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Interference Mitigation by High-Resolution Frequency Estimation Method for Automotive Radar Systems
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 Title & Authors
Interference Mitigation by High-Resolution Frequency Estimation Method for Automotive Radar Systems
Lee, Han-Byul; Choi, Jung-Hwan; Lee, Jong-Ho; Kim, Yong-Hwa; Kim, YoungJoon; Kim, Seong-Cheol;
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With the increased demand for automotive radar systems, mutual interference between vehicles has become a crucial issue that must be resolved to ensure better automotive safety. Mutual interference between frequency modulated continuous waveform (FMCW) radar system appears in the form of increased noise levels in the frequency domain and results in a failure to separate the target object from interferers. The traditional fast fourier transform (FFT) algorithm, which is used to estimate the beat frequency, is vulnerable in interference-limited automotive radar environments. In order to overcome this drawback, we propose a high-resolution frequency estimation technique for use in interference environments. To verify the performance of the proposed algorithms, a 77GHz FMCW radar system is considered. The proposed method employs a high-resolution algorithm, specially the multiple signal classification and estimation of signal parameters via rotational invariance techniques, which are able to estimate beat frequency accurately.
Automotive radar;Frequency modulated continuous waveform (FMCW);Mutual interference;High-resolution;
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영상레이더 잔상 제거를 위한 펄스 반복 주파수의 범위 설계,김경록;허민욱;김두환;유상범;이상규;이현철;김재현;

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