 능력으로 인해 단거리 차량용 레이더로 주목받고 있다. 차량으로부터 반사된 레이더 신호는 "clutter"라는 원하지 않는 반사 신호를 갖게 되어, 목표물을 검출하는데 어려움을 갖게 된다. 그러므로 목표물에서 반사된 신호로부터 보다 확실하게 검출하기 위하여 레이더 검출기를 개발할 필요가 있다. 본 논문에서는 log-normal clutter 환경에서 다양한 평균과 분산에서 최적인 검출기를 구하였다. 비동기 방식의 검출기로 자승 검출기와 선형 검출기, 로그 검출기 등을 분석하였다. 본 논문에서는 컴퓨터 시뮬레이션을 통해 검출기의 성능을 분석하여, 차량용 레이더로 최적인 검출기를 구하였다.

Keywords

References

  1. Karl M. Strohm,et al., "Development of Future Short Range Radar Technology," Radar Conference, 2005.
  2. D.K. Barton, "Radar Clutter on radar displays," Wireless Eng., vol.33,pp.83-96, 1956.
  3. M.Sekine, "Radar signal processing techniques," The Institute of Electronics, Information and Communication Engineering, 1991.
  4. Isamu Matsunami, Youichiro Nakahata, Katsushi Ono, Yuusei Noguchi and Akihiro Kajiwara, "Empirical Study on Ultra-Wideband"
  5. John G. Proakis, Digital Communications, McGraw-Hill ,2001.
  6. James D. Taylor,ed., Introduction to UWB Radars systems, Boca Raton,FL,1995.
  7. James D.Taylor,ed, UWB Radars Technology. Main Features UWB Radars and differences from common Narrowband Radars, CRC 2001.
  8. I.S. Gradshteyn and I. M. Ryzhik, Table of Integrals, Series, and Products, Academic Press, 1980.
  9. Purushothaman Surendran, Seok-Jun Ko, Sang-Dong Kim, and Jong-Hun Lee, "A Novel Detection Algorithm for UWB short range Radars in Automobile Application," IEEE Vehicular Technology Conference, 2010-Spring, May.
  10. G.Minkler/J.Minkler, CFAR: The principles of Automatic Radar detection in clutter