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2018•International Symposium on Antennas and PropagationRequires access

On Doppler Ambiguity Estimation for Millimeter FM-CW Radar by Using MUSIC Algorithm

Takahiro Horiuchi, Hiroyoshi Yamada, Yoshio Yamaguchi, Michiyo Hiramoto

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Abstract

Even though Pulse-Doppler radar estimates velocity by measuring phase shift amount between pulses, the visible Doppler range is limited by Pulse-Repetition-Interval (PRI). In radio wave, Doppler frequency occurs from moving target as well as sound wave and the phase shift information should include slightly in samples of individual pulses. In this study, MUSIC algorithm is applied to measure these minute shift. We show experimental results on Doppler shift amount estimation by using both fast-time and slow-time and show that the shift amount can be measured without depending on PRI.

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What this paper is about

Even though Pulse-Doppler radar estimates velocity by measuring phase shift amount between pulses, the visible Doppler range is limited by Pulse-Repetition-Interval (PRI). In radio wave, Doppler frequency occurs from moving target as well as sound wave and the phase shift information should include slightly in samples of individual pulses. In this study, MUSIC algorithm is applied to measure these minute shift. We show experimental results on Doppler shift amount estimation by using both fast-time and slow-time and show that the shift amount can be measured without depending on PRI.

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Available abstract

Even though Pulse-Doppler radar estimates velocity by measuring phase shift amount between pulses, the visible Doppler range is limited by Pulse-Repetition-Interval (PRI). In radio wave, Doppler frequency occurs from moving target as well as sound wave and the phase shift information should include slightly in samples of individual pulses. In this study, MUSIC algorithm is applied to measure these minute shift. We show experimental results on Doppler shift amount estimation by using both fast-time and slow-time and show that the shift amount can be measured without depending on PRI.

Key concepts: Pulse repetition frequency, Doppler effect, Pulse-Doppler radar, Doppler radar, Radar, Ambiguity function, Acoustics, Phase (matter)

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